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Could someone please explain this to me? MAF Problem.

This is a discussion on Could someone please explain this to me? MAF Problem. within the LT1 forums, part of the Vehicle Specific category; When I went to go look at my 97 LT1 TA, the engine light was on. I asked him has ...

  1. #1
    Junior Member Hollo's Avatar
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    Could someone please explain this to me? MAF Problem.

    When I went to go look at my 97 LT1 TA, the engine light was on. I asked him has he tried to fix it, and he said he has done mostly everything except the MAF which would be installed the following weekend. He contacted me that weekend and said the MAF had been replaced and the SES light went off. DING!

    About a week later, I was leaving work, got on the throttle a little bit and i felt a slight sputter for 1/2 sec, the SES light came on, and then never had any more sputters after that. Went to the local Advanced Auto Parts to have the code scanned, and it was a MAF/Vacuum code. He tried erasing the code but it did nothing.

    Yesterday, I decided to take a look at my sensors, intake, MAF, and TB. I noticed I did not completely seat my SLP intake tight enough into the MAF, I thought it was simple. I cleaned my throttle body, and check and cleaned the intake sensors, and reinstalled all the components. I turned the car back on, and the SES light was still on. We decided to clear the code, which we did and the light went off. WOOT. Immediately after the light going off, I went for a drive. I didn't get on the throttle too much but it felt more torquey at lower RPMs, it seemed to drive much stronger. Success.

    Well, later that day I was driving around and decided to drop it WOT. I feel the same sputter as before, but it seemed to be the worst in 2nd gear WOT. Well after a few attempts at WOT, with it sputtering, the SES light came back on again. It immediately did not feel as strong at lower RPMs, but would never sputter again at WOT.

    What is wrong here?

  2. #2
    Member jasonisdn's Avatar
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    turn your maf. the plug should be straight up. if it is or isn't just turn it 1/4 turns and see if it still does it. my maf was reading funny untill we turned it a 1/4 turn. it cleared right up. my buddies turbo mustang was running really rich. he swapped all kinds of electronics that effected the fuel ratio (he has a wide band setup). he then sent off his maf and had it checked. it came back perfect. someone told him to 1/4 turn his maf. well needless to say it stopped running rich. i know it makes pretty much no sense but it worked for both of us on the issues we had. it's free and only takes a few seconds to try, so what reason would you have not to try it.

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    Junior Member Hollo's Avatar
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    Nope it did not work. I am seeing P0100 code, and i saw P0102 for the first time today also. I also disconnected the sensor and drove, and it would not sputter.

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    Member jasonisdn's Avatar
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    ok have you tried cleaning it?
    P0100 Mass Air Flow (MAF) insufficient signal activity
    P0102 Mass Air Flow (MAF) sensor circuit low frequency

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    Junior Member Hollo's Avatar
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    I have just wiped off loose dirt.. Are you saying electronic parts cleaner?

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    Senior Member 5.0THIS's Avatar
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    Quote Originally Posted by Hollo View Post
    I have just wiped off loose dirt.. Are you saying electronic parts cleaner?

    yes, spray off the sensor and let it air dry. dont touch it.

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    Member jasonisdn's Avatar
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    Quote Originally Posted by 5.0THIS View Post
    yes, spray off the sensor and let it air dry. dont touch it.
    yep thats what i was talking about

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    Member jasonisdn's Avatar
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    oh yeah and for 9/11 and all of our troops

  9. #9
    Junior Member Hollo's Avatar
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    I have not cleaned it yet, I do not have any electronics cleaner. But i just replaced the PCV cracked ass hose with a good elbow, and no luck after trying to erase the code.

    I also tested the wires, the 5v line feeds 5.00-5.01v, and the 12v line feeds 11.67-11.68

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