Engine/Transmission (1998.5 - 2002) Rear End Shudder

[Wellsp]

When I accelerate up a hill the rear end of my truck starts hopping usually around the 60 mph mark. The last time this happened, I was towing my 26' travel trailer over Mt. Hood Pass. I decided to conduct a couple of experiments. I pulled over and disconnected the Edge EZ Power chip. On the next hill I accelerated to the 60 mph and no shuddering. OK maybe it's a power/torque issue. So I reconnected the chip and disconnected the towing stabilization system to put more weight on the rear end. At the next hill I accelerated to 60 mph and again no more hopping. I pulled over the reconnected the towing stabilization system and took off. The hopping was back on the next hill. Any ideas

 

[Steve Campbell]

If I read your post correctly....

The additon of more power increases the shudder and the increase of weight diminishes the shudder.



First place to look is "tire Balance". That is probably not the issue... .



With the short bed, you do not have the carrier bearring.....



I guess that leaves the 2" lift. This changes the drive line yoke angles a lot from factory and could cause the shudder under either of the conditions you listed. Perhaps some "wedges" under the spring pack to "improve" these angles would settle the shudder down.



Hey, it may be something totallt different. Good luck

 

[jbone]

Might want to ask again down in the towing section--though guys tow everyday... ... ... ..... just a thought... . R, J. B.