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Today's my article will tell you how to check the automatic transmission when buying a used car.

One of the most problematic units of the car is an automatic gearbox (automatic transmission). Due to the increased complexity and varying of this mechanism, it often fails.

And the replacement or repair of this most important part of the transmission is one of the most expensive maintenance stations. Because of this, the purchase of a used car with automatic transmission can be very profitable to switch to a discharge of an extremely unprofitable transaction.

Therefore, if you decide to purchase transport with a similar mechanism, use my instructions for self-definition of the ACAP state.

Motor transport boxes are different:

• Mechanical (MCPP);
• Variator (WCPP, SUT);
• Robotic (RCPP);
• Automated (hydromechanical) (automatic transmission).

Attention! By virtue of historical conventions, the automated (hydromechanical) variety of such gearboxes is called automatically called automatic transmission.

ACPP as well as the RCPP frees the driver from the need to constantly switch the speeds and the principle of operation here is what: the driver sets the gear selector (lever) to the desired position and then all transitions between speeds in the selected range occur automatically.

The positions of the selector on modern automatic transmission are several, and they may vary on different stamps / models. But the main modes are usually the following:

• Parking mode (P);
• Rear gear (R);
• Neutral mode (N);
• Move mode forward (D);
• Low gear (L).

The automatic transmission is characterized by a very smooth switching of speeds. It is convenient, but at the same time, it is a very complex and very vulnerable device, correctly repaired which is not every car mechanic.

Moreover, they don't like to repair them at all, since for about the same time and with smaller troubles can work with several ordinary gearboxes, for a large total payment. Therefore, a hundred usually try to add car owners precisely to the replacement of automatic transmission, and not to repair it.

Independent check of automatic transmission

Step One: Seller Selrography Machine

Immediately need to ask the owner of the car. It is possible that after a conversation with him to inspect the car no longer be needed - you look for another option.

You need to ask:

• On the features of the use of the car;
• On the maintenance of automatic transmission;
• On the repair of automatic transmission.

Ask about the features of the use of the car

If the owners were a lot, or the owner used a car as a taxi or for the carriage of various gravities on the hitch (its very minus itself), as well as for hunting, fishing, traveling by nature, etc., then it is better to refuse Even if other nodes of the machine are in good condition.

By the way, if there is no Parkop, then check possible tracks from its installation, as well as traces of the cable on towing eyes - towing for automatic transmission is also very harmful.

Machines with automatic transmission are little adapted for extreme conditions. For example, 15-30 minutes of slipping in the snow or dirt can lead to overheating of the transmission oil and a low-resistant spider gearbox.

Ask for maintenance of automatic transmission

Ask whether the replacement of transmission oil was carried out. If not carried out, and there is a mileage of more than 80 thousand km, then in the near future (at the turn of a run of 100 thousand km or more) problems with automatic transmission will be necessary, even if you immediately change the oil.

If the oil changed, then ask what mileage, what kind of oil it was replaced and who changed it. Whether the filter in the pallet was replaced.

According to the regulations of most automakers, the oil change in the transmission should be carried out at the turn, not exceeding the mileage of 60 thousand km, and optimally at 35-45 thousand oil is obliged to be a special transmission: usually this ATF is a special automatic (Automatic Transmission Fluid). Only certified STRs, which issue a check, order-outfit should be engaged in such a replacement, and at best the guarantee. If the filter changed with the oil, then this is an additional weighty plus.

In some cars equipped with an on-board computer, just do not change the oil - you need to connect to the brain of the machine.

Ask about the repair of automatic transmission

If you get an affirmative answer to the question about repairing automatic transmission, then from such a transport it is better to refuse because there is a lot more chances to get a "cat in a bag", even if the owner, and documents and documents for its repair. It is in the case of the automatic transmission that the automatic transmission is better not to risk: there will be more chances for repairs than on trouble-free ride. But if the gearbox was not renovated, and replaced with a new one in a certified service station, then this, of course, is good, but ask the reason for such a replacement.

We still observe the reaction of the seller for competent questions about the gearbox, it is often that it gives suspicion of some trick or at all.

After the survey, if you intend to continue the examination, go to the next step.

Step Two: Inspection of the box and transmission oil

Visual inspection of an automatic box

For inspection, use only the bright time of the day, it is desirable to do it a day with dry and clear weather.

