02 XLT V8 shaking

[RyanT]

The problem I am experiencing is after an extended drive of about 15-20 miles, when I come to a stop a rough shake is felt inside the cabin, now mind you this does not occur while making quick runs to the store and such, my local dealer is having trouble finding a problem, but is leaning towards a possible ERG valve being stuck open. Does any one else experience this, or have any advice, thanks in advance.

 

[exploded99]

Don't have a definitive answer, but you may want to pay attention to how your torque converter is working - if a torque converter stays locked up at idle, it can cause idle problems.

When the truck is good and hot, get to a steady speed on the highway, press lightly on the accelerator, make sure the torque converter lockup quickly disengages and the rpm's go up a few hundred. As you return to a steady speed , the torque converter should lockup, and the rpm's should drop back down.

Dealer has some tests they can do if they suspect a tranny issue.

 

[RyanT]

Thanks for the response. It was definetly not a tranny issue, the dealer found the ERG valve was staying open after the engine warmed up. It took them 2 days of test driving to finally feel the shaking.