Sticking throttle cable.
Thread Starter
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
Sticking throttle cable.
I notice my brand new throttle cable has 2 very tight bends to the carb. And i thought my carb was wacko as it stick on high rpm for a while and slowly slip to idle rpm - but not every time. Kept blaming the Qjet but discovered the tight cable while working the butterflies at the carb throttle lever.
I recall that cable was not fun to install - plenty of time upside down.
Any fix to a tight throttle cable?
cardo0
I recall that cable was not fun to install - plenty of time upside down.
Any fix to a tight throttle cable?
cardo0
Le Mans Master
Joined: Sep 2004
Posts: 5,116
Likes: 5
From: Livonia MI
Throttle cable problems are nothing to be taken lightly. While maybe a pain to pull back out and inspect, the outcome could be a lot worse. If the internal cable somehow frayed and is grabbing, you're wanting to check this. Know a few guys having this happen on high powered cars, and didn't turn out very pretty.
Thread Starter
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
Throttle binds and creeps.
Throttle cable problems are nothing to be taken lightly. While maybe a pain to pull back out and inspect, the outcome could be a lot worse. If the internal cable somehow frayed and is grabbing, you're wanting to check this. Know a few guys having this happen on high powered cars, and didn't turn out very pretty.
Yes, larger throttle return spring with a counter spring too.
Thx for the replies,
cardo0
Burning Brakes
Joined: Dec 2008
Posts: 971
Likes: 45
From: Middlesex NJ
Maybe its a bad new cable?
Disconnect it from both the carb and the pedal and work it to see if it is bound up. It should work very freely. Get a new GM one and be done with it. This is something that has to work right all the time. Bigger springs will hose your throttle shafts and will only treat the symptom not fix the problem.
Make sure your pedal shaft isn't bound up either. If your using an aftermarket carb and or throttle cable bracket then you maybe having issues with how its locating the cable.
Disconnect it from both the carb and the pedal and work it to see if it is bound up. It should work very freely. Get a new GM one and be done with it. This is something that has to work right all the time. Bigger springs will hose your throttle shafts and will only treat the symptom not fix the problem.
Make sure your pedal shaft isn't bound up either. If your using an aftermarket carb and or throttle cable bracket then you maybe having issues with how its locating the cable.
Burning Brakes
Joined: Jun 2008
Posts: 1,086
Likes: 1
From: Michigan
Once you have assured yourself that your new cable and accelerator rod attached to the gas pedal are working as smoothly as possible and routed according to the AIM do what I did.
I used two concentric throttle return springs and added a second concentric throttle return spring attached to different attachment points that the first return springs. I have slightly more prressure on the gas pedal but I'm o.k. with that.
If you have an incorrect ignition shield box or brackets it may be forcing the cable at an extreme bend.
I used two concentric throttle return springs and added a second concentric throttle return spring attached to different attachment points that the first return springs. I have slightly more prressure on the gas pedal but I'm o.k. with that.
If you have an incorrect ignition shield box or brackets it may be forcing the cable at an extreme bend.
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Burning Brakes
Joined: Dec 2007
Posts: 889
Likes: 0
Maybe picture of your setup would help the folks visualize your issue???
I notice my brand new throttle cable has 2 very tight bends to the carb. And i thought my carb was wacko as it stick on high rpm for a while and slowly slip to idle rpm - but not every time. Kept blaming the Qjet but discovered the tight cable while working the butterflies at the carb throttle lever.
I recall that cable was not fun to install - plenty of time upside down.
Any fix to a tight throttle cable?
cardo0
I recall that cable was not fun to install - plenty of time upside down.
Any fix to a tight throttle cable?
cardo0
Burning Brakes
Joined: Dec 2007
Posts: 889
Likes: 0
Maybe picture of your setup would help the folks visualize your issue???
I notice my brand new throttle cable has 2 very tight bends to the carb. And i thought my carb was wacko as it stick on high rpm for a while and slowly slip to idle rpm - but not every time. Kept blaming the Qjet but discovered the tight cable while working the butterflies at the carb throttle lever.
I recall that cable was not fun to install - plenty of time upside down.
Any fix to a tight throttle cable?
cardo0
I recall that cable was not fun to install - plenty of time upside down.
Any fix to a tight throttle cable?
cardo0
Thread Starter
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
Pictures and posting not normally in my schedule.
Yes a picture could help. It's already on my to do list. Along with find my camera, charge the batts, snap the pix, load to a thumb drive, upload to a website.
