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Re: Check engine light, very rich or very lean 200 91

posted by  someone claiming to be chris herbst on  Thu Nov 30 06:42 CST 2000 [RELATED]

I had the same codes show up on both my 90 and 91. I fixed them all by cleaning the connections at the air mass meter and especially at the oxygen sensor connection on the firewall, which had gotten corroded and was malfunctioning. Not that this is a guaranteed fix, but I just fixed a few codes on the 90 by re-cleaning the AMM connections. Little things that go a long way, I suppose.





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