Truck is getting worse. Takes a ton of rpms to get the SOB to move now. The motor is running up, but the truck is barely moving at acceleration. It still shifts perfect and holds gears. I'm ordering a Fuddle 3200 this week, damnit!!!

 

Have you tried driving it with tow/haul on? Wonder if you would see a difference, I think it bumps up line pressure some. Just curious what it would do??

 

Does the converter lock? If so, do the rpm's come down when it does?

 

Kenny, it takes forever to lock up, and it wasn't this morning.
Coming to work this morning, it was acting terrible. Right before I pulled into the warehouse drive, out of nowhere it jarred the truck pretty hard. I coasted it into the warehouse parking lot, but I had to come on in and couldn't check it out. It could be completely fubar now. Sitting here wondering how the F I'm going to get home now.

 

Had time to check the fluid. Looks like burnt fluid. Wasn't changed long ago and it doesn't have the look of new fluid. Looks like the built 4l60e is toast. ha ha ha ha ha ha ha...........DAMNIT!!!!!!!

 

It may be a stuck shift solenoid.

 

Welcome to the club...