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#1
10-03-2010, 01:03 AM
Hummer Authority
Join Date: Dec 2003
Location: New Braunfels/Canyon Lake, TX
Posts: 1,357
Engine revving issue
Been having a problem with my '03 H2 for a little while now. If I run the truck for a bit, shut it off, then restart it again, the engine will rev and then release, rev and release, etc until I put my foot on the gas a little and then it idles smooth. It doesn't do it if the truck has been shut off for a while (ie, overnight), and it doesn't do it when idling after it's been run (ie, at a stoplight). The revs last maybe 1 sec, drop for a sec, rev for a second. Pretty fast and identical in nature, not erratic at all. Any thoughts? And is it something I can fix myself?
Stacy
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2003 yellow Lux, 12" Bulletproof lift, 42" Pitbull Rockers, 20" Ultra Predators, Corsa sport exhaust, painted interior
2004 Cadillac Escalade, white diamond, dual tip chrome exhaust, 20" chrome 9-spoke rims, altezzas - TOTALLED!!!! Replaced with a nondescript 2009 Chevy Tahoe
1970 VW Karmann Ghia, black with a flame job and too many mods to list
#2
10-03-2010, 03:08 AM
Hummer Authority
Join Date: Sep 2003
Location: Canada
Posts: 1,251
Re: Engine revving issue
If i had to make a guess i would think maf sensor. Try unplugging the maf and see if it still does it.
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1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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