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Mass Air Flow Sensor / Open Loop

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  • Mass Air Flow Sensor / Open Loop

    A couple weeks ago I was under my car checking out a leak in my exhaust and saw one of the o2 sensors was not pluged in so I went to plug it in and there was 2 connectors that it could plug into so I pluged it in the one that I thought was right. Well last week I borrowed a friends scanner to make sure my O2 sensor was pluged in correctly. Hooked up the scanner and sure enough I pluged it into the wrong one. I fixed that and reset the check engine light and it got rid of the o2 code but there is a code for the Skip shift Solenoid, I thought i looked at that and there was a bypass but i guess not so i am gonna get a bypass to fix that.

    So now that problem is fixed I was watching the data on the scanner and the pcm is staying in open loop. I took it for a drive and watching the data and the MAF is reading 0.0 and 0 hz. The pcm is not throwing any codes. So my question is could the MAF be the reason why its staying in open loop and if I need to replace the MAF I might as well upgrade. Ive read that the Z06 MAf is a good replacement is this true and what other suggestions are there. It is a 98 TA WS6 LS1 with a LS6 intake, long tube headers, no cat and 4.10 rear end. All this was done before i bought the car so there might be more upgrades too but not sure. I am pretty sure it has the stock TB, I have heard mixed things about port and polish TB with this setup would that be of any benefit?

    I dont seem to have any driveability problems and I get 23-25 mpg on the HWY. It was showing a couple missfires on #8 but I never felt it missfire. It has stock wires so im gonna get a set of MSD wires and new plugs.

    Thanks for any input
    Christopher
    1998 Pontiac Trans Am LS1, Ram Air, White with custom Ghost Flames, Black Leather Interior, T-Tops, T56 Trans, 4.10 Rear End, Spohn Adjustable Torque Arm, Line Lock, Kooks Headers, Kooks ORY Pipe, SLP Loudmouth II catback, LS6 Intake, K&N Air filter, Centerforce Dual friction Clutch, Lowered and "Conklinized"

    Pioneer D3 HU, Infinity Reference 6.5 componets. Kenwood KAC-9104 1800w AMP, Kenwood KAC-8404 600w AMP, Subthump Stealth enclosure, PPI PRO104 2000 watt DVC Sub

    sigpic

  • #2
    dont get msd. stock are better.
    something is up if your only getting 23mpg

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    • #3
      What larry said about MSD, my little B has an MSD distributor in his fox body, lately it's enjoyed not working correctly.
      Gone but not forgotten: 1986 Chevrolet Camaro IROC-Z

      "You shall ride eternal. Shiny and chrome."

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      • #4
        That MAF should read even if it's not turned on in the PCM.



        VicePresident of West Michigan Firebird Club
        A.K.A The Maverick
        http://www.cardomain.com/ride/660128/1
        93 TA Currently Under Construction AGAIN
        2007 2500 Chevy Silverado Crew Cab w/ 6.0L & 3.73's

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        • #5
          Sounds like the MAF isn't plugged in but I would think it'd throw a code.
          - Brian Meissen
          Owner, MiFBody.com
          Administrator, LTxTech.com


          1994 Camaro LT1 Transplant - 357ci LT1, cammed, stalled, and driven.
          2022 Camaro LT1 - "Cherry Bomb 2"
          Michigan FBody Meet & Greet Car Show 2022
          June 4th, 2022 - 9am to 3pm!!!
          The HUB Stadium, Auburn Hills, MI

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          • #6
            Stick with a stock maf unless you have a tuner to dial the aftermarket one in. Stock is good for 500hp and slp and others have caused lean codes to be thrown. The MSD 8.5mm red wires are fine on an LS1, they are only 6 inches long!
            sigpicMODS: SLP DUAL/DUAL EXHAUST, 160 STAT, MTI LID, SHANER S3 T.B., SMOOTH BELLOWS, DESCREENED MAF, TUNNEL BRACE, UMI SFC & PHB, STRANO SWAY BARS, DRILLED/SLOTTED ROTORS, WHISTLER LIGHTS, BLACK BILLET GRILLE w/69'SS EMBLEM, BLACK SMOOTHED TAIL PANEL w/69'SS EMBLEM, BLACK SS HOOD INSERT, INTIMIDATOR SS WHEELS.

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            • #7
              way to many have had issues with the msd wires. including me
              if you want red get ls2 wires

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              • #8
                23 is on the low end. ive gotten as high as 28. but i have a 4.10 rear end so i expected it to be lower than 23 when i bought the car. If it is staying in open loop i would expect it to get lower mpg too. I checked the plug its pluged in. i guess i will replace it with oe. I was thinking of getting it tuned i dont think it was ever tuned after the ls6 intake was installed.
                1998 Pontiac Trans Am LS1, Ram Air, White with custom Ghost Flames, Black Leather Interior, T-Tops, T56 Trans, 4.10 Rear End, Spohn Adjustable Torque Arm, Line Lock, Kooks Headers, Kooks ORY Pipe, SLP Loudmouth II catback, LS6 Intake, K&N Air filter, Centerforce Dual friction Clutch, Lowered and "Conklinized"

                Pioneer D3 HU, Infinity Reference 6.5 componets. Kenwood KAC-9104 1800w AMP, Kenwood KAC-8404 600w AMP, Subthump Stealth enclosure, PPI PRO104 2000 watt DVC Sub

                sigpic

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