Thread: low voltage maf code and half working boost gauge?

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  1. #1 low voltage maf code and half working boost gauge? 
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    I recently installed a set of eBay headers on my 00 gtp. That went well for awhile but now the car is giving me low voltage maf code, this is after having replacing it since the other one died. The car idles kinda up and down but not tooo bad. It does die every once in awhile if I let off the gas and hit the brakes. The boost gauge only reads half with my foot to the floor, it's pulling hard but could this be a vacuum leak or something?
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  2. #2 Re: low voltage maf code and half working boost gauge? 
    GrandPrix Junkie CTKGP09's Avatar
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    yes a vacuum leak or a possible wiring issue to the maf
    '04 Chevy Silverado LT 4x4 - intake, headers, full exhaust, zo6 cam, 799 heads, tune, leveled, 33's
    '00 Grand Prix GTP DAYTONA 500 - L36 block, S1X, intercooled, GenV, N*, headers, full exhaust, coilovers, 5 speed swap, stage 3+ clutch
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  3. #3 Re: low voltage maf code and half working boost gauge? 
    Killa Bee Scottydoggs's Avatar
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    check for vac leaks. also check the fuse box for a blown fuse, # 26 iirc. and the wires to the maf, check them for damage.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  4. #4 Re: low voltage maf code and half working boost gauge? 
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    Thanks for the help. Any good way to check if the wires are o.k. still? Like could I use a volt/ohm meter? Or a continuity* tester. I know the fuel rails are a place for a vacuum leak pretty easy. Any other common place?
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  5. #5 Re: low voltage maf code and half working boost gauge? 
    Turbo is the way to go. BillBoost37's Avatar
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    This happened when you installed something. Look at everything you touched.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  6. #6 Re: low voltage maf code and half working boost gauge? 
    Killa Bee Scottydoggs's Avatar
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    follow the plastic hard lines around the engine, they make a loop basically. fpr, under the snout, the bbv, the evap from the TB. all over.

    not sure the volts at the pig tails. there are threads with that info. if you see missing insulation or cracks in the wires, theres no need to check the volts, the wires are bad.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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