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Old 07-23-2001, 01:22 PM
ke6dcj ke6dcj is offline
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Join Date: Apr 1999
Posts: 2,632
Most but *not* all CHECK ENGINE flags are emission-related.

A failing/old gas-cap, or even screwing it on cock-eyed can cause a CHECK ENGINE light on these cars.

A failing fuel-filter was causing a lean-condition on mine (C36), so at 80K miles, if you don't know when the fuel-filter or gas-cap was replaced, I'd change them out now and use this as your baseline. O2-sensors (you have two of them) should IMHO also be changed out every 100K miles.

Best of luck,

:-) neil
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