It is a stock 91 K-5. When I first take off driving normal and let-off the throttle below about 35-mph the throttle still holds. It acts like the cruise is engaged. I know it is not because I have unplugged it. Checked for burrs or frays on throttle cable, made sure there was nothing in the way for the throttle to hang up on. I can hook the pedal with my foot and lift it and it releases. Please any advice this is driving me nuts and has also almost caused me to have an accident.
CK5
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Throttle problem!!!
- Thread starter tonto
- Start date
You disconnected the cruise...by removing the throttle cable from it, or electrical?
Anyways, does it do this ONLY when you are driving it?
Anyways, does it do this ONLY when you are driving it?
Electric plug on the cruise. Yes only while driving. Only at speeds below 35. Also seems to hold until it shifts into third. What I mean is I can take off normal and be doing about 25 and let off and it holds throttle then it shifts to third and releases. Forgot to say it is an auto trans. Know the speed because it always does it to me after I drop the kids off at school and I am in a school zone. Thanks for the reply.
That's pretty bizarre alright.
I'm wondering if you've got something going on with the TV cable. If it were the throttle body or pedal binding, I'd expect that it would happen whether you were driving or sitting, at any speed.
If you disconnected the throttle cable and cruise cable from the throttle body, and moved the throttle body at idle, it SHOULD do it if it's throttle body related.
I'd mess with the TV cable last. The 700 will burn up in short order with it disconnected or misadjusted, so it's not something you want to mess with before understanding how to make sure its set right. I think tvmadeez.com (?) is a site that explains it well.
I'm wondering if you've got something going on with the TV cable. If it were the throttle body or pedal binding, I'd expect that it would happen whether you were driving or sitting, at any speed.
If you disconnected the throttle cable and cruise cable from the throttle body, and moved the throttle body at idle, it SHOULD do it if it's throttle body related.
I'd mess with the TV cable last. The 700 will burn up in short order with it disconnected or misadjusted, so it's not something you want to mess with before understanding how to make sure its set right. I think tvmadeez.com (?) is a site that explains it well.
Sounds almost like the cruise vacuum module is working of it's own accord. Getting and holding a vacuum somehow, then the lower manifold pressure of low revs in 3rd is helping it release. Strange indeed. Try disconnecting the cruise rod from the vac module to the TB.
Well been playing with the throttle and it looks and feels like the butterfies inside the throttle body are catching on the bores. Doing the thottle by hand and you can feel the hangup in it.Always in the same spot. So now what?
Sounds like the throttle shaft needs bushed. Not sure if this is a common TBI problem or not.
Install a new TBI gasket and before you tighten it down try to center the TBI unit the best you can while checking for any obstruction of the throttle blades.
tonto said:
That might explain alot. The TBI spacers IMHO are junk. I bought one once and tried to install it then took it right back after my throttle cable, TV cable and cruise control would no longer reach the TBI unit. Even if you're lucky to have all those items hook back up if the TV cable geometry isn't correct say bye bye to the trans in short order.
Wise words. My spacer got used for scrap!4X4HIGH said:
DavidB
1/2 ton status
Mine sticks shut. When I go to accelerate, it's stiff at first, then vroom! Makes wheeling gracefully difficult.
