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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, 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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  #2  
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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Diablo InTune w/DiabLew Tune
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OBX LT Headers
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External Trans Cooler -Radiator Bypass
Corvette Servo
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Slotted Rotors/Ceramic pads/Steel Lines
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Optima Red Top w/ Priority Start Cut Off Mod
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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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  #5  
Old 09-17-2010, 06:37 PM
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Default Re: Fuel Injector / Throttle Body Service

Make sure the igfnition is off and you allow the maf sensor to cool fo at least 15 minutes or you can damage it by rapidly cooling the sensors
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Old 09-17-2010, 08:10 PM
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Default Re: Fuel Injector / Throttle Body Service

Thanks all.

I'm going to order the stuff suggested and give it a go.
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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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iPod/Video Interface
HID Head and Fog Lights
Optima Red Top w/ Priority Start Cut Off Mod
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Old 09-17-2010, 09:39 PM
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Wink Re: Fuel Injector / Throttle Body Service

it made the h2 run smoother, 1mpg regain back to around 13mpg from 12mpg.
i did it as a preventive service since i was close to the 50k mark.
i also use crc maf cleaner every time i clean the air filter every 3 months.
cleaning the maf sensor really helps with keeping the h2 running nice and keeping the mpg's up
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