Engine/Transmission (1994 - 1998) Throttle Linkage Question

[CEdwards]

While I was pulling my gooseneck on a 200 mile trip yesterday I had the same problems as I've mentioned before in previous threads. As it got warmer on last 60 miles it wouldn't lock into overdrive and it started acting like it was running out of fuel. Fuel pressure was good. I pulled over to try to solve the problem and discovered that the linkage from the throttle cable to the governor was binding up and not returning to the idle position. That explains the strange shifting and the overdrive not locking out I guess. I found a can of wd-40 in the back and sprayed the ball and socket joints and tried to work it back and forth. It didn't help because the joints were free. The problem seems to be in the governor lever. After I barely made it back I let it cool for a while and the throttle was free again. I've been all through the fuel system for months now. It made a dramatic improvement when I started putting stanadyne in the fuel. But the same problem is there if you work the engine long enough and hard enough. The governor arm gets really stiff. It takes considerable effort to move it. as long as it is free truck runs great. When it gets stiff it acts like its not getting fuel. It starts missing then it might rev up again and then miss again and if I keep my foot in it and keep driving when I do let off the pedal it will stay revved up and then usually die and then I can pump the pedal, turn it over for a while and get it to idle again. any ideas? please help Ive been chasing this for a year now.

 

[bmoeller]

Have you messed with the AFC housing at all? If it isn't getting enough boost to move the foot out of the way, it will cause low power.

 

[CEdwards]

haven't messed with anything. I don't understand how the governor or any of that stuff works, thats why I'm on here. What ever the problem is it's definetely heat related.

 

[Joe G.]

Nothing to do with the AFC would cause this. Especially the hanging on at high throttle after lifting.



Have you tried to locate where the problem is by disconnecting the cable and throttle rod when the problem occurs to attempt to locate where the sticking is happening?



There was a safty recall on the throttle linkage for your truck. If it still has the almost invisable wire clips on the throttle rod ends then it has not been done on your truck. It's free so have it done if it has not been.

 

[CEdwards]

it was replaced by the recall a long time ago. if its not likely anything in the afc then possibly i'm looking at more than one problem. is that what you would think?

 

[TRCM]

When I test drove mine, it would stick when you lifted. I ended up replacing the bushings that the shaft rides on. Fixed the problem.



I believe the part number is 4425053. . you'll need 2 of them.



I could manually move the linkage, and it would stick. it also had some wobble to it. New bushings - no wobble.

 

[radixr]

TRCM



Are you talking about the injection pump lever shaft?

 

[TRCM]

NO. The throttle linkage that the cable from the pedal hooks to, which has a shaft thru it. The shaft itself rides on bushings inside the metal support.



The shaft I am talking about is up front and just outboard of the pump. It is operated by the loud/skinny pedal, and it in turn operates a lever at the back of the engine, I think for the pump.



I'm still learning what & where all the stuff is on these things.