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BMW 3-Series (E90 E92) Forum
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Tach bouncing around = rough idle issue?
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| 12-11-2008, 12:37 PM | #1 |
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Second Lieutenant
 
11
Rep 221
Posts |
Tach bouncing around = rough idle issue?
I have noticed over the last 5,000 miles that my tach has been bouncing around weirdly at idle. Nothing huge, no almost stalling or anything. It just bounces around about 50- 100 rpm in an erratic fashion (kinda like it is possessed or something)?
Again it does not seem like anything life threatening, but I was wondering if others are having a similar issue? Also, my friend just took her car in for a cold start issue and ended up shelling out $1800 for a cam sensor replacement, which I don't want to do. I will see her later today and see if her car has the same bouncing around or if the tach sits there.
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"Happiness is found in owning a BMW, bliss is is found in modifying the heck out of it!"
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| 12-18-2008, 12:50 PM | #3 |
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Major General
 
143
Rep 6,333
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same issue here from the first mile till 42500 miles. the tech says its normal.
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