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Discussion Starter #1
ok so last year my car, 97 auto lx, was having a misfire issue. set of wires and 2 sets of plugs fixed that. cracked the exhaust in front of the #2 O2 sensor but have it patched up fairly decent. in the last week shes started running really bad at idle and threw a code last night. its a P1137 HO2S12 sensor indicates lean code. the sensors at idle read as follows:
O2S11: 138-950
O2S12: consistently read 49-52

Any ideas y'all?
 

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Just that one code, no accompanied misfire? Maybe the exhaust leak you sealed has opened back up. Have you checked the FPR lately?
 

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Discussion Starter #3
yea just that one code. i can check it again soon as i get my buddys scanner again. whats wierd is it was fine the whole time the pipe was split open and a month after i patched it.
 
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