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1988 300E, CA Emissions, Ck Engine Light

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Old 08-19-2018, 11:01 AM
Jim Z's Avatar
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Default 1988 300E, CA Emissions, Ck Engine Light

I have an '88 300E inline 6cyl with California emissions that I can't resolve a check-engine light.
Under the hood, next to battery, there's an array of diagnostic LED's. #4 is constantly lit.
If I press the button next to it, #4 will go out, flash a few times, then back to steady on.

I've replaced the Air-Flow Sensor and adjusted it properly.
Car runs great, just can't get rid of the check-engine light!
Thanks!
Jim
 
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