Hello
I've got a strange problem with my '87 w201 2.0D. After 30-40 km a steering becomes hard, a steering wheel doesn't want to return to center automatically. When I stop the engine and wait a few minutes everything returns to normal and works properly for another about 40 km.
I replaced the both lower ball joints and the idle arm bushing. There is not any play in steering and suspension.
Now I'm thinking of a power steering pump. It doesn't leak, but I can hear abnormal (in my opinion), ratteling sound from it.
What do you think? Maybe a steering box is cousing the problem?
Thank you,
regards
Maciej Wilk Poland