A car heater helps to maintain the temperature in the cabin that is optimal not only for passengers, but also for car components. If the operation of the device is accompanied by uncharacteristic sounds - noise, grinding, as well as an uneven supply of warm air, we have to talk about a possible breakdown. All this does not give the car owner any pleasure. The situation worsens if the motor does not make any noise at all. In this case, it will be necessary to dismantle the fan of the Renault Megan stove 2 (3), which can be done without resorting to the services of a car service.

What is a stove fan

A car heater performs a rather simple, but important function - interior heating. In addition, the device prevents the glass from fogging up. In accordance with accepted standards, at an overboard temperature of -25 ˚С, the cabin must be at least +16 ˚С. Such indicators are necessary for the comfortable operation of the car. Structurally, the heater is not a complex unit.

Heat is supplied to the passenger compartment from a running power unit. The heated antifreeze circulating through the engine cooling system also enters the heating system. There it enters the stove radiator, which functions as a conventional apartment battery. The fan drives outboard air through the radiator honeycomb, which heats up in this way. Then it enters the salon through the air ducts. On most vehicles, the antifreeze that passes through the heater radiator immediately returns to the engine, and this circulation ensures a constantly high radiator temperature.

The heater fan supplies and distributes hot air throughout the vehicle interior

As a result, a high constant temperature in the system is provided and maintained. In the absence of a fan, there would be no hot air supply to the passenger compartment. Most car stoves work according to this principle.

One of the main elements ensuring the supply and distribution of heat throughout the cabin is the heater fan, which is an electric motor with an impeller on its axis. It is intended for use in a machine heater system for a hot air blower.

Where is the stove fan of the Renault Megan car?

On "Megan" 2 (3), to repair or replace the stove fan, it will be necessary to dismantle the element. With insufficient experience, it is not so easy to find a heater motor. To get close to the electric motor, you need to lower yourself under the torpedo to the pedal assembly. There is a flap to the right of the accelerator pedal: you need to open it. Behind it is the electric motor.

The stove fan is located under the front panel in the upper part

Why the fan of the Renault Megana stove does not work 2 (3)

Despite the fact that foreign-made cars are equipped with modern equipment, breakdowns cannot be completely avoided. So, in some Renault cars 2 (3), a rather common problem is the failure of the stove fan. To understand what the problem is with, you should first consider how it can manifest itself.

Breakdown symptoms

The fact that the fan is malfunctioning is indicated by the following symptoms:

• fan operation at low speeds;
• gradual failure of speeds;
• there is a smell of electrical wiring in the car;
• the stove starts up with difficulty (after mechanical impact on the lower part of the torpedo on the right near the gas pedal);
• complete stop of the electric motor.

In the latter case, repair of the heater is inevitable. However, in order to be sure that the problem lies precisely in the stove fan, you need to know a little more about diagnosing the node in question.

Breakdown diagnostics

To determine the malfunction, a simple technique should be followed.

1. If, when turning the heater control, the motor is inaudible, then the first thing to check is the fuse. This element is located in the fuse box on the left side near the torpedo and is designed for a current of 30 A. In the event of a fuse-link burnout, you need to find out the reason.

   In the fuse box, element C with a rating of 30 A is responsible for the operation of the heating fan circuit

2. If the performance of the electric motor is disrupted at some speed, you will need a multimeter with which it will be possible to determine which resistor has burned out. After that, you can replace the element or completely change the resistance unit. If the resistors are in good condition, then most likely the culprit is the fan control switch, which needs to be replaced.

   If the fan does not work at one of the speeds, then the reason may be the failure of the corresponding resistor.

3. When it was determined that the fuse is intact, but the motor does not rotate, it is the fan that needs to be checked. To do this, the node must be connected directly to the battery. You can get to the motor only after lifting the glove compartment above the front panel. Then the power connector is disconnected, a plus from the battery is fed to the black-blue wire, the minus is connected to another contact. With this method of connection, a working fan will operate at maximum speed. If there are no signs of operation, the engine will have to be replaced.

   When connecting the electric motor of the heater directly to the battery and its operation at maximum speed, one can judge the health of the unit

In addition to malfunctions of the motor itself, other problems are possible with the interior heater, in which the efficiency of the system is reduced. There may be several reasons for this, for example, a low level of antifreeze in the cooling system, breakage of dampers, which leads to a disruption in the normal flow of air.

