'85 Mondial Cab--Throttle cable replacement-How To? | FerrariChat
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'85 Mondial Cab--Throttle cable replacement-How To?

Discussion in 'Mondial' started by Geoman54, Jun 18, 2009.

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  1. Geoman54

    Geoman54 Karting

    Jun 12, 2007
    50
    Northern California
    Full Name:
    Michael McLaughlin
    #1 Geoman54, Jun 18, 2009
    I just received the new cable today, and so I have the following question for those of you having gone through the replacement procedure:


    Total cable assy replacement--- engine throttle body to the foot box/pedal. Can I do this all from up top (maybe by just removing the center console and the interior firewall access panel) -- or do I have to get the car up in the air to gain access to the tunnel the cable runs through, from the bottom?

    Thanks in advance,
    Michael
     
  2. birddog

    birddog Formula Junior

    Jun 24, 2006
    415
    Illinois
    Full Name:
    Ed
    #2 birddog, Jun 18, 2009
    I was thinking of doing a throttle cable replacement as well as it appears mine has stretched over time. Maybe someone on here can correct me if this wouldn't work, but I was just going to replace it like you'd pull wire through conduit. Secure the throttle body end of the old cable to the new cable, then pull the old cable through the footwell until the end with the new cable was through as well. Disconnect your cable connection, and then screw on both ends of the new cable and you're in business. Now whether or not some sort of lubricant should be used or if this might cause fraying or any other problems I don't know - I'll leave that up to the more knowledgeable on here. This was just an idea...
     
  3. theunissenguido

    theunissenguido F1 Rookie
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    Jan 21, 2004
    2,668
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    Guido
    #3 theunissenguido, Jun 19, 2009
    Micheal can you take some picture of the 2 ends of this cable. To find out what direction this cable has go ?

    I believe the cable has to go in from pedal side direction to trothle.

    Guido
     
  4. Geoman54

    Geoman54 Karting

    Jun 12, 2007
    50
    Northern California
    Full Name:
    Michael McLaughlin
    #4 Geoman54, Jun 24, 2009
    Okay, so no pics, but here is what I found out by completing the changing out of the throttle cable on my '85 Mondial Cab. First, the cable must go in from the firewall side-to-the pedal box. There is a "guide tube" that runs vertical on the firewall. However-- it does not have a curved section at the bottom of it to match up with the horizontal guide tube that is inside of the tunnel between the seats.

    So-- you have to have the car in the air, and remove that steel panel that runs the full width of the car. Then-- you can feed the cable housing into the horizontal steel guide tube.

    Make sure you tie-wrap the new cable housing to the insulation around the cooling system tubes, so it can't rub against the transmission shift rod that is close by.

    Next challenge --- the front end (pedal box end) of the horizontal guide tube is swedged-down to a smaller diameter at the end of the tube. This-- to stop/locate the cable housing. In my case, the new cable-end (with the threaded stud) would not make it through that swedged area.

    So-- I had to lay on my stomach, with my head down in the pedal area, and using a tapered drift and hammer--- knock the drift into the steel tube to persuade a little larger opening. Not fun!! No place to swing very hard. But after a time, I was able to enlarge it just enough for the cable end to come through.

    Also-- at the engine end, make sure you re-use the rubber sleeve with the grommet on it that bolts to the cam cover. This protects your cable housing from flopping around and getting abrasion damage over time.

    All in all, the 4 hours it took to do the job was well worth it. I have better throttle "feel" than I have had since I owned the car (6 years). When I inspected the old cable, it had lost the coating on the steel cable jacket in 4 places, and the corrosion that set in-- had made the cable strands themselves deteriorate and separate.

    So there you have it. If they would have had the foresight at the factory to join the two guide-tubes with a curved section, the replacement would have been a lot quicker. But then, on the other hand-- this one lasted 24 years, so it's not like I'm looking at a repeat job anytime soon.

    Michael
     
  5. mondial5183

    mondial5183 Karting

    Nov 17, 2007
    80
    #5 mondial5183, Jun 26, 2009
    hi, i made the job on my 3.2 mondial coupe 2 month ago. You have to remove the protection fuel tanker panel under the car. Indeed on my 3.2, the trottle cable was stopped in this area. There are two tubes to guide the cable. The first finish just before the fuel tankers(near the axe of the control shift gearbox) and the second is on the fire protection in the engine bay. Between the two there is no junction so the cable stuck when you want to remove it and reinstall it. Morover, Rust often glue the cable sheath.
     
  6. mulo rampante

    mulo rampante Formula Junior

    May 31, 2011
    997
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    Charles
    #6 mulo rampante, May 28, 2012
    Last edited: May 28, 2012
    Just did the throttle cable in my QV. On my replacement cable, the threaded end that attaches to the yoke on the throttle pedal assembly has a hexagonal shape where it is swaged to the wire rope. This hex is too big to pass through the guide tube where it tapers near the end in the footwell. (The taper is used to restrain the ferrule at the end of the outer jacket on the cable.) The solution is to file or otherwise grind the hexagonal part to a cylindrical shape, it will then pass through the tube no problem.

    I bought the replacement cable from AW Imported Car Parts in New Jersey (awitalian.com) Other than the aforemented hex, it appears to be equivalent to the old cable and seems to be of very high quality.

    The previous posters' comments on the install process are spot-on. I was able to do it with the rear tires supported by ramps. Took about 3-4 hours all-in with the occasional beer break.

    If you are contemplating doing this for the first time, the idea of using the old cable to pull a new cable through is attractive, but as it turns out, unworkable. The old cable must be extracted from the engine end, and then the new cable inserted from the engine end. While you're under the car routing the cable from one tube to the next, you can also have a look at your fuel hoses, and take care to ensure that the cable will not interfere with anything else under there.

    As far as removing and replacing the threaded part that screws into the intake manifold riser: It is straightforward if the oil filter and the three hoses that attach to the side of the plenum are removed first. A short flare nut wrench is helpful in there. Not a lot of wiggle room, though.

    FWIW, hope this is of some help to someone else.
     
  7. jgoodman

    jgoodman F1 Rookie
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    Aug 29, 2009
    3,267
    Central PA
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    Jay Goodman
    #7 jgoodman, May 28, 2012
    4 hours of work to replace it, or 5 minutes of preventative maintenance by carefully WD-40'ing the throttle cable from the engine side using a spray straw, then followed by white lithium grease. I did this 4 years ago after my gas pedal/throttle began sticking. No problems since.
     

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