Question about 2003 Chevrolet Suburban 1500
It starts fine when cold. Have to hold it wide open throttle to start it when hot. turns over fine. Runs rough when it starts & stumbles when it's given gas. Sets code po101. Changed MASS air flow but same thing happens.
Basically this means that there is a problem with the Mass Air Flow (MAF) sensor or circuit. The PCM detects that the actual MAF sensor frequency signal is not within a predetermined range of the calculated MAF value for more than 4.0 seconds. I would try cleaning out your MAF sensor with some carb cleaner and reseting the check engine light to see if it comes back on. If it does, get back on here and let us know and we will walk you through some other things you can try. Cleaning it out will be the easiest/cheapest thing for you to try right now. Good luck. Thanks for an honest rating and for using FixYa.
Posted on May 22, 2009
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Posted on Jan 02, 2017
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