running lean?

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fred79

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I was delivering with my sho today and running on the highway in third gear at near WOT I got a check engine light it stayed on for about a min. and then went off. I ran the codes and got a 172, 176, 211,542. I am pretty sure that the 211 is left over from when I changed my cps and the 542 I think is from stalling on a steep hill today from a start. so I think the lean code is what caused the CEL. now I was try to listen for a vacuum leak and the intake noise sems high but that might just be me. haven't had a CEL from anything since I changed CPS. I will try to clear it and keep watching. I have noticed my engine losing power between 3-4000 rpm but I was attributing this to the crap clutch job my local shop did and it usually reves above and just loses momentum, but I have also noticed the engine holding rpms and just stumbling. I also have a plug well oil leak so I figured it was oil in the cylindar. but with a lean code that wouldn't make sence, also I have noticed a gas smell from the exhaust at times. so the car has me theroughly confused. I am going to try a KOER compression test.
 

DHMag

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looks to me like your O2 sensors are bad, according to the codes you listed. id say reset the codes then pull em again.
 

fred79

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I reset and pulled again and got nothing so I will keep driving and hope if there is a problem it willl show it self again. the balance test proved ok.
 

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