Ask the owner to warm up the car. In the summer, it is enough for 3-5, and in winter 10-15 minutes. Install the car on the smooth place as possible and move the selector to the parking mode - P (on some brands you need N).

Attention! All tests for automatic transmission are carried out only after warming up the car.

When the machine warms up when the motor is running (with idle minimum revolutions), open the hood and inspect the box visually. It should not be leaks from oil, and it should not be allocated by the level of pollution from the entire other motor compartment. Do not be lazy and inspect the box from the bottom side.

Inspection of transmission oil

Now you can proceed to the inspection of the transmission oil. Here you should know that there are two varieties of automatic transmission:

• Non-servant - the plug does not have an oil probe;
• The serviced - on the traffic jam there is an oil dipstick.

However, both names are conditional and all automatic transfers are serviced (otherwise cannot be). But some sellers, to the question of why they dragged so long with the replacement of the oil, no longer answer: "So the box is so maintained!", Like, what else did you want.

And if a person does not really understand this, then his such answer can fully arrange. There was even a case when the buyer acquired a car with a completely killed automatic transmission that worked only in two modes. The owner of the buyer emotionally "enlightened" that it is all absolutely normal: "After all, you take the machine, Daragoy, yes? How can you be different, think? ".

Transmission oil must be investigated by the following criteria:

• Level;
• Consistency;
• Color;
• Solid and weighted inclusions;
• Smell.

In the case of a non-maintainable box about the quality of the oil, it is possible to judge only by smell of traffic jam, and everything else will have to check for a hundred.

If the automatic transmission is served, then the probe with oil can tell a lot.

The level on the diploma is obliged to remain from HOT to Cool - the deficiency and even excess levels harm automatic transmission.

Normal oil has a thick consistency - it should not run from the probe as water.

The color of the oil should be from red and to dark red. If it is brown, but has transparency and there are no weighted inclusions, then such a color is also allowed - automatic transmission in the normal state, but the urgent replacement of ATF is required. If the color of the oil is dark and opaque or very black, then from buying this machine you need to refuse.

If some extraneous suspension (rags, metal inclusions, etc.) are noticeable in the oil of any color, then this car is also not recommended - most likely the cunning owner changed ATF before selling.

The smell of oil should be characterized by technical. If the smell of Gary goes from him, then from such a car you need to refuse - friction discs are burnt into the automatic transmission (clutch analog). The smell of the same french fish speaks of a long period of use of transmission fluid.

That's all over the inspection and inspection of oil. Not all and difficult, is it not true?

Step Three: Test Drive for automatic transmission

Test check at idle

Now you need to check the automatic transmission to work: at idle and in motion. Before this, be sure to muffle all foreign sources of noise in the car (radio, a loud conversation, etc.).

At idle the gearbox is checked as follows:

• The brake pedal squeezes.
• The automatic transmission selector switches to all modes with an interval of 3-5 seconds - all transmissions should be turned on immediately. The maximum delay time is 1 second. There should be no strong jolts, squeaks, pinks, etc.
• The automatic transmission selector (with a squeezed brake) is driven over all modes again, but in this case, almost without delay between the modes. At the same time, nothing suspicious should not happen.
• When the brake pedal is squeezed, quickly swipe the combination with a selector: Drive - Reverse - Drive. The maximum delay in 1.5 seconds is allowed. Pay attention to the shock, jerks, kicks, outsiders.

Only light and smooth jackets are allowed (most of all is felt in the REVERS and DRIVE position), but in no case should not be strong, short and intermittent. The serviceable automatic transmission is distinguished by the fact that it is impossible to find it on - it works quietly and perfectly.

Check inspection in dynamics

The second part of the inspection is already carried out in motion.

Before the test drive, it is desirable to choose a direct section of the road, where there are no possible obstacles for continuous overclocking up to 100 km / h (traffic lights, DPS posts, etc.).

You will need tests in all major modes related to the movement of the car. This is about, that's what checks:

• Smooth start and overclocking;
• Fast acceleration and braking;
• Free movement with a decrease in gear;
• Check the Overdrive function.

