2000 Explorer SOHC Poor Idling
(Poor Idling P0101 trouble code)
Well basically I have the same issue as everyone else with poor idling when the vehicle has cooled down. IAC was just replaced a few months ago, so that wasn't the problem. Went to Auto Zone and got the trouble code read.
P0101, Mass Air Flow (MAF) Circuit Range/Performance Problem. The guy at Auto Zone told me it was a leak somewhere and I had to locate it. Could this be directly related to the MAF sensor or just a vacuum leak somewhere? I can definitely hear a whistling sound when I start it up, and decreases in strength as the engine warms up. I have looked and have yet to have found a leak. Any suggestions as where I should start?


