Did not want to Move like the transmission was in limp mode?

06MEGA

MEMBER
2006 DODGE RAM
5.7L
V8
4WD
AUTOMATIC
190,000 MILES

My truck had always had a weird issue where sometimes when you'd start it, it would not move then you shut it off then put it into reverse then back into drive, it would drive fine. Eventually the truck needed so much throttle input to even go 1 MPH it did not want to move like the transmission was in limp mode. We replaced some sensors, then the transmission, then the PCM and then the TIPM. After the TIPM, the truck ran good for about 5 months then it came back but a little different. Now it's doing the previous problem along with rough shifting and sticking longer in gears than it should. I believe maybe the TIPM is shorting out somewhere or maybe the PCM was actually part of the problem because we replaced it before the TIPM. So, it's some type of wiring issue causing different things to short out, I need some info and help on this, Thanks.

2 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,643 POSTS

The first thing we need to do is run the codes here is a guide to help it does sounds like the TIPM is out again because they had problems with these, did you get a new part or used? a CAN scan is what you want to do which is easy, you can get a CAN scanner (Controller Area Network) from Amazon from about $32.00.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

and

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Amazon CAN scanner Link.

https://amzn.to/3G7mpFP

Let me know what you find in the meantime, here are the transmission wiring diagrams and a guide on how to test the connections:

https://www.2carpros.com/articles/how-to-check-wiring

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