HELP!!!
Contributors
Joined: Aug 2004
Posts: 952
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From: San Diego
My Ride: 2015 535D M Sport
How cold is it? A cold engine requires a very rich mixture initially, but it is also limited to keep emissions low. The ECU will adjust the fuel/air ratio significantly as the engine warms up. It also is working to warm up the catalytic convertor to minimize emissions as soon as possible. All this adds up to a few minutes of potentially rough running at various temperatures below normal operating temperature. If it does not occur at normal operating temperature, I wouldn't worry about it.
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Hmmmm... Have you ever had the car's software refreshed? I recall some issues like this being corrected with an upgrade, but that was some time ago. In any case, it appears you need to visit the dealer. My engine is smooth as silk at most times and is a bit rough only on the warm-up cycle.
Senior Members
Joined: Sep 2004
Posts: 2,074
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From: New York, NY
My Ride: '05 545i - scheduled for ED pickup in Munich on 7/22!
Originally Posted by Bimmer32' post='225750' date='Jan 17 2006, 09:25 PM
Now, on my old 5.0 Mustang, it did what you describe. Then again, it was an American car with 60K+ miles on it.
My 545 doesn't shake, but I had a '99 Jeep Grand Cherokee Limited V8 that did. Must be an American thing...
Contributors
Joined: Oct 2004
Posts: 14,776
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From: So Cal, USA
My Ride: 545iSMGSilver GrayAuburn Dakota LeatherLogic 7 Premium SoundSports Package
OK I got my car back just now and I chceked. The car doesnt shake, only a little movment like a slight jolt when I rev it a little harder at the beginning which feels normal to me. I'm pretty sure thats just the torque of the V8 jolting when reved.
Sooooo in that case it does sound like your engine mount might be bad... not holding the engine still when reved and not absorbing the engine jolts.
Sooooo in that case it does sound like your engine mount might be bad... not holding the engine still when reved and not absorbing the engine jolts.
Senior Members
Joined: Nov 2005
Posts: 1,113
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From: Albany, NY
My Ride: '04 545iS 6 spd, bought new via eBay, 11/05; Blk/Gry, Cold, L7, PDC, BMW Rear seatcover for pets.
First "Bumwa" was a new 1971 2002. High performance 5s since 1987. Beamer motorcycles too, currently on an 07 BMW K1200 GT; also a Moto Guzzi 1000 SP III.
As mentioned above: Sounds like classic broken motor mount. Get it in to Service.
Ray Hull
Ray Hull