Renault Megan 2, 1.6 engine, automatic transmission. I took a new one in 2009 (the car was produced in 2008), traveled a little less than 60,000 km for three years. All three years, as the last donkey, he was serviced by an official Major dealer (on Tsvetochny pr-de) in which he took the car. I hoped that since this is an official dealer, then at least they will do their job normally, well, not far from home + a discount card. Although every year the disappointment in this place grew more and more.
Last Friday I parked the car at work, after a couple of hours I sat down again and started looking for it, switch the machine to position D or R and there is no result. The car is stationary. Shows everything as it should on the computer. I put the selector in D, on the computer D lights up, I put in R on the computer R is on, but it does not go. I moved the lever to position N, called a tow truck and took everything to the same Major. Oh, and another extremely interesting little thing, five days before the breakdown, went through MOT. The car was taken and diagnosed and ATTENTION. they said that everything was fine with me in the diagnosis, but to my question and what to do, they said that with similar problems they (Major) in such cases send an alleged request to those. support for Renault (Avtoframos). Five days later (including Saturday and Sunday) they called and said that it was necessary either to change the box, or to sort it out (though they don’t know what the problem is in the automatic transmission without overhauling the box). Although I have a suspicion that they already knew this in the first hours after taking the car. To my question who will do this and how much it costs, they said that they have a company with which they have signed an agreement and it will cost from 90,000 to 120,000 rubles. From the above, I have a number of questions for you, dear readers.
Video (click to play).
1) What do you think, could at a simple MOT (without changing the oil in the automatic transmission, they said that they did not touch the box at all), spoil the automatic transmission accidentally or on purpose? A little less than a year ago, before the above events, I changed the valves in the box ...
2) Who had a similar problem, is there any chance that the problem is actually not in the box?
3) Who can advise a place where they carry out high-quality automatic transmission repairs for Renault Megan 2?
4) How long do you think the repaired box “goes by”?
Many thanks to everyone who responded.
Post has been edited Eugene (Megan 2 1.6 automatic transmission) – 2.8.2012, 21:34
Renault is a large automotive concern with a history of more than a hundred years. The range of automatic transmissions used by Renault is quite wide. These are the developments of firms specializing in automatic transmissions and joint developments with the Peugeot / Citroen concern. Renault has different automatic transmissions, there are both "indestructible" models and cheap, unreliable ones.
Renault cars have different automatic transmission models
Renault Megan is also equipped with a JF011E CVT. This is a successful development of the Nissa subsidiary Jatco. Installed on cars with engines up to 2.5 liters. The JF011E variator is considered one of the best in the world and differs from analogues in its reliable design, unpretentiousness and cheap price. Among continuously variable transmissions, JF011E and its modifications are real monopolists, in fact, they have captured the market.
This variator is highly reliable and used correctly. If the Renault Megan automatic transmission undergoes timely maintenance, it can be operated over 250,000 kilometers. The Megan CVT repair rate is very low.
Most of the cases of maintenance and repairs of the Renault Megan CVT end with the change of oil, filters and sump gaskets.Filters vary in size or due to different pallet designs.
The Renault Megan CVT filter is reusable and changes only when the oil is burnt. The remains of the adhesive layer of the clutches cannot be removed from the filter. Changes annually or every 30,000 kilometers.
Oil purity is critical for the Renault Megan CVT. Working on old oil is invisible to the driver, but will quickly destroy the variator.
Renault Megane is equipped with a CVT JF011E
The stepper motor (responsible for adjusting the position of the belt and the gear ratio) quickly develops its resource. After running out, the variator stops adjusting the speed and freezes at one number. Fortunately, its replacement and diagnosis is possible without removing the box.
High pressure oil pump. With its abnormal operation, the pressure decreases and the belt begins to slip. Only pump replacement helps.
The big problem with the Renault Megan CVT is the breakage of the belt holder - they are not produced, they are not restored.
Teflon rings are also a consumable item. Without their timely replacement, the clutches quickly burn and the box needs repair.
When the Renault Megan CVT overheats, the speed sensor depletes its resource.
The belt is the most important consumable; only BOSCH produces them. In comparison with the first generations of variators, the durability of the belt has increased significantly. But still it is not more than 150,000 kilometers. When used in winter, the belt breaks down a little earlier. If you bring the box to the point where the belt develops, things will get even worse.
Renault Megane with CVT JF011E
It is very dangerous to drive on an unheated CVT, especially in winter. As well as overheated. For frying regions, it is better to equip the variator with an additional cooling radiator. Do not drive the CVT over 160 km / h.
Renault Logan comes with an AL4. This is a very old development of the Peugeot / Citroen concern, which began to be produced in 1999. The AL4 automatic transmission is designed for small cars with front-wheel drive. The design of the Logan automatic transmission is very simple and has a low cost price. It was intended to accustom European consumers to automatic transmissions.
One of the main disadvantages of the Logan automatic transmission is the use of a heat exchanger. The transmission is initially operating in extreme thermal conditions and is very sensitive to overheating. The increased risk of overheating occurs for these transmissions after 80,000 kilometers on a new box. When using the Logan automatic transmission without overheating, it is practically eternal. Therefore, during the first overhaul, the heat exchanger is replaced with a radiator.
