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  • #1

    MAF sensor ?

    Can a dirty MAF cause the raedings from the O2 sensors to go lean.

    I just bought a used one and everything seems to work fine except sometimes when sitting at idle my AFR will go way lean on the wideband and during this time my scanner is showing both my O2 readings staying around 40mv. This only lasts for a few seconds then the O2 readings start moving again and my AFR goes back down to 14.7.
    2002 v6 camaro supercharged with a powerdyne pushing 12PSI, I also have an aluminum driveshaft, headers, high flow CAT, flowmaster exhaust, HP Tuners, AEM wideband, throttle body spacer, PCV bypass, cartech adjustable FMU, timing control module (wich I don't need now with HP Tuners but I am not going to spend the time to take it out), 3.23s with LSD, Spec stage 2 clutch, Exon (I think that is how you spell it) Ground effects, P&P throttle body, and GTP 36# injectors.
    Tags: 200, 2002, afr, back, bought, camaro, clean, computer, dirty, dow, idle, ing, maf, making, moving, seconds, sensors, sho, shot, star, start, start up, tuning, v6 camaro, wideband, work, worth
  • #2
    Originally posted by 2002 v6 camaro charged
    Can a dirty MAF cause the raedings from the O2 sensors to go lean.

    I just bought a used one and everything seems to work fine except sometimes when sitting at idle my AFR will go way lean on the wideband and during this time my scanner is showing both my O2 readings staying around 40mv. This only lasts for a few seconds then the O2 readings start moving again and my AFR goes back down to 14.7.
    I don't think a dirty MAF will cause the O2 sensors to go lean, but a faulty MAF can cause a lean condition which the sensors would report.

    You're probably just seeing the computer making the correction.
    Originally posted by Redd8407
    I WANT NOISE! SPEED! AN ENGINE THAT SHAKES MY INTERNAL ORGANS LIKE THEY GOT PARKINSON'S! I DONT WANT AN ENGINE THAT IS PARTIALLY POWERED BY MY LAPTOP BATTERY!
    Originally posted by Z28ISGR8
    WHY THE F*CK IS THERE A GOAT ON A FERRARI?
    Originally posted by Darren
    I think it is because I take it in and out all the time, the rubber has just stretched out, especially at the bottom where it is really thin. It annoys me more then anything.

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    • #3
      worth a shot to clean it anyways. Tuning it didn't help?
      ------------------------------------------
      2004 GMC Envoy - Tuned, Airraid Intake, rest stock
      2005 Malibu - Stock, anyone have a ecotec factory gm supercharger for me? lol

      5th gen Camaro V6 Forums
      http://www.bowtiev6.com

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      • #4
        What I described there ^ is not at start up, that happens now and then after the car warms up. I have not fixed my start up problems yet, I looked at what was available in the tuner to change but I have not figured out what exactly to change to make it more rich.
        2002 v6 camaro supercharged with a powerdyne pushing 12PSI, I also have an aluminum driveshaft, headers, high flow CAT, flowmaster exhaust, HP Tuners, AEM wideband, throttle body spacer, PCV bypass, cartech adjustable FMU, timing control module (wich I don't need now with HP Tuners but I am not going to spend the time to take it out), 3.23s with LSD, Spec stage 2 clutch, Exon (I think that is how you spell it) Ground effects, P&P throttle body, and GTP 36# injectors.

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