Sticky gas pedal | FerrariChat

Sticky gas pedal

Discussion in '308/328' started by GrayTA, Aug 23, 2011.

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  1. GrayTA

    GrayTA F1 World Champ Owner Rossa Subscribed

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    So a few weeks ago I noticed that my gas pedal was taking greater force to "break" from its resting position. I have worked around it a bit but its starting to get to a point where its really annoying. Is this something with the heat?? In the mornings it is not as prevalent, some days not even there, but then after a few minutes when things get warmed up there it is again.

    Any ideas???




    PDG
     
  2. GrigioGuy

    GrigioGuy Splenda Daddy Lifetime Rossa Owner

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    Mine does that from time to time. A very good spraying of silicon into the pedal box while the pedal is being pumped generally takes care of it for a while
     
  3. furnacerepair

    furnacerepair Formula Junior

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    You might want to take a look at the throttle body. They like to get sticky too. I need to hit the linkage with carb cleaner and then some silicone spray once a year or it tends to stick at 4000 RPM. That can be scary in slow traffic. Cruise control without the control. Then if I step in the clutch it will redline pretty fast. Happened twice to me so now I check it often.
     
  4. dfratini

    dfratini Karting Silver Subscribed

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    My 328 starting doing this and spraying some lube in the cable housing helped for a while, but it will continue to get worse. I finally had to replace the throttle cable / housing, which fortunately on a 308/328 is not a big deal.
     
  5. Island Time

    Island Time F1 World Champ Silver Subscribed

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    I used wd40 on the linkages 3 or 4 times before it quit doing it.

    Hasn't done it in a while now.
     
  6. ramosel

    ramosel Formula 3

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    Good info on the throttle body sticking... I've seen that on a few friend's cars.

    But, if it is your pedal...
    If you remove the panel on the underside of the car, the whole mechanism comes out fairly easily - 3 bolts, one cable (you may have to remove the small plastic cover and the forward part of the center console, depending on the tools you have). Besides the major pivot points on the pedal itself and another on the motion translation arm there are two spherical joints on the intermediate arm. For some reason, this area really attracts dirt. If that panel on the underside of the car has been damaged (ie: drug over a speed bump) and doesn't seal well this area can get extremely dirty. This mechanism cleans up with minimal work. While you are there you can tug on the cable once you have it loose and see if there is any binding there too.

    Rick

    ps - I have teardown pics if you want the whole process http://www.flickr.com/photos/moseley_ferrari/3872097514/in/set-72157621788322687/
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    Last edited by a moderator: Sep 7, 2017
  7. Robz328

    Robz328 F1 Veteran Rossa Subscribed

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    Good advice so far, guys!

    If you are not up for removing the pedal, just remove the plastic cover, vacuum out, clean with 409 (works well on greasy stuff and doesn't discolor carpet), clean/dry with rubbing alcohol (91%...avoid acetone since it may discolor carpet), then lube the pivot and cable with engine oil (recall that WD40 is not is long-term lube...it's more of a protectant).

    It's a good idea to lube the other end at the throttle body, too.

    Cleaning and lubing the throttle body area (cable attachment, butterfly valve) will help as well.
     
  8. GrayTA

    GrayTA F1 World Champ Owner Rossa Subscribed

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    Good stuff guys!! Thats why you are all my heroes!!!


    I will have to find some WD40 and some silicone and see what I can do!!!




    PDG
     
  9. veloce33

    veloce33 Karting

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    Also, remove the air intake hose and check for carbon coking on both sides of the throttle plate, this can also cause what you are describing.
     
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  10. boatr2001

    boatr2001 Karting

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    I tried everything..Cleaned and lubed linkages top and bottom. Lubed the cable several times with a motorcycle style cable luber- no great improvement. I finally replaced the throttle cable ($70 I think), and it has been smooth as butter...wish I'd had done that a long time ago- no visable wear on the old cable btw.
     
  11. Dr Tommy Cosgrove

    Dr Tommy Cosgrove Three Time F1 World Champ Owner Rossa Subscribed

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    You may be spraying and cleaning a frayed cable. I have seen 4 let go - the last was in May on Gatorrari's 328 here in Birmingham and he lives in Atlanta!

    Keep that in mind as a possibility.
     
  12. Beck

    Beck Rookie

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    The same thing happened to me earlier this summer. I had a frayed cable on my 86 GTS. The mechanic said that it could have snapped at any time while driving. I would have it looked at.
     
  13. Robz328

    Robz328 F1 Veteran Rossa Subscribed

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    These last three posts have revealed some insight as to the cable wearing out. So, guys, is there any early symptom of an iminent cable being too worn?
    Perhaps Patrick's symtoms are the indication.
     
  14. GrigioGuy

    GrigioGuy Splenda Daddy Lifetime Rossa Owner

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    It is a possibility. My cable has been replaced, and the mechanism still attracts muck and grime, with the need for occasional cleaning and lubrication.

    I did discover when I broke my cable that you can turn the idle up enough to get home, slowly.
     
  15. Dr Tommy Cosgrove

    Dr Tommy Cosgrove Three Time F1 World Champ Owner Rossa Subscribed

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    That's what we did with Jim's 328. I stuck a wadded up napkin in the TB's throttle assembly and he putted back to the hotel that night
     
  16. mwr4440

    mwr4440 Five Time F1 World Champ Rossa Subscribed

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    Watch your floor mats.

    They can give you cruise control at high RPM in a big hurry.


    Been scared sh_tless more than once that way.
     
  17. rob lay

    rob lay Administrator Staff Member Admin Miami 2018 Owner Social Subscribed

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    I have had all the following with the 328...

    1) inspected pedal linkage and everything, carpet fibers and gunk. = clean out.
    2) just sticky unsmooth pedal movement. = spray.
    3) sticky throttle body. = clean and spray.
    4) frayed and sticking throttle cable. broke. = replace.
     
  18. Robz328

    Robz328 F1 Veteran Rossa Subscribed

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    Looks about right.
     
  19. Scudjockey

    Scudjockey Karting

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    I just removed a plastic bottle cap from the 328 pedal linkage. I don't know how long it had been there but it was a bit mangled. It was preventing full throttle but other people I know have had a coin in there stick the throttle open. Nasty!. It is so easy to take the cover off that I am going to check it more often.
     
  20. andyww

    andyww F1 Rookie

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    What about the small roller which runs in the curved slot in the throttle body linkage? I would imagine that could seize and stop rotating then a flat would wear on it. Not sure if this does happen but looks like it might.
     
  21. Iain

    Iain F1 Rookie

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    Yeah it can, they wear square. Had to replace mine last year, managed to find one at Rutlands otherwise they are NLA I think.
     
  22. BLACK HORSE

    BLACK HORSE Formula 3 Silver Subscribed

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    I also having the same problem sorta... my throttle doesn't sticking open, causing high revs but its the opposite. Going around town, my gas petal sticks halfway, then it takes a little effort to be pressed down. This jerks the car while shifting... I replaced the throttle cable when this problem start happening...
     
  23. Sigmacars

    Sigmacars Formula 3 Silver Subscribed

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    You are right I solved the problem with this modification no more carpet problems
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  24. ginoBBi512

    ginoBBi512 F1 Rookie BANNED

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    Ive replaced both my clutch and throttle cable. I would recommend doing this no matter what , if yours are original.

    G
     
  25. newark_308

    newark_308 Karting Silver Subscribed

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    Just started having this issue today after getting new mats. How are you attaching that "stop" to prevent the mat simply pushing it into the throttle pedal?
    Sent from my SM-S918U using FerrariChat.com mobile app
     

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