Mineral oil is used for this box.
Renault Duster automatic transmission is a modified DP0 transmission called DP8.
Renault Duster is equipped with DP8 automatic transmission
This automatic transmission is mainly used for all-wheel drive vehicles. Many design and technical flaws in the DP0 transmission for Renault Duster have been eliminated.
The weak point of the Renault Duster automatic transmission is the pressure solenoid regulator. Their resource is rather small, they work in a tense mode, in comparison with the rest of the solenoid group. If the pressure solenoid on the Renault Duster automatic transmission fails, it will begin to supply increased pressure in the interior of the automatic transmission, which can lead to its rapid failure.
The bushings in the Renault Duster automatic transmission function as seals. When these bushings wear out, they begin to leak oil, which leads to a whole chain of problems inside the Renault Duster automatic transmission. The packets begin to receive less pressure, the computer opens the solenoids to the full cross-section, the pump starts constantly operating at full power. As a result, the clutches are quickly destroyed on the Renault Duster automatic transmission, which then contaminate the inside of the box with their remnants. The pump depletes its resource very quickly, and the insides of the valve body are quickly washed out by large streams of contaminated oil due to abnormal operation of the solenoid.With any repair of the Duster automatic transmission, they must be diagnosed with their condition. At the first signs of wear, they are replaced in a set.
The hydraulic unit really does not like dirty oil and overheating. From overheating, the metal of the plate can lead, the valves will wedge, it can break off the springs.
If the problem is started and the box has been operating for some time on dirty oil or under high pressure, then it is necessary to change the clutches. Their wear occurs evenly, even under extreme conditions, and they are changed as a set. To destroy the clutches, just a few hours of driving on an overheated box is enough. In such a situation, the brake band is usually also changed.
With aggressive acceleration and slipping, O-rings (rear covers, for example) often fail, which can also lead to oil starvation.
Since 2000, Renault Laguna has been equipped with a five-speed automatic AW55-50SN from Aisin. Initially, it was run in Volvo cars and in the first years a lot of problems and shortcomings were solved. At first, the Renault Laguna automatic transmission often suffered from the ingress of antifreeze into the oils. By themselves, the boxes from Aisin are usually ideal, but when you interfere with their settings for the cars of other engineers, non-ideal settings and modes can be selected for it.
Renault Laguna is equipped with a five-speed automatic transmission AW55-50SN
Renault Laguna hydraulic plates did not live long before the last plate modification. There are many modifications. A common symptom of abnormal operation of the Renault Laguna valve body is premature failure of the iron due to insufficient pressure. Dirty oil can eat up the valve ports, causing the plungers to wedge and the gearbox to suffer from oil starvation. The main symptom is usually bumps and delays when shifting into third gear.
Renault Laguna hydraulic plates are usually not rebuilt. Even their diagnostics are very complicated and expensive, not to mention repairs. Therefore, it is best to periodically clean the hydraulic plate and change the oil. If the valve body is not serviced, then the abnormal operation of the valve body can damage the insides of the Renault Laguna box.
Problems with the pump follow in popularity. Usually the pump cover gland and bushing are changed. Usually they are changed when a Renault automatic transmission overhaul is required.
During the overhaul of the Renault Laguna automatic transmission, the torque converter must be repaired. For older machines, it is also necessary to replace clutches, steel discs and clutches.
During overhaul of automatic transmission AW55-50SN, it is necessary to repair the torque converter
The automatic transmission iron is very reliable, usually only a set of bushings is ordered. Aggressive driver can kill the rear planetary gear. The wear of the drums occurs due to the abrasion of the Teflon rings, which leads to burnout of the clutches.
These automatic transmissions in the hands of a calm and disciplined driver will drive for a very long time.
Since 2007, Renault Laguna has been equipped with a six-speed automatic transmission JF613E from Jatco. It is found on Nissan and Mitsubishi cars with engines up to 3.5 liters.
This automatic transmission is a direct competitor to Toyota transmissions, surpassing them in terms of cheapness and reliability. The term for the first overhaul usually occurs after 200,000 with a timely oil change.
This box, like all modern ones, combines an electronic control unit and a valve body in one case. This is its main problem - the more complex the node, the less reliable it is. For this class of automatic transmission, the torque converter lock is rarely activated and is used sparingly. Solenoids live longer than usual, usually before the first major overhaul. The computer and the firmware do not use the box to its fullest, thereby greatly extending its resource, which is not typical for modern machines.
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Since 2007, Renault Laguna has been equipped with a six-speed automatic transmission JF613E from Jatco
Nissan engineers have introduced several developments into this box that have improved acceleration and reduced fuel consumption. This kills the torque converter friction lining faster, which in turn quickly contaminates the oil. But refer only to automatic transmissions, which are exposed to unnecessary stress due to aggressive drivers.
The iron of this automatic transmission is very reliable and is designed with a huge margin of safety. The oil changes every 50,000-60,000 kilometers.
Renault automatic transmissions are quite complex. With your own hands, you can replace the oil filter and oil. If the first symptoms of an automatic transmission malfunction appear, you must immediately go to the service and make diagnostics. It is better to entrust Renault automatic transmission repair to experienced professionals.
