90 535i Rough idle & acceleration problems - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 04-30-2009, 10:03 AM
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90 535i Rough idle & acceleration problems

Hey guys, I have 90 535i and recently it has started running rough it barely idles and when u go to push the gas peddle it dies, I recently put a chip on it and I'm wondering if thats the cause of the problem. I have also changed the maf and that didn't change anything.
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#2 (permalink) Old 04-30-2009, 10:18 AM
OMFG another one!?
 
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Maybe a check of the ignition and fuel systems?

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#3 (permalink) Old 04-30-2009, 10:42 AM
Help from over the pond
 
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Could have a vacuum leak check out all the vacuum/ air intake hoses.

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#4 (permalink) Old 04-30-2009, 11:39 AM
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It is also throw out a check control code i have tried searching for it but can't find what it is.
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#5 (permalink) Old 04-30-2009, 04:55 PM
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535i

Nice car, that. Try putting the old chip back in and check things out-I once had an 88 735i with the same engine, put in a Bavarian Autosport Chip and it ran like shit. I would also change the fuel filter if you haven't done so lately.
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