Quote:
Originally Posted by green03
I have had the codes read twice. Advance Auto read them as P0171, P0174 and turned off the CEL. Two days later it came back on so I had AutoZone read them. Same codes showed and they also turned off the CEL. After it came back on I cleaned the MAF with electrical contact cleaner and reinstalled, disconnecting the battery before removing it. The CEL light was off for a time because I had disconnected the battery, but came on again a couple days later. This time I replaced the MAF after disconnecting the battery. The light is now out, but the rough idle continues and I expect the light to come back on at any time.
Would I not get codes against the O2 sensors if they were bad?
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"rough idle continues" may be the key. I don't believe a bad MAF causes rough idle. most likely vacuum leak in the intake manifold.
I'm with Schwank and Foydawg, try looking for vacuum leak before more replacing part$$