Engine/Transmission (1998.5 - 2002) TST problems now problems with everything

[JSHAW]

Any ideas? i started having a fueling problem with my TST PM3 comp. So I cut off the scotch locks and soldered all the conections. This worked for about a week and then stopped fueling so I ran the ground right to the battery and it worked for a few more days then stopped fueling again. The fuse is good and so are the conections. I tried checking grounds and left work. On the way home it went into limp mode. I brought the truck to my diesel mechanic and he got it running again but now I have no PM3 or VA no propane, no pacbrake and the transmission is shifting differently. Does anybody have any ideas?



thanks, Jim Shaw

 

[Hohn]

Sounds like a short somewhere took out the point where you installed your accessories.



jlh

 

[JSHAW]

My altenater is good I think. Starts up fine, batterys read charged. It runs great exept for the things I listed.



Jim Shaw

 

[Big A]

Where do you have the TST box located. In the cab or engine compartment?

Big A

 

[JSHAW]

I have it in the cab velcroed by my left knee. All my conections are soldered and checked everything is right (or should be). I was having problems with my ATS lockup controller and found a loose wire where the harness goes into the transmission. I reconected the wire and the truck went into limp mode. I got the truck to my diesel mech. and they got the transmission shifting again but no exhaust brake no TST no VA nothing. I'm stumped. If anybody has any ideas please let me have them. Thanks, Jim Shaw

 

[Wiredawg]

Start Eliminating...

Disconnect everything, thoroughly inspect wiring as you remove and see if you rig straightens out. Then, connect each accessory until your problem reappears. it may be more than a wiring problem; it could be a malfunctioning component. Make sure all grounds are clean and power cables are not damaged.



Hope this helps. Good Luck, Wiredawg

 

[JSHAW]

Wiredawg,



Good idea thanks. The only thing I don't know how to disconect is the pacbrake. Anybody ?

 

[bmoeller]

Does your brake have its own fuse?

 

[JSHAW]

That's what I don't know. Just about everything else on the truck I did by myself or with friends. The pacbrake was done by a shop. The main reason I want to fix this myself is to learn more about the truck. I was getting really fead up with this problem and almost got rid of it, but when I finished looking at duramaxs I realized how much I really love my truck and want to do what ever I can to fix it and keep it. That's why I keep asking questions on this site because of all the combined knowledge of everyone. Thanks for all the ideas.

 

[John - K5AWO]

What did you come up with on your problem? You kind of left us hanging.



Are the battery terminal clean and free of corrosion?