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Code 0172 . . .

SDGTP99

SDGTP99

New member
my dummy light popped on. Im running code 0172; rich bank 1. I've checked and double check and I don't have vacuum leaks. I've checked my wires and they are good, maf is relatively new, as is tps. Plan on checking plugs tomoro. May have an small exhaust leak at the Y-collector pipe. What else do I need to check to fix this problem? I'm getting rocker arms and springs installed tomoro and I don't want any problems.
 


My fuel pressure is at 45psi when idle. I beleive thats where its supposed to be but if not thats prob part of the problem.
 
Really? I replaced it a few months ago w a Denso O2. But I think I have a spare so I'll switch it and see if that helps.
 


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