Video: replacing the Renault Megan heater fan resistor 2 (3)

Repair of the fan of the Renault Megan stove

If there are problems with the heater fan, its operation is accompanied by incomprehensible sounds, then the part will need to be dismantled, and then cleaned or replaced. Since on Renault Megan 2 (3) the node is very inconvenient, to get to it, you must follow the step-by-step instructions. Only in this case you will not have to dismantle unnecessary elements, and you will also be able to avoid unforeseen situations.

How to remove the fan of the Renault Megan stove 2 (3)

Since the electric motor of the heater is located in a dark place, you will need a flashlight for operation. We carry out repairs in the following sequence:

1. Carefully dismantle the cover. The force should not be excessive to avoid breakage of the cover. The main latch is located in the center of the surface, it just needs to be pulled back.

   The heater fan is located in the upper part of the front panel inside the structure: to get to the unit, you need to open the protective cover

2. Remove the brake light button. To do this, gently turn it to the left and take it out.

   One of the stages of dismantling the electric motor of the stove is to remove the brake light button

3. The next step is to remove the connector from the accelerator pedal. To do this, we apply some effort from the flat side using a screwdriver. Then we remove the brake pedal, for which we disconnect the lock washer, lower the retainer, and remove the axle itself.

   Remove the connector from the gas pedal, and then dismantle the brake pedal

4. We find four nuts that hold the pedal assembly, unscrew them with a key on "13" and remove the mechanism itself.

   To remove the pedal assembly, you must unscrew the four nuts to "13"

5. If you want to see the heater motor, you need to look deeply: the node is located at the top. To get to it, you will need to remove another connector with latches at the ends.

   The fan can be released by pressing the tab of the retainer, rotating the device counterclockwise.

6. Special care is needed at this stage. We dismantle the connector with two thick wires by prying the latch from the bottom. Movements should be directed from the center of the element. To remove the connector, you need to remove it to the left relative to the axis.

   To remove the connector with two thick wires, you need to pry the latch and remove the part to the left

7. The brake rod will prevent dismantling of the motor. To remove the electric motor, it is necessary to pull the assembly as carefully as possible between the heating hoses and the brake rod. This can be done, but only at a certain position of the fan.

   To remove the fan, you need to carefully pull the assembly between the brake rod and the hoses of the heating system

When installing the electric motor in place, the steps are reversed to dismantling. You should not rush to buy a new part. Quite often, the unit can be disassembled, find out the cause of the problem and eliminate it (clean it, install new brushes). If a fan is being replaced, a control unit must also be purchased for it. This is due to the fact that quite often the terminal resistor fails. Due to the high cost of control units, it is recommended that you first find out that it really needs to be replaced, and only then purchase the necessary parts.

Video: how to replace the heater motor with Renault Megan 2 (3)

Replacing or repairing a heater fan on a Renault Megan car 2 (3) requires not only accuracy in work, but also some skill, which is associated with the inconvenient location of the unit. In addition, excessive force should be avoided when dismantling the plastic elements in order to prevent them from breaking. Motor malfunctions are not always associated with the part itself, so you should not rush to buy a new device: first diagnose the breakdown.

Renault Megan of the second generation turned out to be very modern at the time of release and a safe car. The power structure of the body is quite well worked out by specialists from Renault, which is confirmed by the excellent result in the crash test from Euroncap.

In terms of corrosion resistance, there are also no problems. Of course, over time, dots or small swelling of paint may appear in some places, but finding a rotten Megan is almost unrealistic. An exception can be made only by cars that have been in serious accidents and poorly restored. The only significant problem with the body of the first issues was associated with sound insulation, which turned dull in severe frost and went in waves, taking the roof with it.

Also, after the purchase, it is worth treating the place with the body number, because there is a significant risk of corrosion and subsequent difficulties in registration actions.

Megan was delivered to Russia with 3 motors. This is 1.4 98 hp. (K4J), 1.6 110 hp (K4M) and 2.0 135 hp. (F4R). The first and the last are not so common on Meganes, so we will dwell on the 1.6 running engine itself. It has been produced from 1999 to the present day and is installed on many Renault models.

