Check Engine light
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1999 E320 / 1988 BMW 635Csi / 1987 Porsche 911 TL Cab Triple Black
Check Engine light
A few months ago the check engine light came on, I unplug the battery and it's gone, now it's came back and few hour later it's gone, this morning the CEL came on again.
Car ran fine and did not notice any lost of performance.
Can some one share some advise.
Car is 1999 E320 with 69K mile
TIA
Car ran fine and did not notice any lost of performance.
Can some one share some advise.
Car is 1999 E320 with 69K mile
TIA
Thread Starter
Almost a Member!
Joined: Apr 2004
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1999 E320 / 1988 BMW 635Csi / 1987 Porsche 911 TL Cab Triple Black
Check egine on/off by itself
Originally Posted by MBWorld1
might be your gas cap.
May want to buy a new one.
May want to buy a new one.
The danm CEL just disappear by itself aagin, I will check the gas cap tonight.
Thanks
Thread Starter
Almost a Member!
Joined: Apr 2004
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1999 E320 / 1988 BMW 635Csi / 1987 Porsche 911 TL Cab Triple Black
does autozone still reading the code for free ?. how hard to replace O2 sensors, I believe there are 2 required in the car, can they telll which one is bad.
Assume if the O2 is bad, how would you notice the performance of the car ?
TIA
Assume if the O2 is bad, how would you notice the performance of the car ?
TIA
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Joined: Apr 2003
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From: CT and FL
SL500 E320 ML350
I'm guessing it's a sensor also. I've had this problem before on older MBs. It does not effect drivability or performance to any great extent. I would have it checked out by your dealer/service though, not an emergency. 
