Good morning all. This is my first post although I've been following this forum for years. I have an 89 blazer with a 305 motor ( the owner before me put that junk in). Anyway the problem I'm having is the throttle cable seems to be binding. The throttle body seems to operate smoothly enough by hand, the accelerator pedal works fine and the cable by itself works fine, ( a brand new one by the way from LMC) but when everything is connected together the cable seems to be binding (I almost have to stand on the pedal to get it to move and I can only get about 1/2-3/4 throttle out of the thing. I've been fighting this for a long time but I'm at my wits end to come up with a solution. Anyone had this problem, what did you do to fix it? At some point I'm going to put a new motor in it but until then I want to be able to drive my baby with out this much frustration. Thanks.
CK5
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Throttle cable sticking
- Thread starter walt
- Start date
rampage
3/4 ton status
The cable probably wore a groove in the cable sleeve or it's dry inside the sleeve creating a lot of friction. Try rotating the sleeve 180* and/or lubricating the cable and sleeve.
Is the cable too long? Do you have any loops in it? Should run fairly straight from the firewall to the throttle body. Any extra turns will induce drag on the cable and make it hard to operate. Have you tried disconnecting from the TB and cycling by pedal? It has to be binding up somewhere, just need to find out where.
Joe In Montana
1/2 ton status
- Joined
- Sep 9, 2016
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There are two (2) things come to mind because i just committed one of them recently and the other hearkens back to my much younger days.
1. I incorrectly put the throttle cable end on the cruise control attachment point. It caused exactly what you are describing here: a mechanically disadvantageous position caused extremely hard pedal action and limited the throttle opening.
2. Be sure that you aren't damaging the throttle cable itself by having a defective ground from the frame to the engine. The throttle cable can wind up as a partial ground wire for the frame-to-engine integrity factor.
HTH. It's not easy to see your problem over the Internet.
1. I incorrectly put the throttle cable end on the cruise control attachment point. It caused exactly what you are describing here: a mechanically disadvantageous position caused extremely hard pedal action and limited the throttle opening.
2. Be sure that you aren't damaging the throttle cable itself by having a defective ground from the frame to the engine. The throttle cable can wind up as a partial ground wire for the frame-to-engine integrity factor.
HTH. It's not easy to see your problem over the Internet.
Lubricating made a world of difference. That was something I hadn't thought of, being a brand new cable.Thanks for the input. Now on to solving other problems.
It does seem longer than it needs to be, but lubricating it made a big difference. Thanks for you reply.
It was in the correct position (per the shop manual) and thanks for number 2 as that was not something I had thought of. So I removed it and gave it a good inspection, it was fine. Thanks for your reply.
Oh and it turned out lubricating it did the trick.
