Throttle cable | FerrariChat

Throttle cable

Discussion in '308/328' started by bquan94545, Mar 7, 2011.

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  1. bquan94545

    bquan94545 Karting

    Aug 8, 2010
    111
    Pinole, ca
    Full Name:
    bruce quan
    Hi,

    I have a 84 Mondial QV Cabriolet. I took it for a ride today and it ran great except
    the accelerator had certain points it would stick. I suspect the throttle cable has
    never been changed so I bought one off of EBAY.

    Can anyone tell me how hard it is to replace that cable. or does anyone have any
    ideas on the approach I should use.

    Thanks

    bruce
     
  2. viper_driver

    viper_driver Formula Junior

    Jan 1, 2009
    978
    Vegas
    Full Name:
    Jason
    I just did one on a 308. I can talk you through it, but I'm not sure if it's similar.
     
  3. bquan94545

    bquan94545 Karting

    Aug 8, 2010
    111
    Pinole, ca
    Full Name:
    bruce quan
    Viper driver

    Well you got me wondering too. I know electrically they are similar
    but mechanically I don't know either. I know the part numbers are
    different which tells me the layout should be different.

    Which end did you start from? the engine or the accelerator pedal?
    Did you need any special tools.

    thanks

    bruce
     
  4. Jdubbya

    Jdubbya The $10 Trillion Man
    Silver Subscribed

    Dec 28, 2003
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    John
    That's one of my next projects on my '78 308. Any tips or tricks to make it easier?
     
  5. viper_driver

    viper_driver Formula Junior

    Jan 1, 2009
    978
    Vegas
    Full Name:
    Jason
    #5 viper_driver, Mar 8, 2011
    Last edited by a moderator: Sep 7, 2017
    I doubt a sticking accelerator will be fixed by the cable, but who knows. Here's why mine had to be replaced (see pics). The pedal was sticking as well, that was due to the actual pedal having some problems and the throttle body too.

    To remove it, start at the motor end. Remove the small cotter pin at the tip of the ball joint. then you can unscrew the end of the cap. now you can remove the ball joint from the throttle body.

    Now go to the pedal end. I'd just completely remove the pedal so you can take a look at the whole thing and see if it's got any other problems. you'll have to remove the center console forward half and the plastic pedal cover first. The pedal is held by two nuts. Not required to remove the pedal, but I found that mine was bent and needed some added support welded on.

    next, remove the clevis from the pedal so that the entire cable can rotate freely. Take the clevis and nut completely off at the pedal end so you can pull the cable through from the back.

    Back to the motor end, you'll have to unscrew the nut that's tight against the inside of the intake manifold. It'll be hard to reach in there to the back side. once it's loose, you can unscrew the threaded part of the cable out of the manifold. The manifold has threads tapped into it where the cable passes through.

    Take note of how the cable is routed through both the front and rear manifolds. you should now be able to pull it completely out from the engine side. It shouldn't bind on anything. if so, go back to the front and see what's catching on the outer tube.

    once it's out, reverse for the new cable. when you feed the cable through at the motor side, there are two tubes that it passes through. Once it's through the first half, you'll have to climb under the car and feed it into the second half where it goes into the center console.

    I tied a string to my old one and pulled the string through so I could reroute the new cable, but I don't think that did much of anything as it was easy to route the new cable without it.

    good luck.
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  6. Jdubbya

    Jdubbya The $10 Trillion Man
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    Dec 28, 2003
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    John
    I'll have to take a look and see how similar mine is being a carb car. I didn't think to ask what year yours was but sounds similar from what I've looked at so far.

    Thanks for the tips!
     
  7. st@ven

    st@ven F1 Rookie

    Aug 4, 2008
    3,313
    Germany
    Full Name:
    Steven
    I'm about to replace mine, I've trhe new one already here so please if there are any to-knows please fill me in.
     
  8. bquan94545

    bquan94545 Karting

    Aug 8, 2010
    111
    Pinole, ca
    Full Name:
    bruce quan
    viper driver,

    Thanks for the information. The disconnecting seems straight forward, but using a
    string to pull the new one through is great.

    The cable should be here by the weekend. I can't wait to get my problem fixed.

    thanks

    bruce
     
  9. bquan94545

    bquan94545 Karting

    Aug 8, 2010
    111
    Pinole, ca
    Full Name:
    bruce quan
    Viper_driver

    did you lube cable or does it come prelubes ini the housing?
    If you had to do it?, got any tips on that

    thanks again

    bruce
     
  10. viper_driver

    viper_driver Formula Junior

    Jan 1, 2009
    978
    Vegas
    Full Name:
    Jason
    no need to lube the cable. the tube that it goes into isn't a tight fit at all. you'll see why the string isn't necessary when you do this. there are two tubes. one along the firewall and one inside the center console. both are pretty straight runs and easy to access the ends so the string didn't do much to help, but have at it if you want to use one.
     
  11. Sean F.

    Sean F. F1 Rookie

    Feb 4, 2003
    3,066
    Kansas
    Full Name:
    Sean F
    I did my clutch cable and IIRC, there are round rouber grommet like fittings under the chassis that reveal the clutch and gas cables making routing/intalling easier.

    Also, a lift helps A LOT!
     

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