Car automatic transmission BMW 5 Series E28

General information about automatic transmission
Earlier models are equipped with a 3-speed automatic transmission (AT) ZF 3HP 22. The latest models use a 4-speed automatic transmission ZF 4HP 22 or ZF 4HP EH...

General information about troubleshooting
Automatic transmission failures can be caused by five main reasons: poor engine performance, out of adjustment, hydraulic problems, mechanical problems, or...

Checking the operation and replacing the start enable switch / reverse light switch
If the engine starts only when the selector lever is in the "P" (Park) or "N" (Neutral) position, or the reverse lights do not come on when the selector lever...

Removal and installation of automatic transmission
If your vehicle's radio is equipped with an anti-theft system, make sure you enter the correct code before disconnecting the battery. If the instrument panel...

Replacing oil seals
There are three seals on an automatic transmission - the torque converter seal, the selector shaft seal, and the transmission secondary shaft seal - that can...

Automatic Transmission Fault Diagnosis
Due to the complexity of the AT design, it will be difficult for the average amateur mechanic to accurately diagnose its failures and perform repairs. In the...

Adjusting the selector lever drive
Jack up the vehicle and support it securely on axle stands. On some models, you may have to remove the exhaust system (see chapter Exhaust system ) and a heat...

Adjusting the throttle cable
1. Before starting the adjustment procedure described below, check the accelerator cable adjustment with the throttle fully open and adjust it if necessary...

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