NO power/ acceleration with blinking CEL

Discussion in 'General Motoring' started by Mad E Moe, Sep 24, 2006.

  1. Mad E Moe

    Mad E Moe Guest

    Ok for the past several days I've been having no power/accel issues
    with my 01 Elantra . I've had the codes read at AutoZones AND the
    dealer but no error codes are found . I've replaced the TPS 3 times ,
    replaced the fuel filter , replaced plugs and wires ,checked the
    timing and timing belt . So anyone out have a clue or SWAG to what
    may be going on ?
     
    Mad E Moe, Sep 24, 2006
    #1
  2. Mad E Moe

    cableguy3 Guest

    So are you saying the dealership cannot find the problem? Did they only
    check for codes or give your motor a good going over?

    I had this same issue with a 97 Ford that I owned many years ago and the
    dealership tried unsuccessfully to find the problem on two separate
    occassions. They finally hooked up a data logger to my OBDII port so they
    could "see" it happen as I was driving over a 1-2 week period. Not sure if
    Hyundai has such a device but I would think they may. Basically, when ever
    it happend while I was driving I would press a red button and it would log
    30 sec back in time and 5 minutes moving forward so you could see exactly
    what was going on.

    Ended up being a bad O2 sensor that had gotten "water logged". Once
    replaced, everything was back to normal and I was a very happy camper.
    Not sure if this applies here but it sounds like your looking to turn over
    every rock you can for a possible solution.
     
    cableguy3, Sep 24, 2006
    #2
  3. Mad E Moe

    Mad E Moe Guest

    Can't drive the car , I would risk ausing severe damage to the
    catalytic converter and engine if I did so that option is out .
    Apparently finding no codes is not an abnormal thing .
     
    Mad E Moe, Sep 25, 2006
    #3
  4. Mad E Moe

    hyundaitech Guest

    If your check engine lamp is flashing, there should be at least one trouble
    code. The flashing lamp indicates a misfire. Even if there were no code,
    the dealer (or any other competent shop) should be able to locate the
    cause of a misfire. Misfires could be repaired prior to computerized fuel
    systems. Certainly, they can be found and repaired using the same
    procedures today.
     
    hyundaitech, Sep 25, 2006
    #4
  5. It may one of the coil packs. Check the connections to make sure they're
    clean.
     
    Brian Nystrom, Sep 25, 2006
    #5
  6. Mad E Moe

    Mad E Moe Guest

    Thats the FIRST thing I did when i had this problem , went over every
    connection I could see , Had the codes read TWICE , once at Autozone
    then at the dealer . The first time I had a similiar problem it was a
    burnt through spark plug wire . Right now I'm trying to figure out if
    the timing belt could be out in a way I can't see , but I've pulled
    the covers and everything lines up . And also it only misses under
    load , with the car in out of gear the engine revs up fine so Brian
    may be closer to the truth of the matter . I guess I'm going to hit up
    the Hmaservice website and see if I can find the resistive values on
    the coil and check them out ...(Runs out the door to pull the coil
    pack)
     
    Mad E Moe, Sep 25, 2006
    #6
  7. Mad E Moe

    sqdancerLynn Guest

    Do a simple vacuum test If the vacuum at idle stays steady around 18 " it's
    OK if it drops way down it indicates a clogged converter or muffler
    Unbolt the ex pipe & run it briefly if the power is back you know it is
    the problem
     
    sqdancerLynn, Sep 28, 2006
    #7
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