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What fails in the MAF? Is it fixable?

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Old Jun 22, 2007 | 11:01 AM
  #1  
Nitsuj86Iroc's Avatar
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From: Mantua, Ohio
Car: 86 Camaro Iroc-Z
Engine: 305ci TPI
Transmission: 700R4
What fails in the MAF? Is it fixable?

86 TPI Camaro, 305, MAF...

All the sudden it took a crap and hardly ran, sorta idled and NO acceleration, it was a weird feeling. I found out that unplugging the MAF sensor fixed it but then my ECM is in limp home. I DO have 12 volts at pin E for the MAF and pin A and B are grounded. So I believe its all a problem with the MAF itself, right?

Well visually the thing looks fine, the tiny wire is not broken. There are however a couple small pieces of debris floating around inside that must have gotten past the screens. Screens are both there BTW.

Is there any hope of fixing a MAF? What is it that typically fails??

Thanks for any help!
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Old Jun 22, 2007 | 12:30 PM
  #2  
battman's Avatar
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From: Huntsville, AL
Car: 87 GTA, 88 GTA, 92 TA, 72 RS SS
Engine: 350, 350, 305, 396
Transmission: T56, 700r4, 700r4, T56
Axle/Gears: 3.42, 3.23, 3.23, 3.73
Re: What fails in the MAF? Is it fixable?

Start with checking/replaceing the MAF burnoff and power relays, they are the most common failure in the MAF circuit.
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Old Jun 22, 2007 | 06:45 PM
  #3  
Nitsuj86Iroc's Avatar
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From: Mantua, Ohio
Car: 86 Camaro Iroc-Z
Engine: 305ci TPI
Transmission: 700R4
Re: What fails in the MAF? Is it fixable?

yea i checked for that, atleast the power is definitly working, because while running there is 12VDC to the E pin at the MAF.

i jsut wonder if anyone has torn down a MAF sensor and knows what is actually failing, and ofcoarse if it is fixable easily
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Old Jun 22, 2007 | 09:07 PM
  #4  
Green89IROC305's Avatar
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Joined: Jun 2006
Posts: 463
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From: Milford, OH
Car: 91 Z28 - using 87 electricals
Engine: 383 HSR EBL
Transmission: 700R4 - Stage 3 Fixed Pressure
Axle/Gears: GM 3.08 POSI
Re: What fails in the MAF? Is it fixable?

my maf was not functioning properly on my 89 305 so i hda it disconnecte4d for a month or 2. what got it working again is when i ran some sea foam through it to clean out my top end. after that it mysteriously staarted to function again. the symptoms of my bad maf was frequent stalling and sputtering on cold starts. although i had no debris.
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Old Jun 23, 2007 | 03:17 PM
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From: Port St Lucie, FL
Re: What fails in the MAF? Is it fixable?

Usually its the broken element wire inside the MAF, no way to fix that.
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Old Jun 23, 2007 | 05:06 PM
  #6  
Nitsuj86Iroc's Avatar
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From: Mantua, Ohio
Car: 86 Camaro Iroc-Z
Engine: 305ci TPI
Transmission: 700R4
Re: What fails in the MAF? Is it fixable?

hmm, thats the thing, that tiny wire APPEARS ok, its not broken or anything. this was something that was all the sudden, worked fine, then boom.

actually i have seafoam in the gas right now, theres no way that could effect the MAF tho... right?

i cannot see anything effecting the MAF except debris and old age. and water, but it was dry.

well ill tear it apart and try something, ill post up if there is any success..

thanks
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