Smooth start and acceleration

In Drive mode (on it, you make the transition from the Parking mode) smoothly touch the car from the scene and also smoothly squeeze the gas pedal until the speed is 50-60 km / h. Until this mark, the serviceable automatic transmission should switch at least twice (from the first to the second, and then on the third). Special attention is paid to the moment of transition from the first speed to the second - there should be no sharp jerks and strong pins, only a light and smooth impetus is allowed.

Continue smooth acceleration in sparing mode to a speed of about 90 km / h. To this mark, the machine will have to go through all the programs. You must carefully observe the presence and character of the impetus when switching, the presence of any sounds, etc. The serviceable automatic works almost silently, with light and smooth jokes when switching speeds.

Watch the tachometer testimony. For example, at 4-speed automatic transmission and speed of 85-95 km / h, the tachometer should show at least 3000 revolutions, and with a 6-speed gearbox, just over 2000 revolutions.

Fast acceleration and braking

For a sharp acceleration, when starting from the spot, switch the selector to the DRIVE position and dramatically press the gas pedal (only without excess fanaticism). Auto with a good automatic transmission without problems will give a good start from the scene and quickly gains momentum (5-6 thousand). This dynamic is useful to verify with the manufacturer declared: for example, 10-12 seconds are written there. overclocking up to 100 km / h - here is about this indicator and must be the result of the test.

If you bring gas, the unit gives turns, and the auto itself does not produce expected speakers, then it speaks about slipping frictions, and this automatic transmission will most likely need to be repaired or changed.

After checking the dynamics of fast acceleration and reducing the speed of up to 40 km / h, sharply press the brake pedal, to check emergency braking - if everything is in order, then the automatic transmission will unwind speed, and the car will stop.

Free movement with reduced gear

This test is needed to verify how the automatic transmission lowers the transmission. Some of these checks are considered excess, but when testing the automaton of unnecessary checks does not happen, so perform all test drives as possible.

Here you need to dispersed the car up to 90-100 km / h and let go of the gas pedal, the launching car into the roll. While the car will follow in the inertia, the gearbox must move smoothly (almost imperceptible) to switch to a transfer to a decrease, with a corresponding decrease in the indicator of the tachometer.

Checking the Overdrive function

If there is an increase in the increase transmission system (Overdrive function is an analogue of the fifth transmission for the manual transmission), it is also subject to verification.

Spoke up to 60-70 km / h and press the Overdrive button (ON), while the automatic transmission will immediately go to a higher transmission. Turn off this mode (OFF) - the transmission should easily drop by one level.

If when Overdrive is enabled, the Check Engine indicator will light up, this may indicate a malfunction of the automatic transmission.

Well, that's all tests for checking automatic transmission in the field. Not so much and difficult and if they are fully fulfilled, then you can be more than 80% confident in the health of the automatic gearbox and at the same time the entire transmission.

The same who wishes to get a more detailed idea of \u200b\u200ban independent check of the automatic transmission I advise you to view this video, where all the details of the tests are illuminated by the experienced car owner with a machine gun:

• When inspecting the car, pay attention to its tires, especially when buying an SUV. If you see that the machine "shod" into any kind of rubber of increased passability, then this may be an extension incentive to a thorough check of the automatic transmission and more to a pre-personal owner survey.
• With a test drive of a speed set, you should understand that if the car has a weak motor installation, then such a test will be naturally failed - the car is physically not able to execute it. Have this in mind.
• You should know that the automatic brain of automatic transmission analyzes the teams from the driver mainly based on the analysis of the behavior of the gas pedal. That is, there is a difference for the machine. How exactly you squeeze the pedal (sharply, smoothly, a bit, "before the polish", etc.) - based on this system determines the transmission in which sequence will transmit.

Conclusion

Well, you now have an idea of \u200b\u200ban independent check of automatic transmission. You learned that used machines with such a gear must be checked especially carefully, not to penetrate the faith for all sorts of assurances of the seller, and focus on the study of transmission oil and carry out all the points of the test drive.

And how do you check this unit you? Tell me about it in the comments. If info is interesting either useful, then I will add this article.

On this I finish the publication and wish you all the most fresh car drive! Place a blog subscription and share your articles in the social buttons.

Until next meeting, friends!

It is paramount to determine what plan will check, independently or specialized to a hundred? It is difficult to find intelligent specialists who can propagate the "box" on a computer and visually, tactile. Therefore, we consider the features of checking the automatic transmission independently.

