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Check Engine light comes on when warmed up

 
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bimmerjo



Joined: 24 Jun 2006
Posts: 389
Location: Aurora, Mo

PostPosted: Sun Aug 03, 2008 9:48 pm    Post subject: Check Engine light comes on when warmed up Reply with quote

On my 88 635csi the check engine light comes on when it is warmed completely up, i'll shut off the car and let is cool off, and the light is still there. BUT if i disconnect the battery for about a minute or so AFTER the engine is cooled off (to kinda reset everything) the light is gone, untill it is yet again warmed up.. any suggestions as to what this might be? i'm personally thinking its oxygen sensor. but if anybody as any suggestions, please let me know
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1988 BMW 635CSi - Black
1988 BMW 325iX - Grey - Soon will be black
1986 BMW 325ES - Black
2008 Kawi ZZR600 - Black
1977 Custom Deluxe - Red
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edjack



Joined: 04 Feb 2002
Posts: 3887
Location: San Jose, CA

PostPosted: Sat Aug 09, 2008 9:59 pm    Post subject: Reply with quote

You may need to take it to a dealer, or well-equipped indie, to read the stored codes.
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bimmerjo



Joined: 24 Jun 2006
Posts: 389
Location: Aurora, Mo

PostPosted: Thu Aug 28, 2008 11:30 pm    Post subject: Reply with quote

whats funny is, its not doing it any more... hmm...... oh well, only time will tell what is REALLY going on...
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1988 BMW 635CSi - Black
1988 BMW 325iX - Grey - Soon will be black
1986 BMW 325ES - Black
2008 Kawi ZZR600 - Black
1977 Custom Deluxe - Red
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