On starting my Hummer H3 it somtime won't start then it will start and reves up real high then idels to a stop.Hummer problems starting and ideling?Clean the throttle body, clean the MAF, could be Idle air control motor? a good number of things could cause this and it is best to take your vehicle to your GM dealership or other trusted mechanic.Hummer problems starting and ideling?DO NOT ADJUST THE CARB!!!! No carb on it.
Check your air cleaner duct %26amp; make sure everything is attached properly %26amp; no gaps.
Was anything off prior to the idling issue????? If so, recheck to make sure it was installed back on properly. I know these newer cars will not start if there is an gap in the air filter duct after the MAF sensor.Hummer problems starting and ideling?take it to a mechanic and have them adjust your crab
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