How to check?

The diagnosis will consist of stages that include both the diagnosis and the study of the "life" of the car as a whole. So:

1. We learn the story of the "life" of the car, as it was exploited. In general, it is necessary to pay attention to the most banal "trifles", whether oil was changed in the automatic transmission, which was flooded as the owners, mileage, who drove, where they were predominantly traveled, etc. Learn more to read the service book. Find out the seller, what kind of repair was carried out, perhaps the car was replaced by the "box", for example, on the automatic transmission automatic transmission or restored handicraft. It would be nice to grow evidence, checks in the service book, checks. Well, if the car was prigaled from the same Europe, they have an illegal one hundred to find very difficult, the likelihood that he was serviced from the "official" and the note in the book was made, high.

We do not advise you to buy cars after a taxi or accident, if even the seller admitted and certified that a good repair and service was held. As a rule, reselligents are engaged in "dealers" or owners who have invested after an accident, taxis, minimum of funds, to simply "mark it".

2. The second that do not forget to do is be sure to check the level, the condition of the oil. Often in the "box" department pour a reddish shade oil. Check the level better on the most smooth coatings.

Toyota oil probe box. Level above the norm. Must be at the HOT level on a warm car.

It is necessary to know that part of the manufacturers allow you to check the level, both for the engine, without the need for warming up. In such cases, on the "probe" instead of two strips, there will be four. But, remember, such a format for checking the oil on the "cold" is not reliable, it is better to do for "hot", and for this, the car is obliged to drive at least 10 km. In general, remember that the level should be between the upper and lower marker in both cases. Sometimes the corresponding marks in words like Cool and Hot, corresponding to the "on which" measurement of oil, cold or hot. In addition, do not forget before checking, clean the dipstick from the oil, that is, the scale must be clean, after again we insert it into the crankcase, take it out and analyze the level.

On some models there are no "probes", instead of them the control plugs are installed or there is nothing. An excellent example, most of the Mercedes boxes, in the crankcase is a valve that regulates the desired oil volume, check, is not required, it is important to check the running quality.

In addition, pay attention to the smell if even the minimum "shades" are felt, then the car is better not to buy, most likely wear in the internal parts approaching the critical level. Inspect the oil on color, shades should be from reddish to light brown.
Check out the presence of metal particles, make it easy, we take white paper, a few drops with a probe "send" to it and see whether the particles of chips are left there.

3. Diagnostics The correct switching is carried out on a heated car. Depending on the model, the year of the "automaton", the signs of proper work may differ. On modern gearbox, the presence of jerks, shocks, clicks, the jolts are not allowed. For old cars in most cases, this nature of the work is easily familiar. The same situation with switching "D" and "R" modes is a small vibration, in old "automata" is normal. Not normal for the "automaton" is a delay with the inclusion of transmission by 1 and more seconds. There is a refill, it means that there are some faults, you need a more detailed check.

In general, you are looking for such an aggregate, where shots, knocks, jolts, smaller.

Checking modes of operation:

Sharp acceleration while driving. For example, if you drove to 4, with a sharp press on the accelerator, the speed will switch to mode below - 1.2 and 3, depending on the modification.

After overclocking, press the brake sharply, the "automatic" must be included with any delay.

When overclocking up to 60 km / h, the position is minimized twice, that is, 1-2, 2-3. If there are small jerks, you should not worry, it is permissible for the "box" except the most modern.

The next moment is slipped. It occurs on the most used cars. To identify slip is difficult, especially not the master. Please note if the turns are growing, the pedal is lowered, and the machines do not go, the same slip. Depending on wear, delay to a pair of tens of seconds, it is already clearly noticeable. Forming for 1-2 seconds is extremely difficult to reveal.

There is also a so-called parking test. It should be applied after the above actions have not revealed faults. So:

Figure gearbox, lock the wheels, use the stops, "handbrake".

Get the engine and press the brake to the maximum, hold to the end of the procedure. During this, we translate the lever to the position "D" and press gas, a maximum of 5 seconds.

We look at this time on the tachometer, with a normally running engine, "box", turns will not rise above 2,500 rpm.

