And produced at the enterprises of the company "PEUGEOT"

Automatic transmission has four gears forward motion, one rear and a torque converter lockup clutch:

• Max torque: 210 Hm
• Weight: about 75 kg.
• Active and auto-adaptive automatic transmission system

The machine has an identification index. Engraved on the lid, it consists of the manufacturer's index and the product's serial number.

The AL4 automatic transmission consists of four parts:

1. Main unit
2. Torque converter block
3. Hydraulic unit block
4. Cap

The hydraulic unit is located at the rear of the automatic transmission. it is not equipped with a dipstick

In addition to the normal gearshift modes, the AL4 automatic transmission has a sequential ( sequential switching type TIPTRONIC PORSCHE) gear shifting by the driver and the selector for selecting special programs such as sport mode, and forced engagement of the first and second gear.

The principle of operation of the hydraulic part of the automatic transmission does not differ from the principle of operation of a conventional torque converter. It is equipped with a two-way torque converter lock-up clutch, which provides a mechanical link between the engine and an automatic transmission (automatic)

Torque transmission.

The torque converter lock-up clutch is hydraulically controlled by a solenoid valve located on the hydraulic block. The operating mode of the torque converter lock-up clutch is included in the computer program of the machine.

• Four forward gears
• Reverse gear
• Selector neutral position

This is a planetary gear type "SIMPSON 2"

The automatic transmission also has installed sensor speed.

In the outline hydraulic system Automatic transmission available:

• oil pump
• strainer
• hydroaccumulator
• thermostat
• heat exchanger
• solenoid valve for flow through the heat exchanger
• six sequential switching solenoid valves
• unloading valve
• pressure control solenoid valve
• pressure limiter

Sensors for automatic transmission AL4

The oil temperature sensor in the box is built into the internal wiring near the valve body and informs the computer about the temperature of the oil inside Automatic transmission.

The turbine wheel rotation sensor is installed next to the left wheel drive, informs the computer about the rotation of the turbine wheel, the sensor information determines the decision to change gear, it also detects slip in the torque converter.

The output rotation sensor is located immediately behind the main electrical block, it informs about the output element rotation speed. Together with the turbine wheel speed information, the need for gear shifting is assumed. Information about slippage (slippage of the locking clutches) and brakes is also transmitted to determine the required moment for switching. In Peugeot 307 and 807, this sensor information has been replaced by speed sensor information, which provides aBS system and ESP.

Linear pressure sensor. Installed at the very bottom of the box. It provides the computer with information on the value of the line oil pressure. This information enables the computer to compare the measured pressure with the value entered into the computer, as well as to regulate it by acting on the pressure solenoid valve.

Automatic transmission computer

The Box Computer has a connection:

1. from aBS system to support the engaged gear during regulation
2. with fan information to improve cooling
3. with climate control system, for switching off when switching

Safety precautions associated with the rocker (selector lever):

In order to avoid various mistakes when driving a car equipped with an automatic transmission, a protection system has been introduced associated with the backstage lever (selector)

• Shift lock system

The "Shift lock" function locks the selector lever in the parking position (P), using an electromagnet installed in the selector panel. The selector is unlocked with the ignition on and the brake pedal depressed.

• Key lock function

Mechanical blocking of the key (prevents its removal from the lock) if the position of the selector when the ignition is turned off is not in the parking position.

• Engine start interlock

Blocks engine start if the selector is not in park or neutral.

Next to the selector lever are the buttons for switching programs

• Sport program

Gear shifting takes place on increased revs motor, the changeover is delayed during deceleration.

• Snow program

The car starts moving away from second or third gear, gear changes are less frequent.

• Program "1"

The first gear is forcibly included.

Light signaling device EOBD (check-engine)

It warns the driver about the presence of an anomaly (error) in the operation of the automatic transmission, which can impair the operation of the toxicity reduction system. The box computer detects the error and transmits it to the engine computer, which in turn turns on the alarm EOBD

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Equipped with automatic transmission model DP0 / AL4. Average service life of this transmission is up to overhaul - 200 thousand km. mileage. Automatic transmission solenoids, which, in fact, are consumable elements inside the gearbox, must be changed for the first time at a run of 70 t. Km. Usually two solenoids are changed at once, the most loaded and therefore most often failing.

If you regularly change the fluid in the automatic transmission (every 30-50 t. Km), do not operate the box with overload (slipping, driving with a trailer, driving at maximum speeds for a long time, etc.), then the DP0 box can last up to 250 tons km

Common signs of problems in the Peugeot automatic transmission:

• Extraneous noise
• Vibration
• Jerks
• Blows
• Oil leak in automatic transmission
• Dark oil with a specific odor

All of these symptoms may indicate the need for prevention or repair of automatic transmission.