The main and widespread problem of this motor is the phase shifter.

Moreover, this problem does not apply to the 1.4 motor at all, due to the absence of a phase regulator there. And on two-liter, this problem can only come out with significant problems. While on 1.6, the malfunction manifests itself even at low mileage. Symptoms include a short-term crackle immediately after starting the engine, unstable engine operation, loss in dynamics, as well as an increase in fuel consumption. The solution to the problem is to replace the gear, since 2008 an upgraded version has become available, but the problem remained and successfully migrated to the 3rd generation Megan.

Once every 60 thousand, the crankshaft pulley, from which the belt goes to the generator drive, will require replacement, because with wear of the pulley, axial play appears and there is a risk of jamming the mechanism. Together with the pulley, it is recommended to replace the crankshaft gears with a modernized installation with a key.

The rest of the engine is quite reliable and ready for high mileage.

There are no complaints about the mechanical transmission, with the exception of the small resource of the clutch unit. But there are enough questions on the machine, since this is the notoriously known to many - the French machine DP0 AL4.

DP0 AL4. Read about changing the oil in this automatic transmission

The main problems that may arise are the malfunction of the valve body solenoids and the failure of the valve body itself. This is influenced by the level of contamination of the oil, which affects the temperature and, accordingly, the greater load on the valve body. This is aggravated by the fact that the car does not have a separate automatic transmission cooling radiator; for this, a heat exchanger is used, which eventually clogs up and does not provide proper cooling of the automatic transmission.

As a preventive measure for malfunctions, it is possible to recommend not to use the automatic transmission in extreme modes, not to slip, to exclude abrupt starts, especially from two pedals. Monitor the quality of the transmission oil and change if necessary. When replacing, flush the heat exchanger, or even better, install a full-fledged automatic transmission cooling radiator. In general, the box is sufficient brake, and if there is no urgent need for an automatic transmission, it is better to refrain from purchasing Megan with automatic transmission.

The main electrical weaknesses are the ignition coils, the resource of which is 50,000-60,000 km. There are problems with the frayed steering column cable on the airbag. The fuse box is poorly located, which causes problems with access to it and at the same time increases the risk of moisture getting there.

It is also worth noting the rapidly failing bearing of the air conditioner compressor on machines manufactured before 2007, which fell under the revocable company.

On runs after 80,000, problems with the starter may occur.

On the chassis, it is worth noting the weak engine mountings, as well as the thrust bearings, which can crunch even at low mileage.

The steering rack runs more than 100,000, after which knocks may appear due to wear of the plastic sleeve. Otherwise, there are no critical problems with the chassis. Moreover, it should be noted that it is perfectly adapted to our roads.

The interior has some complaints about the plastic, it is quite oak. Over time, crickets appear in the panel. Outwardly, the salon looks outdated today.

Of the troubles, one can single out the ingress of water into the cabin from clogged drain pipes, so if one day you find a puddle at the passenger's feet - do not be alarmed, but start cleaning the drainage.

On runs over 100,000, there may be problems with the power windows, mainly the front ones.

In general, if you weigh all the nuances, the car turned out to be good, but not devoid of certain drawbacks, which together can make you think whether it is worth taking this model or at least be prepared for possible problems.

Best regards, Alexander Talin.

26.01.2017

Renault Megane 2 (Renault Megane) is the most popular car of the French brand, which is in constant demand to this day, even though the third generation of the model has long appeared on the market. The secret of such popularity is that over the years of operation, Megan 2 has established itself as a reliable and unpretentious car, thanks to this, it is excellently sold in a used condition. As you know, there are no ideal cars, therefore, today we will try to find out what disadvantages Renault Megan 2 with mileage has, and what you need to pay attention to when choosing a car in the secondary market.

A bit of history:

For the first time, Renault Megan 2 was presented in 2002 at the Paris Motor Show. Initially, the car was produced only in a hatchback body with an unusual rear end (the rear window is convex and located almost vertically). A little later (in 2003), other modifications were presented to the public - with edan, station wagon and coupe. The car is built on a platform of the class " WITH", Which was developed jointly with the Nissan company, therefore, we can only talk about continuity with its predecessor (Renault Megane of the first generation) conditionally. When designing the rear part of the body, modifications were used that were tested on the Renault Talisman concept car and introduced into production on the Renault Avanttime model.

