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Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > General H2 Discussion

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  #1  
Old 09-17-2010, 02:30 AM
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pdxrealtor pdxrealtor is offline
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Default Fuel Injector / Throttle Body Service

Is this worth doing at 32k miles? My gas mileage seems to be low and the dealer suggested servicing the throttle body and injectors.

Does that sound right?

Cost at the dealer is $250.00.
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  #2  
Old 09-17-2010, 03:09 AM
Cesardajr Cesardajr is offline
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Wink Re: Fuel Injector / Throttle Body Service

i got a fuel induction service at 46437 miles for $132 at my dealer.
3 step service
1st step helps remove upper engine deposits
2nd step cleans throttle body/air intake area
3rd step fuel additive added to fuel to clean injectors

it ran rough after the service, i took it back and they said it was ok, i took it home and found the maf sensor had all kinds of crap on it, i cleaned it and the h2 ran smooth after that.

as for your h2 at 32k miles, clean the maf sensor, and run 2 cans of seafoam per fill up for 2 fill up's and see how she runs. it should not need a service unless your running crap gas.
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  #3  
Old 09-17-2010, 06:16 AM
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Default Re: Fuel Injector / Throttle Body Service

Thanks.

I always run Chevron or 76 when in a pinch.

Did you notice an improvement in gas mileage?
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Diablo InTune w/DiabLew Tune
Cognito Steering Support
OBX LT Headers
Air Raid Filter w/Tube
External Trans Cooler -Radiator Bypass
Corvette Servo
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Rancho Steering Stabilizer
20" Chrome Fuel Hostage - Cooper ST Maxx
Slotted Rotors/Ceramic pads/Steel Lines
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  #4  
Old 09-17-2010, 01:52 PM
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Default Re: Fuel Injector / Throttle Body Service

Mafs are very sensitive and I've found spraying helps, but replacing them is the only solution if they are acting up. You definitely don't want to physically touch any sensing part of the maf - just spray it.
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Old 09-17-2010, 03:21 PM
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Default Re: Fuel Injector / Throttle Body Service

If memory serves me the maf should be sprayed with electrical parts cleaner correct?

There's no codes and the truck idles fine the gas mileage just seems to be a little low.
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2006 HUMMER H2
MOOG Front End
Diablo InTune w/DiabLew Tune
Cognito Steering Support
OBX LT Headers
Air Raid Filter w/Tube
External Trans Cooler -Radiator Bypass
Corvette Servo
Rancho 9000 Adjustable Shocks-
Rancho Steering Stabilizer
20" Chrome Fuel Hostage - Cooper ST Maxx
Slotted Rotors/Ceramic pads/Steel Lines
Viper Smart Start
iPod/Video Interface
HID Head and Fog Lights
Optima Red Top w/ Priority Start Cut Off Mod
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  #6  
Old 09-17-2010, 06:25 PM
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Default Re: Fuel Injector / Throttle Body Service

CRC makes an actual MAF Cleaner, just spray and let air dry.
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