Quote:
Originally Posted by 12voltsolar
I just had my MAF replaced and my FE went down?
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MAF needs "cleaned" much more often than it needs "replaced."
Changing MAF implies a reset of the ECU. Typically an ECU will take a few miles (eg 150 mile) to fully recalibrate itself. If you're FE drop is based on a scan-guage or similar reading, give the ECU a little time to tune itself in.
If you've already gone 150 miles or more and the FE is still down more than colder weather would account for, you might want to double check that the mechanic didn't introduce a spec of lint or crude on the new MAF when he installed it.