Throttle Spring Parable
Thread Starter
Registered User
Joined: Oct 2005
Posts: 6,457
Likes: 95
From: KENTUCKY
Throttle Spring Parable
Ever since I got the engine that is in my Ford, that little double-spring throttle spring that hooks into the throttle lever and the bracket on the timing cover has been all stretched out of shape and not very "springy".
A few days ago, I noticed that one of the extra engines had a like-new spring; so, I switched the springs between the two engines.
I didn't drive my truck after that for about a week and sort of forgot that I had done anything different.
When I did drive the truck, I couldn't get over 2000-RPM, and it seemed very weak and anemic, leading me to think that maybe the carpet had gotten bunched up under the pedal, or something else must be going on; I had plenty of fuel pressure, so a clogged filter wasn't the problem.
I had my wife/assistant to work the pedal while I observed the throttle, and it was getting full travel, plumb to the stop.
I inspected the mat and carpet and all was well.
I drove it again and still couldn't get over 2000-RPM.
So..............., I completely removed that spring and took a drive; the change was amazing; the engine would immediately jump into high RPMs, and the truck felt like it wanted to jump out from under itself.
It still puzzles me; with the engine OFF, I could work the foot-pedal by hand and easily get full throttle travel; but, when driving, I had to nearly push a hole in the floor to get over 2000-RPM; it just doesn't make good sense.
The spring(s) doesn't feel all that stout and all seemed to work well when on the other engine.
The throttle still has plenty of return springs, so I see no safety issues in the absence of that spring.
I just put this here on account of I had read other accounts of poor pedal performance issues related to this spring and thought my experience might be of some benefit to some one else.
A few days ago, I noticed that one of the extra engines had a like-new spring; so, I switched the springs between the two engines.
I didn't drive my truck after that for about a week and sort of forgot that I had done anything different.
When I did drive the truck, I couldn't get over 2000-RPM, and it seemed very weak and anemic, leading me to think that maybe the carpet had gotten bunched up under the pedal, or something else must be going on; I had plenty of fuel pressure, so a clogged filter wasn't the problem.
I had my wife/assistant to work the pedal while I observed the throttle, and it was getting full travel, plumb to the stop.
I inspected the mat and carpet and all was well.
I drove it again and still couldn't get over 2000-RPM.
So..............., I completely removed that spring and took a drive; the change was amazing; the engine would immediately jump into high RPMs, and the truck felt like it wanted to jump out from under itself.
It still puzzles me; with the engine OFF, I could work the foot-pedal by hand and easily get full throttle travel; but, when driving, I had to nearly push a hole in the floor to get over 2000-RPM; it just doesn't make good sense.
The spring(s) doesn't feel all that stout and all seemed to work well when on the other engine.
The throttle still has plenty of return springs, so I see no safety issues in the absence of that spring.
I just put this here on account of I had read other accounts of poor pedal performance issues related to this spring and thought my experience might be of some benefit to some one else.
Thread Starter
Registered User
Joined: Oct 2005
Posts: 6,457
Likes: 95
From: KENTUCKY
Weak as in one leg has worn in two and has been "fixed???" by the short piece of welding-rod method wherein the stub of 1/8" rod is captured somehow behind the little rod-thingie that is already there.
Mine ain't the only one around here with such a fix and I can't take credit for it.
I did have the part number for a new one written down somewhere.
Thread
Thread Starter
Forum
Replies
Last Post
