My truck is an 04.5. I was in the sled pull 3 weeks ago where I broke my output shaft and flexplate on a built transmission when I first noticed it. I was running smarty on 8 TST on 3 on 2 and EZ 2. When the tranny blew, the motor stayed revved and even accelerated. I turned the truck off even though it was hot because I was afraid it would overrev.

Got the new tranny in Saturday and the motor was doing the same thing, running wierd. I removed the smarty, TST, and turned the EZ to the lowest setting. No help. I read the codes and there was a restricted power due to engine temps and an P0602 HPCR overpressure code. I removed the EZ and it was a lot more driveable like the EZ magnified the bad signal.

Besides the tranny the only thing I chaned was adding the dipricol rail pressure gauge. The gauge alternated between 5000 psi at idle and 11,000 max when driving. I have also tried removing the gauge to see about a bad connection with no help.

I thought the rail relief might be messed up so I removed the banjo bolt and capped the rail. This didn't change the available pressure range.

After capping the rail and driving around, I read my codes and got PO148 checksum error and PO602 HPCR Checksum error.


Do you have any ideas I could try. Any help you can provide is appreciated.

 

gues if you are gonna blowit, blow it right. lol. sounds like a heck of a pull.

 

http://video.thedieselgarage.com/vid...62001ea23d.htm

 

No ideas?

I've tried swapping the FCA's without solving it.

 

use your smarty to clear all codes and see what happens...

 

I've done that multiple times. I'm still getting a PO148 (High Pressure Commonrail (HPCR) Checksum), but the rail pressure gauge will never go above 11,000 psi

 

Maybe when the output shaft broke, the CP3 oversped since you were at redline (or close to) anyway. When the CP3 oversped it may have over-pressurized the rail and took out the rail pressure sensor? Have you tried replacing the pressure sensor from one off a friend's truck? I don't think it is the FCA from what you described to me in your email.

If the pressure sensor is bad, it would be sending bad signals to your ECM. The EZ would just magnify the bad symptoms since it manipulates the pressure signal to your FCA.

BTW glad you like the SPS62!