If the values \u200b\u200bare higher, there is some kind of malfunction in the work, it is likely that even by electronics.
The same can be done at the rear rate.

The special situation is with the choice of a car equipped with a hopper. After all, the seller never admits what kind of conditions the car is operated. In principle, for automatic transfers, trailers are not scary, but only if you follow the recommendations of the manufacturer on the load. In this case, it will be possible to avoid serious faults. However, when exceeding the allowed mass, the impact on the "box" is huge. Details about what kind of requirements for the checkpoint can be found at the official manufacturer. In general, the "box" must be calculated for the appropriate loads.

Also, do not forget that the trailer trailer is dispersed, there are options with your own brake system, there are simpler and cheap (most of them). So, for those trailed devices, where there is a self braking system, the load can be increased, but still navigate better on the recommendation of the manufacturer of the "box".

Conclusion

In general, it is clear that during normal operation, no serious knocks, jog should not be shocks. The main thing is to match the acceleration and pressure of the gas pedal.

Checking automatic transmission for defects and malfunctions when buying a used car it is an important part of the inspection of the purchased car, because its value is not a small share of the car value as a whole.

How to check the machine

Automatic gearbox - the thing is rather reliable, but compared to the other parts of the car is almost its most vulnerable part. This is very jams in the snow or dirt and gearbox simply "burns".

Repair the automatic transmission can be repaired, but there is a large number of accurate parts. Dirty, Syrinth, or Repair Error - All this can cause another breakdown. The avoidance of such situations when choosing used machines to the status of an automatic transmission, you need to pay special attention to.

If you can not make this work yourself - contact for.

Checking under the hood

Check the oil level in the gearbox and its condition. To do this, put the ACP lever to the "Parking" position. Get off the car, get the probe from the transmission of the gearbox and wash the oil with the probe. When you insert and get the dipstick again. Now touch the cape with butter to white paper (you can nail). On the oil stain should not be any foreign flakes or metal particles. The color of the new oil is red. If the lubricating fluid is already old, then it becomes brown, and in some cases almost black. Those the smell of oil - it should not have the smell of Gary

If there is no oil probe, then you need to go to a specialized technical center, where experts will fulfill all the necessary work.

Checking standing still

Check the operation of the box can stand on the horizontal site. Put the leg to the brake and translate the handle to the "D" position, after that the machine begins to pull forward, during the inclusion of the transfer there should not be observed any jerks and jerseks. When you transfer the handle to the "N" position, the box is turned off, and in the position " R "- almost instantly turns on, and the car begins slightly pull back. It also should not be excessive knocks and jerks. Let the foot from the brake without adding revolutions, the machine should slowly ride in accordance with the selected "D" or "R" mode. Reference, if when the transmission is turned on, at least a second delay occurs, then you can talk On the wear of the box and the need for its repair.

Stall test

Check is performed only in the heated state standing on the horizontal site. Click on the brake pedal and translate the handle to the "D" position, not releasing the brake pedal. Click smoothly until the gas pedal is stopped at the same time, the car should immediately pull in front, and with further pressing of the gas pedal until the engine speed stops should not exceed 2500 rpm. If the revolutions continue to grow, then the hydrotransformer has a slip, if the engine turnover does not reach and up to 1500 rpm, this also indicates not a state of automatic transmission, as well as the DVS may not produce the required power. This method of checking the automatic transmission is called Stall Test and he is held exclusively on a heated car, while pressing the gas pedal when the brake pedal should not exceed 5 seconds, and the re-test must be carried out no earlier than 10 minutes.

Checking on the job

Take a test drive on the inspected car. Right up to a speed of 50-60 kilometers per hour. Shift shifting should be made at least twice. At the same time, any delays, jerks and jerks should not be. Possible pay at the time of switching gear. Tales, delays or shocks are a sign of a worn outcast, which requires urgent repair. On speed 60 km / hour Press the accelerator pedal until it stops. If the machine is working, then the automatic transmission switches to the lower speed and the tachometer turnover will increase.

Another manifestation of a worn gearbox is when, when pressing the gas pedal, turns are increasing, and the transmission does not switch, the box "sinks".

Drown on the car in various modes whether it is a sharp acceleration or a smooth set of speed, the car should behave naturally without showing any non-correct operation of the gearbox.
For a more complete understanding of the operation of the automatic transmission of your selected model, you must test several cars.

