with the amount of money i have spent on the truck i could have had it fixed by now i have never had to put one in the shop to be fixed but this is getting dragged out to long

 

Yeah, sometimes ya just gotta bite the bullet..... Not having a good scan tool is really a handicap when working on these guys.... I don't know many folks that have 2500 bucks to blow on one though.... at least, not folks that DON'T do it for a living...

 

That stinks!

 

OK we had alittle time to get the meter out and run a couple of tests. We discinnected the pcm c1 connector and measured the resistance between pin 17 and pin 4. We got like something about 20ohms ? We then unplugged the c2 connector and had continuity at c1 pin 17 ? What does this all mean ? Check light is still on and truck starts and runs fine. Any thoughts would be great.

 

yup i dont have one of those and the shop down the road said they will come pick it up and tell me what is wrong with it for $100.00 so i think before i keep shooting it the dark with 50 50 50 50 50 on parts i am gonna let them look at it

 

well ha ha it was a ground wire to the computer truck is fine just has a bunch of new parts now thanks yall

 

Good deal someone actually used there meter and posted the results. When you probed pin 17/4 this is the complete circuit that the 5volt takes back to ground at the pcm. You test resulted in 20ohms which is a dead short in the 5volt supply wire. To confirm this you next disconnected both C1/C2 at the PCM testing pin 17. This should be an open circuit as the circuit ground is disconnected at the PCM (normal return). Yours tested continuity which confirms test 1 of a dead short. Check the TPS wires along the harness for breaks all the way back to the PCM. Did you wiggle the wires/harness when testing? That will help track down the shorted 5volt wire.

 

Congrats,Glad you figured it out. I won't say a lot of post's suggested that. Have fun with your new truck man.

 

Cant anyone be more specific. Which ground wire was it?

 

+100......