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Re: 535i rough idle (archive)

[ Follow Ups ] [ 5-series (E28) Message Board ] [ Msg. Board FAQ ]

Posted by Jim Ten Broeck on January 31, 2001 at 17:33:15:

In Reply to: 535i rough idle posted by Tom G on January 30, 2001 at 22:59:55:


I've got a new head, plugs, rotor, air filter. I've cleaned the throttle body, the idle control valve, replaced the throttle gasket and checked all intake hoses for leakage. The valves are excellent and well adjusted. The idle is still a bit rough. I'm thinking of replacing the O2 sensor next, or maybe the idle control valve, or the speed sensor. Acceleration is excellent and when running on freeways runs excellent. Any ideas where to start?


I have the same problem which I am currently diagnosing. I have learned that the fule injectors over time can wear out and/or become clogged with carbon. My car too appears to run and accelerate fine, but when at a standstill, it shakes.



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