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p0102 mass air sens cir low freq ?????

This is a discussion on p0102 mass air sens cir low freq ????? within the General Help forums, part of the LSx Technical Help Section category; thats the code Im getting. It started all the sudden driving down the interstate. It idles funny sometimes and sputters ...

  1. #1
    Member JRENIGAR's Avatar
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    Angry p0102 mass air sens cir low freq ?????

    thats the code Im getting. It started all the sudden driving down the interstate. It idles funny sometimes and sputters at low rpm when giving moderate throttle. I havent visually looked at the sens in a couple of weeks since I did the fra mod and cleaned the maf with the proper cleaner. Is the maf f-ed or is this not enough info??? BTW, I logged the car with the predator and tha maf freq is 2.32g/s at any rpm or throttle pos.

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    Moderator Cutlass's Avatar
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    Sounds more like a wiring problem...maybe. Here's 2 quick tests you can run.
    Unplug the MAF, turn the key on but don't start the engine. Use a volt meter and check for 12 volts across the pink wire and black wire. Next check for 5 volts across the yellow wire and the black wire.
    Post the results

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    Member JRENIGAR's Avatar
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    thanks, will do...

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    TunedbyFrost.com Tuner Frost's Avatar
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    I would firstly check the ENG SENS fuse under the hood. It provides power to the MAF and O2s. From time to time I have seen it blown for no explainable reason. The car WILL set this code if it's blown.

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    Junior Member damons00maross's Avatar
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    yea my friend had the same problem it was the eng sens fuse.

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    Member JRENIGAR's Avatar
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    thankxxx, will def check that one too!!! Will check tonight after work and report back tomorrow.

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    Member JRENIGAR's Avatar
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    It was the fuse. The headers burned the bank 2 sens 2 hot wire for the o2, and was shorting out. Frost, I wish I had fully read your post first. I didnt see the part about the MAF AND O2's I just thought it was the maf. Got the chiltons manual out and looked over wiring diagrams till I figured it out.

  8. #8
    Junior Member damons00maross's Avatar
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    good job!
    It's nothing my credit card can't fix!

  9. #9
    Member JRENIGAR's Avatar
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    yeah, It only took me till about 3 this morning...

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