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E34 (1989 - 1995)

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Old 09-02-2005, 02:49 PM
ArmyJeff ArmyJeff is offline
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Location: Landstuhl, Germany
Join Date: Sep 2005
Posts: 1
Mein Auto: 1991 525i (E34)
Engine Revving, then stalling

I have lived in Germany for some time now, and this is the fifth BMW I have owned. I am experiencing a problem that I cannot diagnose.

The problem is with my 1991 525i. It only has 200,000km (120,000mi) on it. The engine is revving up and down when not in gear. It is worse when rolling in neutral than when simply stopped. It jumps from 500rpm to 1500rpm, and often just stalls out. I have never seen this before and am not quite sure what to do.

The problem is steadily getting worse, and I am getting desperate.

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Old 09-20-2005, 05:50 AM
xcitesu xcitesu is offline
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Location: Isle of Wight
Join Date: Sep 2005
Posts: 6
Mein Auto: 525i SE

Similar prob to mine, have been told to clean or replace the idle control valve and also check vacuums for air leaks
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