Help with loose throttle cable on '83 QV Euro | FerrariChat
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Help with loose throttle cable on '83 QV Euro

Discussion in '308/328' started by shaundarbie, Dec 9, 2013.

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  1. shaundarbie

    shaundarbie Rookie

    Nov 30, 2011
    33
    Twin Cities, MN
    #1 shaundarbie, Dec 9, 2013
    I'm not sure exactly how this happened. Basically, the throttle cable is so loose that you can press the gas pedal all the way and not actually open the throttle. The gas pedal kind of just flops around. The cable isn't broken--I can pull on one side of the cable and the other side will still react. But there's way too much slack in the cable.

    This is what you see initially as you look at the pedal:

    [​IMG]

    Note the slack in the cable I can grab with my fingers:

    [​IMG]

    To take out the slack with the pedal, you have to push the pedal all the way down, which is easily done by hand w/o resistance:

    [​IMG]

    And here's a shot of me taking out the slack by hand at the throttle arm:

    [​IMG]

    Any ideas for me? TIA!
     
  2. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,551
    San Carlos, CA
    Full Name:
    Mitchell Le
    #2 yelcab, Dec 9, 2013
    The problem is not at either end, it must be somewhere in the middle. The outer sleeve of the cable must be attached firmly in place in the tubes. There is a tension adjust nut right under the air plenum. If any of that has come out, or the outer sleeve is broken, then you will have that floppy cable ends.
     
  3. GrayTA

    GrayTA F1 World Champ
    Owner Rossa Subscribed

    Jun 25, 2006
    15,130
    Deep South
    Full Name:
    PDG
    #3 GrayTA, Dec 9, 2013
    Same thing happened to my US QV about two years ago. It was a relatively simple fix with a new cable. I think, over time, the cable just stretched some.




    PDG
     
  4. GrayTA

    GrayTA F1 World Champ
    Owner Rossa Subscribed

    Jun 25, 2006
    15,130
    Deep South
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    PDG
    #4 GrayTA, Dec 9, 2013
    To add - you CAN adjust the tension on the current cable, but not a whole lot, maybe 1/4 inch or so.




    PDG
     
  5. shaundarbie

    shaundarbie Rookie

    Nov 30, 2011
    33
    Twin Cities, MN
    #5 shaundarbie, Dec 10, 2013
    Thanks guys, I'll look into that.
     
  6. shaundarbie

    shaundarbie Rookie

    Nov 30, 2011
    33
    Twin Cities, MN
    #6 shaundarbie, May 22, 2014
    Update on this, I replaced the cable and all was well again. But after awhile the gas pedal became extremely difficult to push. Arrrggghhh. What am I missing here?
     
  7. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,551
    San Carlos, CA
    Full Name:
    Mitchell Le
    #7 yelcab, May 22, 2014
    You need to check your work to see if things have shifted?

    Second, you need to check and lube the throttle plate thingy
     
  8. shaundarbie

    shaundarbie Rookie

    Nov 30, 2011
    33
    Twin Cities, MN
    #8 shaundarbie, May 22, 2014
    Throttle plate moves easily, has to be lube issue or maybe the sleeve is fighting with the cable.
     
  9. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,551
    San Carlos, CA
    Full Name:
    Mitchell Le
    #9 yelcab, May 22, 2014
    Don't assume the throttle plate moves so it is smooth. You need to disconnect all cable to the throttle assembly, remove the spring, bushing and lube them. Then put them back.
     

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