Accelerator Pedal "Sticking"

Discussion in '1976-1983 Pickup Discussion' started by 83pickup, Nov 20, 2022 at 7:40 PM.

  1. 83pickup

    83pickup Member

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    Hello again folks!

    Recently, on my hour and a half total drive throughout the valley today, I noticed a particular issue with my accelerator pedal:
    Upon flooring it (all the way down but NOT pressing the automatic choke button, don't know what'll happen if i did that while driving to be frank!) and relieving pressure off the pedal, the pedal doesn't return all the way and hovers the engine somewhat above idle (can't tell how much since there's no tachometer but probably below 1500 rpm guessing off of sound and engine vibrations?)

    I believe the linkage is to blame, but innocent until proven, since I have to manually reach down with my hand and pull the pedal all the way back properly which doesn't bother me but it would be nice to not have to in certain fast-paced situations; traffic mostly. I will trace the linkage wire to the certain thingamabob that makes it go vroom, carburetor or whatever it might be and report my findings tomorrow, went all over the valley today and I'm beat not to mention it's dark and I don't want to mash the pedal a bunch and flood it.
    I'll update this tomorrow i promise!!! not like with my replacing the driver side running lamp thread :silly:
     
  2. Ponyryd

    Ponyryd Member

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    FYI when a cable starts sticking the next thing it does is break, lol. Might be the carb or another issue but I would limit driving if you determine it’s the cable itself.
     
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  3. jetas

    jetas Grand Toyotaholic

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    Check the linkage, return spring, and maybe spray some PB blaster or oil in the lining. I have to do that every once in a while
     
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  4. 83pickup

    83pickup Member

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    Okay so upon a brief inspection, I've found a rubber grommet that appears to not be in the best of shape which goes into the cabin where the cable runs to the carburetor (picture with my finger pointing at it.) 16690749152119126872622608603110.jpg
    Where the cable meets the accelerator-carburetor linkage has some play in it, roughly half an inch, might also contribute to that (picture with my middle finger on it). 16690749989228895300397253278377.jpg
    Pedal linkage inside the cab has some slight play in it, and does need a little nudge to coax it back all the way when fiddling with it.

    Also noticed my distributor is leaking epoxy as a friend told me (picture of me pinching the goop on it) 16690750508848935682477439904768.jpg so I think I will replace that too, and a frayed igniter wire above it (picture of me pinching the wire; runs to the igniter assy.)
    Other than that, it seems to run good aside a coolant, brake, and clutch fluid flush! Checked the battery electrolyte level too and that seems decent from what I can tell... 16690751025438885940455874837253.jpg
     
  5. Ponyryd

    Ponyryd Member

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    The grommet will likely be part of the cable, and what you’re seeing appears to be a broken cable sheath, which will absolutely cause a sticking throttle.
     
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  6. 83pickup

    83pickup Member

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    Yeap, think this should be an easy job but then again I'm having a lot of firsts with this truck! Will check and see if it's still available by a slim chance from new. Glad to have found the cause for it, and onto the correction! :headbang:
     
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  7. 83pickup

    83pickup Member

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    Looks like RockAuto has some, albeit there's two different lengths listed:
    26.5" and 25.5"

    the ATP Y1157 one is 26.5"
    PIONEER CA8741 is 26.5"
    ATP Y716 is 25.5"
    and PIONEER CA8840 is 25.5"

    I will have to refer to my factory service manual on how to remove the cable and report back the length I pull, not sure if there's a defining feature on the trucks that dictate cable length (CA Smog, Transmission Types, 4x4 or 2WD, Early-Late model years?)
     
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  8. jetas

    jetas Grand Toyotaholic

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    You can probably get it from the dealer still
     
  9. 83pickup

    83pickup Member

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    I called a couple and they told me it was NLA for a long time now, they didn't mention anything about cable length so I will have to remove the cable and measure it in that case. Unless you know of a place with an OEM cable? :confused:
     

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