1994 530I Rough Idle/Engine Light - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 01-02-2010, 11:09 AM
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1994 530I Rough Idle/Engine Light

Help?? Engine light came on - replaced both oxygen sensors, replaced computer, replaced MAF meter - still running rough - although when MAF meter is disconnected, check engine light is still on car idles and runs smooth. When reconnection of MAF meter car will not idle or run properly. Seems to be worse when cold. Any ideas?
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#2 (permalink) Old 01-02-2010, 11:18 AM
OMFG another one!?
 
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witeshark is just really nice witeshark is just really nice witeshark is just really nice witeshark is just really nice witeshark is just really nice
Are there any cracks in the intake ducting?

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#3 (permalink) Old 01-02-2010, 12:16 PM
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No, we have not checked this thoroughly, how would we check this?
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#4 (permalink) Old 01-02-2010, 12:40 PM
OMFG another one!?
 
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Gently pull on it maybe a very gentle twist and see if any become more visible.

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#5 (permalink) Old 01-02-2010, 01:40 PM
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We did as you suggested and checked thoroughly, no cracks are visible. We do appreciate your help. Would you have any other suggestions? One thing that we did not replace is the air intake temperature sensor - any thoughts on that?
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#6 (permalink) Old 01-02-2010, 03:15 PM
OMFG another one!?
 
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No harm in testing it.

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#7 (permalink) Old 01-03-2010, 09:42 AM
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Tested that - it is okay. We are thinking that maybe the new MAF meter that we ordered may have a problem. We looked over it carefully and it seems one of the plug pins looks cracked. We are going to take it back and have them get us another one. Do you have any other ideas as to what we might check? P.S. Love your '89 - looks nice - love the older styles!
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