Very fast idle

[The_Handier_Man1]

From: calbrave  (Original Message)
Sent: 1/30/2005 12:35 AM

We took a trip today and the longer we drove, the faster the idle was. By the end of the day, we were going 70kmh without touching the gas pedal. Has this happened to anyone else?
In park or neutral, stomping the gas pedal would bring it back to normal, but as soon as started driving again it would go back up. If we put it in park, the rpms would race like we were almost flooring it.



From: Sea Hag
Sent: 1/30/2005 11:29 AM

Sounds like something is sticking . check and lube your throttle cable , linkage, and return springs . .  Sea Hag



From: cooneytunes
Sent: 1/30/2005 1:25 PM

I had the exact same problem, not sure what it was, may have been a vacuum problem, (hose collapsing) I change all the hoses,  but I think it was, gummed up linkage on the carb...Cleaned it with carb & choke cleaner, seems to work at an idol correctly now ..It's was OK on the open road when it stuck, a little like cruise control..... but not in traffic,  sure made it a little scary. Have not driven it, so I'm not sure it was cured, but it seems the return is working now. When the weather gets a little warmer I will do a test drive to see if it's fixed.

Timmy



From: calbrave
Sent: 1/30/2005 4:15 PM

Thanks for the replies. It does look like either something needs to be lubricated or a return spring is missing or broken.

In this first picture, throttle cable (in red) isn’t returning to position unless I push it back manually. There’s a broken spring (blue), but it looks to me like it might be designed to attach to whatever this thing is:

It has a metal arm attached to it which isn’t connected to anything else.

Should I just be: lubricating the throttle cable, fixing and reattaching the spring, or cleaning out the carburetor?

Thanks,

John



From: denison
Sent: 1/30/2005 5:27 PM

If the broken spring is the thing at the top of the throttle.jpg picture, that probably needs to be attached to the carb linkage next to the throttle cable.
To check the free operation of the carburetor you can disconnect the throttle cable from the linkage. Depending on the carburetor it might not want to spring back with no return springs connected, but it should rotate back and forth with no noticeable friction. Lubricating the carburetor shafts wont hurt.
* Lubricating the throttle cable is a very good idea. It should be free enough that when it is disconnected from the carb and any springs, that the weight of the gas pedal will draw the cable back away from the carburetor. To lubricate it I would disconnect it from the nearby support, so I could hold it up in the air. This would allow oil to run down the inside of the cable sheath. I would use a thin oil, like 3 in 1, or even marvel mystery oil, and I would dribble it down over a period of hours, even days if you have the patience. This would help flow the rusty crud out the other end of it - which is in a sort of inacessible location.
* Reattaching the return spring is important. And the spring should be just strong enough to balance the weight of your leg. It wont be so tiring on long drives if it doesnt take extra force to keep your foot at the right throttle opening. I even have an extra throttle spring in place, for the day when the old one breaks. Its not connected at the carb end though.
* In your picture whatever.jpg, that is a vacuum diaphram for a cruise control. It would normally have a small cable or a small chain, like a key chain, running to the throttle linkage.



From: calbrave
Sent: 2/1/2005 1:55 AM

Once again, Denison seems to have gotten lucky. I worked the 3 in 1 until the pedal was returning on it's own weight and then attached a new spring to the throttle linkage.
She's as good as new for $7.29 in parts.



From: mightybooboo
Sent: 2/1/2005 12:25 PM

"Once again, Denison seems to have gotten lucky. I worked the 3 in 1 until the pedal was returning on it's own weight and then attached a new spring to the throttle linkage.
She's as good as new for $7.29 in parts. "


FANTASTIC,love to hear success stories like that!!

BooBoo