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Throttle linkage sticking

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 90K5, Mar 20, 2001.

  1. 90K5

    90K5 1/2 ton status

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    I was slowing down today and kinda realized i wasn't stopping, put it in N, and the engine revved way up, got under the hood and pushed the linkage rod back down, and it looked a little bent. Do I need a new linkage to fix this? This is the third time its happened, I've been lucky so farwith no one in front of me...

    90K5

    See my truck at <A target="_blank" HREF=http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502>http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502</A>
     
  2. 90K5

    90K5 1/2 ton status

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    anyone???

    90K5

    See my truck at <A target="_blank" HREF=http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502>http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502</A>
     
  3. Twiz

    Twiz 1/2 ton status

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    See "$50 doller reward", yours is probably a throttle shaft, take it to a G.M. truck dealer (I'am biassed), Throttle shaft bushings should be installed by someone w/the proper tools, it does require drilling w/a bit made just for this repair.
     
  4. dyeager535

    dyeager535 1 ton status Premium Member

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    You are running TBI. Disclaimer: I have never messed with TBI.

    Is there a return spring on the TBI unit? Probably a cable from the pedal to the TBI throttle. Is there comsething obstructing the pedal? You could disconnect the cable at the TBI, and see if there is any binding in the cable to pedal. If not, then its probably the TBI throttle pieces, or the return spring. I had 135k miles on my K5, and the primary throttle shaft opening on the Q-jet was worn severely. I could not maintain a consistent idle. Rev the motor up, and each time, the idle would be different. Bushing the throttle shaft fixed that problem.

    If the linkage of whatever type is bent, that obviously could be your problem...maybe you can find another one to compare it to.

    Dorian
    My K5 and Chev/Olds tech/links page: <A target="_blank" HREF=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</A>
     

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