94 540 engine light on - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 08-17-2009, 06:48 AM
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94 540 engine light on

Does this sound like it could be the o2 sensor?
1:engine light comes on and the car runs rough
2:rough idle
3:smell of gas while driving
4:taking more fuel
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#2 (permalink) Old 08-17-2009, 07:24 AM
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Could also be the MAF, a diagnosis would tell you.

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#3 (permalink) Old 08-17-2009, 02:51 PM
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Cool Check Engine Light

Quote:
Originally Posted by chuck01 View Post
Does this sound like it could be the o2 sensor?
1:engine light comes on and the car runs rough
2:rough idle
3:smell of gas while driving
4:taking more fuel
It takes computer assistance to fix another computer(yours).

Take away the guesswork and, like the man ^ sez, get the car scanned.
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#4 (permalink) Old 08-21-2009, 03:33 PM
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Or do the "stomp" way to get the code by counting the times the check engine light flashes. Check the Bentley for procedure and code definitions.
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