Oops, where do i load the pix?
cardo0
Oops, where do i load the pix?
cardo0
Thread Starter
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
Posting pix are more work than a can of mushroom soup.
Ok, Ok, i heard u the first time. Yes, more than one picture would help even more. I should gett'er done as soon as get the headers changed on my camaro, and the roll cage installed too.
Well, could be after the MSD box is in and wired. Maybe even before the new trans and torque converter go in.
Oops, what about my vettes front end reassemble? Set the toe? The shifter overhaul?
cardo0
Well, could be after the MSD box is in and wired. Maybe even before the new trans and torque converter go in.Oops, what about my vettes front end reassemble? Set the toe? The shifter overhaul?
cardo0
Team Owner
Joined: Jul 1999
Posts: 26,545
Likes: 46
From: Huntersville NC
My throttle was a little sticky, I would tap the accelerator a bit and it would unstick. Then I would take off the air cleaner and lid to get a good look at what was going on and it wasn't sticking at all. Me being a total idiot, someone else had to show me the spot on the bottom of the air cleaner base where the carb linkage was getting hung up. oops! Just bent it a little to move it out of the way and problem was solved.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,116
From: Crossville TN
I'm confused... Are you ready to work on the cable problem, or not? [You are the one who started this thread, I believe.]
You either purchased the wrong cable...too long and forced to take up excess cable by putting more bends in it...or it is routed wrong. The stock cable install does not have any "tight" bends in it. There are a couple of 'easy' bends to bring the cable up off the block and get it aligned with the carb linkage, but that's about it.
See if you can re-route the cable to smooth out the bends. If not, find the correct cable.
You either purchased the wrong cable...too long and forced to take up excess cable by putting more bends in it...or it is routed wrong. The stock cable install does not have any "tight" bends in it. There are a couple of 'easy' bends to bring the cable up off the block and get it aligned with the carb linkage, but that's about it.
See if you can re-route the cable to smooth out the bends. If not, find the correct cable.
Thread Starter
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
More springs if i can find them.
My throttle was a little sticky, I would tap the accelerator a bit and it would unstick. Then I would take off the air cleaner and lid to get a good look at what was going on and it wasn't sticking at all. Me being a total idiot, someone else had to show me the spot on the bottom of the air cleaner base where the carb linkage was getting hung up. oops! Just bent it a little to move it out of the way and problem was solved.
Once you have assured yourself that your new cable and accelerator rod attached to the gas pedal are working as smoothly as possible and routed according to the AIM do what I did.
I used two concentric throttle return springs and added a second concentric throttle return spring attached to different attachment points that the first return springs. I have slightly more prressure on the gas pedal but I'm o.k. with that.
If you have an incorrect ignition shield box or brackets it may be forcing the cable at an extreme bend.
I used two concentric throttle return springs and added a second concentric throttle return spring attached to different attachment points that the first return springs. I have slightly more prressure on the gas pedal but I'm o.k. with that.
If you have an incorrect ignition shield box or brackets it may be forcing the cable at an extreme bend.
cardo0
Also, for those confused here, as i mentioned/implied in my very first post, i don't want to contort myself again to replace that cable unless absolutely necessary.
Thread Starter
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
Throttle bracket for a Qjet?
Who makes an adjustable throttle bracket for a Qjet? This maybe my best option. I see plenty for Holley and AFB type carbs. Could i mod one to work with a Qjet?
Maybe i need to start a new post for this but i'll try here first,
cardo0
Maybe i need to start a new post for this but i'll try here first,
cardo0
Thread Starter
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
A little massage therapy seems to work.
Well i did a little bendology on the carb bracket. And moved the throttle cable above the tach cable. I left it still with two bends but in more of a cork screw than an S. Take a look:
http://www.cardomain.com/ride/445470...orvette/page-7
http://www.cardomain.com/ride/445470...orvette/page-8
The cable must have relaxed somewhat. It seems to work now but i will be replacing the return spring ASAP. I was told PepBoys has carburetor return springs for GM cars. Just have another delay now - my dizzy quit.
Thx for the help everyone,
cardo0
http://www.cardomain.com/ride/445470...orvette/page-7
http://www.cardomain.com/ride/445470...orvette/page-8
The cable must have relaxed somewhat. It seems to work now but i will be replacing the return spring ASAP. I was told PepBoys has carburetor return springs for GM cars. Just have another delay now - my dizzy quit.
Thx for the help everyone,
cardo0
