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07-19-2011, 12:37 PM
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Hummer Veteran
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Join Date: Oct 2009
Location: Washington
Posts: 147
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Re: Surging Between 45-50 MPH
Throttle body dirty, Butterfly getting stuck open. Just a guess like the others.
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07-19-2011, 01:18 PM
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Hummer Professional
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Join Date: Nov 2009
Location: Windermere, FL
Posts: 297
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Re: Surging Between 45-50 MPH
I appreciate the help everyone.
The problem we're having diagnosing it is that it's intermitent. I can't get it to happen when I'm at the dealer...of course. Like I stated earler, the dealer did the injector cleaning and all that crap. I'll ask if they scrubbed out the throttle body.
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White 2005 SUT, Lifted 7.5" via Fabtech/custom work, Fabtech Dirt Logic 2.25 shocks, 40x15.5x22 Toyo's, black 22" Fuel wheels, 4.88 gears, Dynatech long tube headers, Magnaflow exhaust, Air-raid intake, Superchips programmer, Edlebrock panhard bar, Cognito UCA's, Kryptonite tie rods, Cognito pitman/idlar arm gussets, Hotchkis swaybars and trailing arms, Amp Research steps, E&G fender flares, PIAA SMR's, smoked roof lights (bulbs removed), black suede headliner, 13" JL's under seat
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07-22-2011, 02:41 AM
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Hummer Authority
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Join Date: Dec 2003
Location: New Braunfels/Canyon Lake, TX
Posts: 1,357
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Re: Surging Between 45-50 MPH
Please post if you find a fix. Mine does this at idle - not every time, just every now and then. Usually after I run it for a bit, shut it off, then restart 30-60 mins later. It will surge until I give it gas, then it's fine. Can't duplicate it at the dealer either!
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
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