Thread: maf

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  1. #1 maf 
    SE Level Member ssiebor14's Avatar
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    How do you know if an maf sensor is bad? And will an aftermarket intake cause this. I have low rpms when idle. Rich gas. Sputters. Wants to stall but doesn't.
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  2. #2 Re: maf 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Does it run better if you unplug the MAF and restart the car?


    Have you done anything tune up related to correct this problem?? Any check engine light codes?

    SMGPFC Member #1
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  3. #3 Re: maf 
    Killa Bee Scottydoggs's Avatar
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    bad sensors will set a code 99% of the time. kinda sounds like a vac leak maybe. try spraying some carb cleaner around the vac lines, see if the idle jumps up, if so the last place you sprayed is the problem area.

    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: maf 
    SE Level Member ssiebor14's Avatar
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    I've unplugged it when running and it didn't seem any different. I haven't tried that Scotty. I will give it a go tomorrow. Could that also explain why my boost gauge won't go all the way up like it's supposed to?
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  5. #5 Re: maf 
    Killa Bee Scottydoggs's Avatar
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    you un plug the maf with the car off, then start it. if it runs better the maf could be the problem.


    a vac leak would show a loss in boost. maybe the map sensor is leaking or the line to it from the port under the snout.

    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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  6. #6 Re: maf 
    SE Level Member ssiebor14's Avatar
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    Under the snout. The vac lines a small black tubes right? If so there's a 3 piece connector under the snout. If I'm correct.
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  7. #7 Re: maf 
    Killa Bee Scottydoggs's Avatar
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    this is how i ran the new vac line and t's. i reused the factory line to the map sensor, the plastic line fit into the new vac line on the the T.


    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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  8. #8 Re: maf 
    SE Level Member ssiebor14's Avatar
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    So the map sensor is below the snout?
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  9. #9 maf 
    Turbo is the way to go. REDCRAPGP's Avatar
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    Maf sensor is between the TB and intake.

    Map sensor is behind the supercharger should be attached to a bracket. Follow the vacuum line in the back and you should spot it.

    Underneath the snout is your vacuum lines have someone start the car and monitor the rpms while you spray carb cleaner around the vacuum lines. If the rpms jump then you found your leak. Also spray around the lim to spot any potential leaks.
    Squirrels are my engine. I need a Ford Regal
    04 Comp G.
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  10. #10 Re: maf 
    SE Level Member ssiebor14's Avatar
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    Okay so nothing there. I just did that.
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  11. #11 Re: maf 
    SE Level Member ssiebor14's Avatar
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    Unplugged maf and it ran shiitier and wanted to stall
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