Not a Technician, retired electrical engineer / advisory systems analyst. Living off computers all my life, and cars as a hobby. Starter studying fuel injection way back in the 80's when I picked up an old '70's Opel Manta with a very early Bosch fuel injection system. Not so funny first experience with MAS story.. Got stuck one night 2 AM, 5*F out, blowing wind and snowing, thumbed a ride on an 18 wheeler (he felt sorry for me) to an all night diner. The Opel just backfired and died, would not run.. Went back next day, wife towed me home, the Air Flow Sensor, a flapper door with a variable resistor attached blew a hole in the door (did not call them MAS in those days).
As far as your problem, you did three things 1- physically re-seated the MAS connector, 2- vibrated/moved the MAS, and 3- reset the PCM . There's a chance problem may be fixed, I'd wait a week and see how things look before spending $60-70 on a new sensor.
Texan, the 8 cyl's have the heated wire MAS setup that I have always seen on GM's and they can get dirty and give incorrect readings. The I6 4200 MAS looks like a small laptop hard drive, just a metal box with a few ports in it. Not sure how it technically works, I got some more reading to do to see if dirt can be a problem with that new design.
As far as your problem, you did three things 1- physically re-seated the MAS connector, 2- vibrated/moved the MAS, and 3- reset the PCM . There's a chance problem may be fixed, I'd wait a week and see how things look before spending $60-70 on a new sensor.
Texan, the 8 cyl's have the heated wire MAS setup that I have always seen on GM's and they can get dirty and give incorrect readings. The I6 4200 MAS looks like a small laptop hard drive, just a metal box with a few ports in it. Not sure how it technically works, I got some more reading to do to see if dirt can be a problem with that new design.
