I cleaned throttle body and ran fine for one day . Now it cuts out on take off and going up hills its ok now

Asked by Jun 28, 2017 at 03:34 PM about the 1999 GMC Sierra 1500

Question type: Maintenance & Repair

1999 gmc suburban

4 Answers


interesting problem....same as I had with my 1998. Do u have a check engine light on? Go get scanned for free at Auto Zone.....if on (Believe it will show//indicate 0201)


Now did you clean the Mass Air Flow (MAF) sensor .....located within the throttle body, with same cleaner as in throttle body??? that's a no-no, and you may have stunk up the MAF sensor. When you are at AutoZone....there is a specific cleaner for the throttle body.....and a separate cleaner for the MAF Sensor. Read the warning on the spray bottles


I sprayed my 1998 throttle body and got so much Black-Gunk.....had it all soaked with a pile of paper towels underneath the throttle body....I used a can and a half until it was clear//clean. I was safe to not overspray into the MAF. AutoZone tech warned me.


Once you properly clean the MAF Sensor....tell me how the truck works.....you may also be seeing/feeling/noticing that the fuel pump is starting to go....just a hunch...but not sure yet

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