Problems specific to automatic transmission DP0

• Automatic transmission gets into emergency mode (most often diagnostics will reveal a pressure error)
• Sensitive "jerks" from 1st to 2nd gear. Manifests itself in "traffic jams" on low gas
• The automatic transmission does not switch to 2, 3, 4 gears.
• The car does not move in R and D mode.
• "Overrun" of the engine speed by the tachometer without changing the vehicle speed (loss of traction). It mainly occurs when changing gears.

Peugeot cars with engine displacement over two liters

These Peugeots are equipped with an automatic transmission of the TF80SC model. This is a Japanese gearbox manufactured by AISIN. According to statistics, the average service life before the overhaul of this automatic transmission, with regular maintenance and a calm driving style, is approximately 180-220 thousand km. mileage. In the best case, this figure can even exceed 280 t. Km.

However, if you do not regularly change the fluid in the automatic transmission, then the overhaul of the unit is possible already at the car's mileage of 120-150 t. Km. Although this automatic transmission for Peugeot is quite reliable, but of its specific problems it is worth noting the "fear" of overheating and criticality to the quality of the fluid.

Complaints about the execution of the automatic transmission can be quickly and relatively inexpensively (especially when compared with a major overhaul) eliminated by contacting specialized service after the first symptoms.

Peugeot automatic transmission repair - our profile. What is the resource of the Peugeot automatic transmission and how to extend its life?

First, let's say a few words about the AL-4 automatic transmission itself.

Adaptive automatic transmission AL4 with “Tiptronic System Porsche” is installed on most Peugeot and Citroen cars, produced in France in partnership with PSA and Siemens. The box is quite old, however, in 2004 it was slightly modernized and some “childhood diseases” were eliminated.

The first, most common automatic transmissions AL4, installed on the Peugeot 206, 307,406, 407, Citroen Xantia, Ksara, C4, C5 of the first years of production, were especially unreliable. On fresh cars, the characteristic "diseases" of AL4 are much less common, but only under conditions correct operation and frequent oil changes. Nevertheless, the automatic transmission of Peugeot, alas, is still far from ideal. So that repair of automatic transmission Peugeot 308, 307, 206 after 2-3 years of operation is a common thing.

How to avoid an early repair of a Peugeot automatic transmission?

To prolong life peugeot automatic transmission, to avoid emergency operation and overhaul of automatic transmission Peugeot or Citroen, you must follow several rules of operation and maintenance of the "machine". This is especially true of the "problematic" automatic box AL4 transmissions installed on Citroën and Peugeot.

It is necessary to warm up the automatic transmission as well as the engine in the cold season (when warming up, switch the automatic transmission lever to the “Drive” position, remembering to put the car on the “handbrake”);
Try to avoid wheel slip on slippery roads;
Do not shift the gear selector lever unnecessarily;
Carry out a periodic (every 30 thousand km) partial or complete (in case of disassembling the box) oil change in the automatic transmission Peugeot - Citroen (LT71141). This moment is especially important, because official dealers such a procedure is carried out only at the request of the client, because the cunning manufacturer does not recommend changing the oil in the automatic box at all. (We must sell them boxes). So the automatic transmission of Peugeot of 60 kilometers "go" for thousands of kilometers, although, with a regular oil change once a year, they could serve at least three times longer.
So we advise you to carry out automatic transmission maintenance on time with preventive diagnostics.

How does your Peugeot show when an automatic transmission needs repair?

When should I go to the “doctor”? When necessary repair automatic transmission Peugeot 307, how much will it cost to repair a Peugeot 308 automatic transmission, how to understand that your baby Peugeot 206 has an automatic transmission?

It usually starts with bumps and jolts when shifting gears. A simple replacement of the valve body solenoids can help at this stage.

It happens that it even helps for a long time. When further development "Disease" spontaneously starts to turn on either the sport mode or the winter mode of the automatic transmission. “Automatic” gets into emergency mode and does not shift above the third gear. In this case, it is no longer possible to do without major repairs.

Automatic transmission repair cost

On average, repairing a Peugeot automatic transmission is not very expensive. If we are talking about replacing the valve body solenoids, in our car service it will cost about 15 thousand rubles, together with spare parts and oil.

Overhaul of a Peugeot automatic transmission costs from 30 to 90 thousand rubles, the exact cost is determined after removing the automatic transmission from your Peugeot or Citroen, opening the automatic transmission and troubleshooting it. When troubleshooting, the condition of the brake drums and belts, clutches, valve body, pistons, oil pump looks. The torque converter (bagel) must be opened and repaired, all bronze bushings, oil seals, etc. are also changed. After assembling the automatic transmission, the valve body is already on the machine adjusted using a diagnostic computer.

Oil change in automatic transmissions of Peugeot and Citroen costs 3000 rubles. So it is more profitable to change the oil more often and forget about the repair of the Peugeot automatic transmission for a long time.

This is how the valve body just removed from the AL4 automatic transmission looks like. The ill-fated hydraulic valves are marked with green numbers 1 and 2.