Sedan cars were assembled at a plant in Turkey, the rest of the modifications were assembled in France. In some countries, Renault Megan 2 station wagon was sold under the name "Megan Grand Tour". In 2006, the car was restyled. Changes affected: the front bumper, front and rear optics, and the instrument panel has also changed. From the same year, only one model of a 1.6-liter gasoline engine was installed on the sedan. 2008 debut , this version of the car is produced to this day .

Weaknesses Renault Megan 2 with mileage.

The body of this model is well protected from corrosion, as evidenced by the fact that most cars over 10 years old do not even have a hint of rust (applies only to those cars that have not been recovered after an accident). Also, there are no special complaints about the quality of the paintwork. The only place that requires attention is the sills and rear wheel arch liners, over time, in these places the paint will be sandblasted to metal (the problem is solved by pasting problematic protective film). Also, you should pay attention to the drainage system in the area of ​​the wipers, since when it gets dirty, water gets into the interior and onto the wiper mechanism, which leads to their oxidation and seizure. Often, there are problems with the electrics, namely, the trunk from the button stops opening (the mass disappears) and the contacts of the rear lights burn out.

Engines

In the secondary market, you can find Renault Megan 2 with the following power units: petrol - 1.4 (98 HP), 1.6 (115 HP) and 2.0 (136 HP). Very rarely, but still, there are Meganes with a 1.5 diesel engine (85 and 105 hp), as a rule, they are imported to us from Europe with high mileage (more than 250,000 km). Therefore, the choice of such machines must be approached with caution. This type of engine is equipped with a fuel system that is sensitive to the quality of diesel fuel, which in our reality brings a lot of trouble to its owners (injectors, injection pumps, EGR valve quickly fail). The only plus of these engines is their low fuel consumption (5.5-7 liters in the city).

Gasoline engines are better adapted to our operating conditions and can run on 92-gasoline without serious consequences. As for the reliability of this type of engine, there are no serious comments on their performance. The only thing that causes trouble is the frequent failure of the ignition coils (they are afraid of dampness). The signal about the need to replace the coils will be: unstable engine operation, jerks during acceleration and deterioration of acceleration dynamics. To check the condition of the coils, you need to unscrew the spark plugs, if they have carbon deposits, most likely they will soon need to replace the coils. If the car is often filled with low-quality fuel, it is necessary to flush the nozzles every 30-40 thousand km. If a gasoline engine began to work as a diesel engine and at the same time significantly increased fuel and oil consumption, most likely, the phase regulator has failed ( s amena will cost 300-400 USD).

Often, the owners of Renault Megan 2 are faced with the problem of difficult starting a cold engine. There can be two reasons for this ailment: the first is dirty injectors, the second is the mesh of the fuel pump is clogged (cleaning or replacement is required). Also, the disadvantages include: loss of tightness of the throttle gaskets, failure of their damper on the crankshaft pulley. All engines are equipped with a timing belt drive, it must be changed at least once every 60,000 km, at the same time it is recommended to change the pump. It is better to entrust the replacement of the timing belt to professionals, since in all motors the pulleys have a keyless fit, and if the fastening bolt is not tightened enough, the pulley can turn, which will lead to the meeting of the valves with the pistons. Approximately every 100,000 thousand km, you have to change the catalyst and engine mounts.

Transmission

Renault Megan 2 was equipped with a five- and six-speed manual and a four-speed automatic transmission. Operating experience has shown that automatic transmission is less reliable than manual transmission. The automatic machine, with proper maintenance, takes care of only 100-150 thousand km, then, a major overhaul of the transmission or replacement is required. To extend the life of an automatic transmission in the cold season, it needs to be warmed up, but in the summer, it is prone to overheating, especially when driving in a traffic jam. In a manual transmission, the clutch disc is considered a weak point, the problem is that it wears out unevenly. A jerk when shifting gears will signal a problem. Also, the release bearing is not famous for its long resource, as a result, the clutch has to be changed quite often, every 60-80 thousand km.

