Suddenly my tranny wont go into overdrive, shifts perfectly otherwise, dosent even try. Checked the switch, checked for codes, had the shop scan the tranny, everything seems to be good, The shop is telling me that they think it is my TPS,,, even with my deal it is over 500 bucks for the TPS, so I am looking for any ideas that anybody might have


Kevin

 

Try unplugging the Juice if you have not already. There have been a handful of people that ahd this happen and they removed the Juice and it works fine.

I think what happens is the truck goes into a limp mode because one of the injector banks gets out of balance. Not sure exactly what causes it. I am also not for sure that is your issue but it would be worth a try?

 

thanks for that,, I will give that a try tomorrow,, cant hurt can it,, other than my back,,, lol

Kevin

 

Now I have a completely different tranny that you, but when I put my triple disc in I forgot to plug a connection back up on the transmission. I didnt have overdrive or torque converter lockup, but all else was fine. Might want to crawl around, and check all your connections just to be sure.

Eric

 

I say take it out and send it on a weeks vacation to a tranny builder of choice!!! maybe you can get a AAA discount

 

I just bought this tranny,, and I did the crawling thing tooo,,, even brought it back to the place I got the tranny,, everything checks out good,, they think it might be the tps,, but at over 500 bucks I want to exhaust every other angle first.

kevin

 

Quick suggestion, hook up a scanner and check to see if the if the ecm is sending the signal for the OD to kick in. You have two solenoids in the VB for od and t/c lock-up, if the o/d solenoid is bad or not working there is your problem.

Richard

 

yep it kicked into overdrive doing that,, thanks for that suggestion though,, I forgot to list that

Kevin

 

ground the solenoid to make sure it is opening and functioning physically.. it is closed in the non energized position, Also put a pressure gauge @ least 300 psi to the od port(drivers side top of trans by od unit) you should see 75-150 psi on the gauge when the od solenoid kicks in...if you dont you may have a bad seal.

Richard


Pressure gauges don't lie...LOL

 

Ill try that,, thanks

Kevin

 

Update,, I uninstalled my juice today,, no change,,, put bully dog to stock,, still the same,,, going to try the TPS tomorrow, Man does it suck being stock with the bigger turbo,, this wont last long,, lol,,, going to send juice away for HOT upgrade,, cant wait for that. I will keep you posted on the TPS

Kevin

 

Went to go back out of my driveway today,,, and all I get is rattling of parts, goes forward no problem,, but no reverse, called the shop , they are going to look at it, thank god this happened before I bought the 525 dollar tps

Kevin

 

DTT is looking better and better