BMW 3 Series E30
since 1983-1994 release
Repair and operation of the car
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engine
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. Exhaust system
+ 8. Transmissions
+ 9. Coupling
+ 10. Brake system
+ 11. Running gear
+ 12. Body
+ 13. Electric equipment
- 14. Useful tips
14.2. The changed numbers
14.3. Purchase of the old car or mysterious set of figures and letters
14.4. Durability of the car
14.5. About parallelism of bridges of the car and trailer
14.6. Preparation of the car for winter
14.7. Rule 35
14.8. Choice of the used car
14.9. Engine oils
14:10. What needs to be known, changing oil
14:11. Emergence in deposit oil
14:12. Whether it is possible to mix import oils?
14:13. "Eats" much, but quietly goes
14:14. It is rather live, than is dead …
14:15. It is not got - useful tips
14:16. Visit to car service
14:17. A gear belt for the gas distribution mechanism drive
14:18. Wear of pistons
14:20. Bearings of engines
14:21. Pollution of the engine
14:22. As the conditioner works and what to do if it failed
14:23. Conditioner: not only "pluses", but also "minuses"
14:24. Rules of service of the conditioner
14:25. Antifreeze you should not disturb with antifreeze …
14:26. What should be known upon purchase of the air filter
14:27. Engine overheat
14:28. What should be known to the owner of the car with the injector engine
14:30. Possible malfunctions of the rechargeable battery
14:31. What to do with the failed generator
14:32. The belt is guilty, and we blame the generator
14:34. Rub in one - or how to save the catalyst
14:36. Features of operation of the brake system
14:37. Malfunctions of the brake system
14:38. Brake fluids
14:39. ABS: natural choice
14:41. We update rims
14:42. Scheme of marking of a car tire
14:43. Metal corrosion
14:45. What creaks?
14:47. Safety cushion: troubles or pleasures?
14:48. We fit well?
14:49. Anticreeping "immunodeficiency"
14:50. Why headlights grow dull
14:52. About the correct adjustment of headlights
14:53. Electric motor
14:54. From change of the places "composed" nothing changes?
"What can cause pro-slipping of coupling or its incomplete switching off when pressing a pedal?"
Pro-slipping of coupling is shown that at quite serviceable engine the car badly overcomes rises, slowly disperses. It can be caused by oiling of disks, their strong wear, decrease in elasticity of springs, lack of a free wheeling of a pedal of coupling.
Incomplete switching off of coupling causes difficulty and noise at gear shifting and can lead to premature failure of synchronizers and to the accelerated wear of teeths of the transmission. This malfunction most often arises at pollution, a distortion or deformation of disks, the wrong adjustment of position of levers of switching off, and also at too big free wheeling of a pedal of coupling.
It must be kept in mind that noise in the transmission is not always a consequence of incomplete switching off of coupling. This noise can arise at wear or the wrong adjustment of bearings, and also at wear or the wrong gearing of conic gear wheels. The strong knock in the specified places speaks about existence of the serious malfunction demanding an immediate stop of the car and repair of the unit.
"What can cause a zatrudnennost of gear shifting or their spontaneous switching off?"
Difficulty of gear shifting or their spontaneous switching off – result of wear of locks and clamps or the drive of the mechanism of gear shifting. Here not to do without serious repair.
It is possible to prevent similar malfunctions the next ways: periodically carefully to check reliability of fastening of all units and details of the power transmission, and also to watch oil level in the transmission and in due time to change it.