Problematic places undercarriage Renault Megan 2

Renault Megan 2 is equipped with a semi-independent suspension: front - double wishbone (MacPherson), rear - lever-spring with trailing arms, hinged to the car body and interconnected by a beam. In terms of reliability and comfort, the car's suspension has worked well. If you do not take into account the struts and stabilizer bushings (the resource of which is 20-30 thousand km), then the weakest suspension elements are the thrust bearings and steering tips, the service lines of which in rare cases exceed 50,000 km. The rest of the suspension elements have a fairly long service life. For example, shock absorbers, ball joints and wheel bearings often fail after 90,000 km. Silent blocks, levers and CV joints with careful operation live 120-150 thousand km. As for the steering, here, the main problem is the small resource of the plastic bushings of the steering rack (service lines 80-100 thousand km).

Salon

Despite the fact that inexpensive materials were used for the interior decoration of Renault Megan 2, its quality and durability is practically not satisfactory even after 10 years of operation. There are no special complaints about the reliability of electrical equipment. The only thing that spoils the pleasant impression of the cabin a little is the incorrect operation of the head unit, power windows and air conditioning. When contacting the service, it is recommended to replace all sensors and connectors, but, unfortunately, in most cases this solves the problem for a short time.

Outcome:

Despite all the shortcomings, it is rightfully considered one of the most comfortable, reliable and inexpensive cars in the "C" segment. When choosing a car of this model, you need to understand that it is no longer young and, most likely, has a solid mileage, therefore, you need to be prepared for the failure of certain components.

If you are the owner of this car model, please describe the problems that you had to face during the operation of the car. Perhaps it is your feedback that will help the readers of our site when choosing a car.

Best regards, editors AvtoAvenu

Renault-Megan of the second generation is a modern car, but even it sometimes makes owners jittery. So, one day the engine may not start. Some owners are very scared that the engine is out of order. In fact, if Renault-Megan 2 does not start, then the problem lies not in the engine itself, but in additional components and assemblies. Let's take a look at the root causes of startup failure and find out how to troubleshoot these issues.

Main reasons

If the car did not start in the morning, then this may be due to the following reasons. Most often there are problems with the starter or fuses. Also, often problems can lie in the battery or wiring. In the car, the crankshaft position sensor is also involved in the starting process - if it fails, the Renault-Megan 2 will not start. There may be a problem with the engine power system. The fuel pump is faulty or there is no power in its circuit.

Do not discount the banal carelessness. The driver could forget that there is not enough fuel in the tank. It is worth paying attention to the fuel level sensor on the dashboard more often. If the indicator lights up, then there is not enough fuel left in the tank - this volume can be enough for 50 kilometers. When the lamp comes on, you need to refuel the car.

Also, if Renault-Megan 2 does not start, make sure that the Check Engine light is off. If the lamp is off, then the reason is definitely not in the engine. This will help narrow down the possible causes when troubleshooting. Let's take a closer look at each of them to understand how to fix it. This information can greatly help new car enthusiasts and those owners who do not know this car.

Battery

This is the most commonplace of faults. It is easy to diagnose it - the motor does not start, but the starter turns on. Often the battery can be charged, and the starter can even turn on. But the capacity of the battery may not be enough to generate a spark, which should ignite the fuel mixture in the engine cylinders. The battery needs to be charged or you can use a booster. If this is the case, the engine will start.

In addition to the charge level, the terminals on the battery can be oxidized. Oxides can be subtle and almost invisible to the human eye. But they are quite enough to create a very real resistance, which reduces the inrush currents of the battery. The terminals on the battery must be well cleaned of oxides. This applies not only to the contacts on the battery themselves - what is connected to these contacts is also subject to cleaning. Sometimes this operation can solve problems with starting the engine.

Engine electrical system

If the starter turns, and the Renault-Megan 2 does not start, then you should look for the cause in the electrical connections. It is electrical problems that are especially common of this kind.

One or more wires may be damaged. It also happens that some contacts are oxidized. The ECU connector, wiring to injectors, fuel pump wiring, sensors are responsible for starting the engine. It is worth checking the crankshaft position sensor connector. He is directly involved in starting the engine. According to the data from this sensor, the ignition system works. Contacts can be clogged with dirt, oil, and other elements. All wires and connectors should be wiggled. If the reason was the contacts, then the engine must start.

Circuit breakers

When the starter turns, and the Renault-Megan 2 does not start, it is worth checking the fuses. Perhaps one of them, responsible for any systems involved in the startup process, burned out. A defective fuse must be replaced.