Instruction

Automatic gearbox is a very complex device consisting of numerous parts and seals. Wearing of only one element leads to the incorrect work of the entire unit. Also, the automatic transmission is sensitive to overheating. Half an hour in deep enough to burn the box. Oil in the automatic box should be changed more often than in mechanical, and driving on the "old" oil is more deployed. Incorrect selection of oil poured into a box can spoil it on the very first day of operation. In addition, the automata do not bear repair and will not serve after it. Therefore, practical Americans and Europeans do not repair the box, but change the node assembly.
It should also be remembered that the repair of the automatic box is very complicated and very expensive.

Before checking an automatic transmission, it is useful to find out the cars. It can save time and money costs. If the machine was used in the rental or was restored after a serious accident, the automatic transmission will not last long. The same can be said about the already repaired box. All repair automatic transmissions have problems. And not all workshops can customize automatic transmission. The presence may mean increased dismisses of the machine, caused by the transportation of the trailer.

Checking an automatic box.
First, you should check the oil level in the box and its condition. In this case, the engine must work at idle, the automatic selector stand in the parking position. The probe of the transmission is removed, is wiping with a clean cloth and inserted back. Now you should re-pull the dipstick. To estimate the condition of the oil, the dipstick is cleaned with white paper. On paper should remain a clean and transparent track without metallic or foreign particles. New oil has red. Not new can be brownish, but not black. And not to have a burning smell.
It should be borne in mind that modern automatic transmissions do not have an oil probe. Checking the level and condition of oil is possible only in a specialized technical center.

Testing automatic transmission on the go.
The delay between the moments of selecting the position of the selector "D" or "R" and before turning on these positions of the selector - a sign of a defect. First, it is necessary to warm the car and the box in the position "P" (parking) until the turns will drop to 600-800. Holding the car in place a brake pedal, the selector switches to "D". The machine must immediately choose this mode and start trying to drag the car forward. Everything should happen gently, without jolts and knocks. Next, when switching to "n" (neutral), the box must turn off. Now, when you turn on "R" (reverse), the automatic transmission should also be included instantly, without clicks and stuffs. The car must try to crawl back.
Holding the brake pedal, check the box, switching from "D" in "R" and back. There should be no shocks and knocks. Delay more than 1 sec. When you turn on any mode indicates wear or breakage of the box.

For further checking the box on the go, it is necessary to develop speed up to 50-60 km / h. The transmissions must switch at least two times, gently, without jog and delays. The transfer fact is determined by the light change of the noise of the motor and the drop of its revolutions. With excessive wear of the automatic transmission, push, delay, or a blow at the time of switching.
At a speed of 40-50 km / h, the accelerator pedal should be drowning until it stops. A properly running machine will switch to the transmission below, the engine speed will increase.
If there is an overdrive mode (the button to the left of the automatic transmission selector on Japanese and American cars), it is also checked. To do this, at a speed of 60-70 km / hour, the OVERDRIVE button is turned on by pressing the OverDrive button. Transmission must switch to one up. When you turn off OverDrive, the transmission switches to one down.
The problem of slipping the gear looks as follows: when the pedal is pressed, the turns are growing, but the speed is not added.

If you saw how the automatic transmission is arranged And they presented that the wear of one of the many details and salinists leads to the incorrect work of the entire unit, the answer would become obvious. Automatic boxes are also sensitive to overheating of the transmission oil - it is worth climbing into deep snow and to beat in place for 20-30 minutes to burn the box. There are plenty of examples. Many precision pistons in the machine. It stands one of them to stall how the transmission stops working correctly. Many working parts of the machine are subject to natural wear. In the oil pan is a magnet that attracts a metal powder to itself. Even after 150,000 km, it will be covered with a thick layer of metal plaque. Check the same magnet on the manual box, and it will be completely clean after a similar mileage. In addition, the automata rarely live after repair - there are too many exact parts in them, and the slightest error or dirt grain causes a breakdown again.
Of all the above, we are concluded: the machine is a unit that requires particularly careful attention when buying a used car.

Yes, the machines have become more reliable today, but they still remain the most vulnerable and prone to breakdowns with the subsequent complex and expensive repair.

