Engine/Transmission (1994 - 1998) Drive train slack?

[M Barnett]

Hello fellows, need some advise. I'm working on a friends 96 quad cab, five speed. When towing if you hit a bump, you get a lot of surging from the drive train and kinda hard to locate the problem. The drive shaft and all u-joints aren't very old, it was all replaced when he had a U. S. Gear transmission installed. It kinda feels like it may have axle wrap, with the axle rotating up and down. I put in a #10 plate, 3K gov. springs and afc spring. All of this has made it more pronounced, I would imagine with the additional power. Its also a 4X4, could it be slack in the transfer case? If you have any ideas, throw them my way, I'm going to look at it tomorrow.

Thanks

Michael Az

 

[redram]

Could be your throttle bouncing at the injection pump.

Has the truck had the updated cable put on?



Just a thought. There was a Tech Service Bulletin called "bucking truck syndrome" that they applied to all 95 and 96 5 speed trucks.

 

[Deezul1]

Check for broken return spring, I believe there are 2 and when 1 breaks it will do that. I am not sure where they are but remember reading about it here somewhere.

 

[M Barnett]

Redram: I didn't know about the service bulliten, I will see if I can find it. I replaced the throttle cable last week as his was almost broken. Thanks for the advise.



Deesul 1: When I replaced the cable, I found the small return spring broken and put a new one on. Thanks

Michael