Starter does not turn

If there is no reaction to turning the key or pressing the engine start button, then the situation is worse, but still not very scary. But the owners of this car should be aware that in these models the starter is a headache. It is located at the bottom of the engine, at the back. It easily gets water and dirt from the road.

If the starter does not turn, then the first thing to check is the battery and its terminals. Next, check the wires going to the starter. This one is thick from the positive terminal of the battery and thin from the ignition block. If the wires are in order, then check the condition of the "ground" contact of the engine. This contact is established in an unfavorable place and is often clogged. You need to clean it up.

Also, if the starter on Renault-Megan 2 does not start, check the ignition lock. Often the reason lies in it. Contacts in the contact group can burn, oxidize, burn out completely. One thin wire goes from the ignition switch to the starter - when the key is turned, +12 V appears on it. This voltage at the small contact activates the retractor and holding winding of the starter retractor relay. If the contact is broken, then the voltage on the wire will not appear, and the starter will not be able to start the engine.

If Renault-Megan 2 does not start from the button, then, perhaps, the reason is hidden in the wiring from the battery to the starter. The principle of operation of the button is similar - when a short circuit on a thin wire to the starter, a voltage appears that activates the winding of the solenoid relay. If the starter does not turn on, then this does not necessarily indicate its failure. Most often, the reason lies in the banal lack of contact.

Solenoid relay

When the key is turned in the ignition switch or when the button is pressed, the retractor relay is activated. It extends the starter bendix, but also closes the power contacts. A power plus comes from the battery terminal to the solenoid relay. The minus is taken from the engine body. Further, when the solenoid relay is triggered, the positive contacts of the battery are closed with the wire supplying the starter motor.

It is also recommended here to carefully check all the connection points and the wires themselves. It is not uncommon for the starter motor not to start the engine precisely because of this. Thick wires may appear to be in good order only visually. Inside, they consist of a large number of thin veins - during operation, these veins break, break. As a result, the contact inside the wire can be provided with fewer cores. And if we take into account that the starting currents for the starter are high enough, then in such a wire the current strength drops.

You should also check the power plus terminal. The place where the terminal is connected to the wire can be oxidized. Oxides are resistance. Copper bolts are used as contacts on the solenoid relay. They are also subject to active oxidation. If the starter does not work, then it does not hurt to check them.

If the retractor relay is working properly, then after turning the key, a characteristic click will be heard. This suggests that the starter brushes are at least intact. The "minus" solenoid relay takes exactly from the negative brushes of the starter motor.

How to check the retractor?

If after clicking nothing else happens, then you need to check this relay. This can be done by closing the power plus and the small contact. If the relay clicks and the starter motor starts to rotate, then the reason is in the ignition switch. If not, then in contacts and retractor. There are contact plates inside the element, which over time can burn and lose contact.

You can check the starter motor as follows - with a screwdriver, close two bolts on the retractor relay. The electric motor should be spinning. A good starter should not heat up. The same applies to the solenoid relay.

Crankshaft position sensor

If the Renault-Megan 2 car does not start, and the starter turns the engine properly, then the fact is that when the ECU stops receiving data from this sensor, the start is blocked. You cannot unlock the system without information from him. Most often, it is not the sensor itself that fails on this car, but the connector. To eliminate this problem, it is recommended to clean the contacts in the terminal. And for sure everything will work out.

But you need to take into account certain nuances. The connector is very fragile and delicate. If there is no experience with such elements, then it is better to act as carefully as possible. And access to the element is also difficult.

Gasoline pump

A common reason when the Renault-Megan 2 engine does not start is a gas pump. If it fails, then gasoline stops flowing to the fuel rail and injectors. Usually the pump does not break, but the contact in its connector is lost. The problem here, typical for the entire model as a whole, is the fragility of the connector. Access to it is difficult, but the contact needs to be cleared. The rear seat must be removed to access the fuel pump. The pump is electric, submersible. And it is placed directly in the fuel tank. Fortunately, a special hatch is provided for access to it. By unscrewing a couple of screws, you can provide access to the element. After that, we take out the mechanism complete with a float and a glass. And then we check the condition of the contacts and wires that go to it. Here we can visually identify all damage. By the way, if the pump does not hum when the ignition is turned on, it means that no voltage is supplied to it at all.

