528e 1985 idle problem - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 10-11-2010, 04:33 PM
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528e 1985 idle problem

Hello, I'm thinking about buying an 1985 528e. It has 134,ooo miles decent body nice interior, loaded. It has a problem when at idle. It revs up and then drops down to low idle back and forth... Driving it does fine. When you sit in idle it starts again. If you remove the air filter and block the air intake it levels out. Is this a minor problem or major problem about to occur. The car is $1000. I don't want to put another grand into it. Thanks for ideas and coments.
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#2 (permalink) Old 10-11-2010, 07:59 PM
OMFG another one!?
 
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Check the intake ducting for cracks. This is what caused the issue on my E30.

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#3 (permalink) Old 10-11-2010, 08:29 PM
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Do you mean the cast aluminum gets cracks?
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#4 (permalink) Old 10-11-2010, 08:41 PM
OMFG another one!?
 
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No, the plastic ducting bits near the air filter.

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