With incorrect operation, the machine can be soiled for half an hour. One client tried to free his new Audi from a snowdrift and burned the box on the first day of purchase! Repair cost $ 2,000, and a year later, the box broke again.
The machine is highly dependent on the quality of the transmission oil and its condition. Invalid oil type can lead to breakage after half an hour.

Let's try to consider what you need to pay attention when testing the machine, buying a used car. In addition, we strongly recommend contacting a professional specialist to test a used machine - a very reasonable contribution of money.

First, check the machine story, if possible. You will save time and money. If the history of the car suggests that it was used in the rental or was restored after a serious accident, do not even look at her. Ask the seller or the previous owner, whether the repair of the machine was carried out. If the machine has already moved, it is better not to buy such a car. The point is not that all repair transmissions have problems - some of them work better than to repair. The problem is that not all repair shops are able to fix the qualified automatic transmission. And since it is impossible to determine how high-quality was repairs, it is better to give up such a car. Another reason will disturb. The trailer transport causes additional automatic transmission.

How to check the machine gun machine

First, check the oil level in the machine and its condition
The engine runs at idle turns, automatic transmission in the PARK position. Pull out the probe of the transmission and wipe it with a clean cloth. Insert back and pull the dipstick again. Carefully consider the oil. Wipe the dipstick white paper to estimate the condition of the oil. The trace on paper should be clean and transparent without any metal particles or foreign flakes. New oil is usually red. Over time, it becomes a bit brownish, but should not be black. Smoke oil. There should be no burning odor.
At first, this check will seem not easy, but after several cars, you will understand that there is nothing complicated here.
So, if you find that the automatic oil is too dark, it has metal particles or smells at Gare, it is better not to buy such a car.
Consider the fact that many modern automata are coming without oil probe, and checking the oil level is possible only in a specialized technical center. In this case, only test check-in remains for controlling the machine.

Test check in order to check the machine
Be extremely careful when you keep a car. Pre-configure the seat and mirrors, check the operation of the brakes.
The first sign of the defective automaton is the delay between the moment when you select "D" or "R" (REVERSE) transmission, transmission.
A little warm the car with a transmission in the Position "P" (Parking) until the turns fall to 650 - 850 / min.
Leg on brake pedals, switch to "D" (Drive). The machine must immediately choose this mode - feeling it starts to drag the car forward. The inclusion process should occur gently without jolts and knocks.
Switch to "N" (Neutral), and the box must turn off. Now turn on "R" (Reverse). Again the machine must be engaged instantly - you feel that the car wants to twist back. Again there should be no shocks or knocks.
Now, holding the brake, switch from D to R and back. Again no shocks or knocks.
If there is a delay of more than 1 s when the transmission is turned on, the box is either worn or already requires repair.

Now we need to ride
The automatic transmission lever in the "D" position, remove the leg from the brake and gently accelerate. Before the speed of 50-60 km / h, the transfers must switch the minimum twice (from the first to the second, from the second to the third).
All shifts should be soft without jolts and delays.

The moment of switching the transfer is determined by a slight change in the noise level of the engine and the drop of its revolutions. If the automatic transmission is overly worn, it switches with an impetus or delay and even a blow (especially from the 1st to 2nd).
At a speed of 40-50 km / h, press gas until it stops, with the correct state, the machine will switch to the transmission below and turn turns.

Next: Check OverDrive (if any). This side button on the left of the ACP lever for Japanese and American cars.
At a speed of 60-70 km / h on a flat road, switch to ON mode by pressing the Overdrive button. The machine must switch to the transmission up. Switch to the "OFF," the machine will drop into one transmission.
Another problem of the machine - slip gear. You press gas, turns grow, the speed does not increase.

Even one of the above mentioned disadvantages is enough to refuse to buy a car.
Test check-in should be long. Often the boxes work normally in a cold condition, and in the warmly begin to strike and vice versa. Therefore, it is better to spend more time to check than then to deal with serious repairs. The working box of gear does not twitch, does not knock, it does not raise and does not produce noise when switching at any speed and any oil temperature. If the seller begins to assure you that shakers, vibration and the like things "ordinary phenomenon" for this car, because it did not harm or something like that, do not trust him. If "" or flashing Overdrive will appear during the test, discuss the problem with my mechanic.