Renault-Megan 2 often does not start after downtime. Even if the car has been standing for two or three days in the bright sun, the next day it may not start. The starter motor will spin, but the car will not start. This all concerns the fuel pump. Also, the pump may not produce the required pressure, and without a certain pressure in the fuel rail, the engine also does not work (or the car moves in jerks).

Throttle valve

The throttle valve problems in this car are not related to clogging. Often settings on it disappear in some way. In this case, throttle adaptation helps.

Scanning errors

You can find out why Renault-Megan 2 does not start using a diagnostic scanner. The vehicle is equipped with a diagnostic system and has an error memory. Among them, there are definitely those that affect the launch. For example, the reason may actually be a weak pressure in the fuel rail, knocked off timing marks, in the camshaft or crankshaft sensor.

"Megan 2" 1.5 DCI

There can be a lot of the above reasons. But if Renault-Megan 2 1.5 DCI does not start, then it is possible that they tried to start the car “from the pusher”. This can lead to knocked down timing marks. On this engine, the tooth on the gear, from which the camshaft sensor receives an impulse, is located on the injection pump pulley. If the synchronization is out of order, the car will not start.

Diesel engine

If the starter works unevenly, in jerks, the engine does not show signs of life, then the timing belt should be checked. It may be torn. If the starter turns normally, smoke comes out of the pipe, but the engine does not start, then this indicates that at least there is fuel in the cylinders. So, this is definitely not a high-pressure fuel pump. So, you need to check the filter (it can be clogged with dirt), the fuel line, the quality of the fuel and the level of paraffin that is contained in it. These signs can be a signal for the need to repair the injectors.

The situation when the starter turns, but white smoke appears and the diesel Renault-Megan 2 does not start, the mixture does not ignite in the cylinders or only partially ignites. At the same time, the fuel system is in good working order. The glow plugs may be defective. Could have jumped the injection pump belt. And the worst diagnosis is low compression.

Conclusion

If then the first thing to check in this car is the wiring and connectors of the sensors, the fuel pump connector. These are the weak points of this model. Power to the pump is often lost. Also, the connection in the sensor connectors is lost. If Renault-Megan 2 1.6 does not start, then the reason in most cases is precisely in the wiring and only then in everything else. If the wiring is checked, then further diagnostics depends on whether the starter is turning or not.

Despite the fact that Renault Megan is a fairly reliable car, it has some weaknesses and typical sores. There are some problems in the transmission. Manual gearboxes - that “six-steps” in two-liter versions and “restyled” 1.9-liter turbodiesels, that “five-steps” with other petrol and diesel 1.4-1.9 liter engines of all types are reliable in themselves and can rarely fail.

When there is another hundred thousand kilometers on the odometer, check the condition of the gaskets and oil seals without fail, as they have the property of "flowing" to this line. Next, keep the oil level under control, otherwise the differential bearings will suffer. It happens that jerks often begin after some 11-15 tons kilometers at the moment when the clutch discs close. The jerking of the car is especially noticeable when the unit heats up during hot weather or when driving in traffic jams - and it is not completely cured even if you replace the complete “basket” for 250 euros.

A perennial problem - the AL4 automatic transmission

The adaptive automatic transmission DP0 at a price of 3500 euros, called AL4, also pesters the owners of some Citroen and Peugeot models. Although this unit, which debuted in 1999, has been improved throughout its entire conveyor life, but this did not help it - it remained a problem as a knot of French cars. "Automatic" in an unheated state does not tolerate operation and is very sensitive to the oil level, which can be checked in the absence of a dipstick only on the lift. Further on the list, in the risk group, oil seals and a torque converter, a bulkhead will cost 650-1050 euros. However, most often - sometimes already after 60-75 tonnes kilometers, maximum 80 tonnes (due to strong shocks during switching), it is necessary to change the modulation valves or the entire valve body for 210-480 euros.

Renault Megane 2 suspension weaknesses

About Megan's suspension. Almost all the weak points in this node are already known. For example, the support bearings of the front struts for 95-105 euros, before the company strengthened their design in 2007, and their replacement under warranty due to knocking on irregularities often happened without having traveled 15-20 tons. Kilometers. The reason for such an early failure of the support bearings of the front struts is their lack of protection from dirt.

