I was going to do a boosted 4wd launch, got up to about 25psi and had to let off. I went to stage it up again and now the rpm's wont go over 900, it acts like its in valet mode. Truck still seems to drive fine and still builds boost while regular driving, just wont do it with foot on brake trying to do a boosted launch. No cel, no codes. The turbo does sound a little different when shifting in and out of park and the truck seems to want to lunge between park, reverse and drive. Anybody got ant ideas whats going on?
Problem after trying boosted launch
- Thread starter DrtyMax07
- Start date
I've hit that psi before practicing as well. You say it lurches pretty hard now when shifting? Like it's trying to push through the brakes a little harder? May have cooked the converter?
Well it finally let loose, i was out checking it out trying to figure out what was going on and got a loud bang and now wont move forward and only has reverse. Fluid is black, guess its time for another build. Not sure if the converter is good or not so I guess its getting a new one as well
Sounds like you cooked the converter good and proper to me. Maybe even took the C1's with it since you say it has reverse but no forward.
The question is how long were you holding it on the brakes to get it to spool up that high and then how long you held it there. Couple that to how many times have you done this and how hot was it when you started spooling it? ANY converter can be cooked if you beat on it to hard to many times.
I left the line around 30psi a bunch of times with my old ML. It was still doing fine when I replaced it. Just wanted something different. May have had a bad converter to begin with. How long has it been together.
