92 Buick Century 3.3L -- Cranks but no start on Hot Soak...

Discussion in 'Domestics' started by Jason_SXT, May 21, 2007.

  1. Jason_SXT

    Jason_SXT Always in search of a challenge...

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    Diagnosing Cranks but won't start after a hot soak...

    Pulled codes with Tech II & found:
    Current Codes...
    0026-QDM
    0027-2nd Gear switch
    0028-3rd Gear switch
    History Codes...
    0039-TCC
    0048-Misfire Detected

    Checked for spark after hot soak and found none... Checked for fuel injector signal with noid light & found none...

    If I let the car sit for about an hour to cool off, it will start just fine & I have spark & fuel injector pulse...

    I watched RPM signal during KOEO, cranking, & started (didn't matter whether hot soak or not... They read the same either way)...
    RPMs read 20 RPMs during KOEO, RPMs read 20 RPMs during cranking, & RPMs read normal RPMs while engine running...

    Guessing something to either do with the Quad Driver or Crank sensor...

    Anyone got any suggestions?
     
  2. Gus

    Gus wrench

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    Could be the crank sensor OR the ignition module.....those other codes have nothing to do with spark....more likely a PCM problem, especially for that year vehicle.....
     
  3. Transman

    Transman Receptionist & Complaint Dept.

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    Just a add here, if you do need to replace the crank sensor, and you probably will....Replace it with OEM only. Actually it's probably cheaper too at the dealer. The last one I replaced was. Transman
     
  4. chuckmullin

    chuckmullin Newbie

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    I'm getting the same problem with my '92 century custom,it will run for a while then stall out of nowhere, driving down the road or sitting still, but a guy told me that my code was 22 and i'm not sure what that code means, does anyone know how i can find out without actually having someone test it and paying for it. All the guy did was stick a key in the plug and count the blinks and he got 22 and told me it was the mass air flow sensor. what do you guys think?
     
  5. Gus

    Gus wrench

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    Chris, you should start your own topic....code 22 is a TPS code....
     

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