The front silent blocks of the levers could theoretically serve for 125-160 tons km, if they did not fail twice as fast, coupled with levers at 100 euros each with non-removable ball bearings, which also wear out. In principle, it is possible to buy non-original hinges separately, but how strong the lever with a ball, at the same time, bolted, is a big question.

According to the owners of Megan 2 cars, the durability of the bushings and anti-roll bar struts is simply amazing, and they do not give a reason to remember yourself even when the odometer is 115-135 tons. Kilometers! The front shock absorbers, for example, have the same service life, which cost 90 euros each. However, the rear shock absorbers are not as durable - it's not that they are bad timing, no, that's no problem. Just to provide excellent handling - they are tilted at a steep angle. And in this regard, they work with increased loads, and cost 50 euros each. When, due to this feature, they begin to show signs of fatigue, this is expressed in the following way - often they give it out not by leaks, but by knocks before 95-100 t. Km. The rear ones do not differ in their special vitality, but there is at least one plus - they are located in plain sight, so it will not be difficult to control their condition. Silent blocks of the rear beam, which cost 70 euros each, will require attention only after 100-120 tons of kilometers. If they squeak, it means they are torn.

Renault Megane II suspension problems

Now a few words about the steering. When you hear a rattling sound in the steering column, you should not rush to the service immediately, since this is the norm on almost every second car: it happened that the steering shaft in new cars could reach the travel stop. "Rake" at a price of 550-600 euros by itself usually requires total intervention no earlier than 70 tons kilometers with the replacement of a broken bushing. The steering tips are likely to "go" the same amount, but the rods of forty euros will have time to be updated a couple of times until then, and this is just that super rare case when it makes sense to put a more "unoriginal", which is more durable. The electric power steering costs 1,700 euros, is not repairable and must be replaced in case of a malfunction of any complexity.

Typical sores Renault Megan 2002 - 2008 onwards

"Halogen" dipped beam do not last long, but change them "Jesuit", that is, by touch - this is done through the hatches, which are in the area of ​​the front wheel arches.

When your car's windshield starts up, and a lot of dirt appears under the hood, it means that the sound insulation of the engine shield swells and the seal sags. To clean the drain pipes, you will have to lift the shroud under the windshield and dismantle the wiper wiring.

The front fenders are plastic. They are not afraid of light blows, but the bumper latches on them break off quite easily.

According to the owners of Renault Megan 2, in winter, the gas tank flap, also plastic, often freezes, and attempts to open it are likely to result in a breakage of the retainer.

With a low plastic boot bottom, be careful as it breaks easily. On pre-styling cars, that is, before the release of 2006, Renault did not equip the rear brakes with mud guards, therefore this leads to "emergency" wear of the inner pads.

There are no structural problems with hatchback, station wagon and coupe-convertible bodies. But here sedans "lit up" with an exotic problem, which is expressed in severe frosts - it happens that the roof swells! This "epidemic" became an actual super-severe winter of 2006, and all because of the thermal noise insulation tightly glued to the roof panel - it shrank from the cold and pulled the "roof" metal along with it, so the plant did not take into account our temperature differences and provided proper clearance. Since 2007, they began to make mats from other materials, so that traces indicating roof repairs for cars older than 2006 are not at all a sign of their accident in the hands of the previous owner.

When you make a purchase of Megan 2, we advise you to pay attention to post-styling cars, after the release of 2006. The French call them cars of the second phase, since almost all "childhood diseases" were found and cured, so now the reliability of these cars causes much less claims.

Prices for Renault Megan 2 and closest competitors (analogues)

1.4-liter versions of the Megan with a capacity of 97-101 forces of 2008-2010. are estimated in the region of 280-450 thousand rubles. Versions with 1.6-liter engines with 111-115 hp. already at 320-480 thousand rubles, for the same price, for example, the Chevrolet Lacetti or, for example, fit, but the Japanese peers Toyota Corolla or Mazda3 are more expensive. And finally, the most interesting proposal is the two-liter Megan. They will cost only 10-25 thousand rubles more. It is more rational to take the "mechanics", however, you will have to get used to the jerky nature of the clutch.