Ok, so as a lot of you guys know ive been hunting a surging issue. Ive noticed recently that my ICP pressure was surging 400-500 PSI when my truck starts running a little badly and that Engine Oil temp sensor code comes up. Ive had a problem in the past where it ran up to redline, I wonder what my ICP pressure was then. Well, I am watching it on my monitor from now on. My ICP pressure under full load from 0-60 towing a 3k lb load is 2500 at 35.5% IPR. Is this a normal pressure? My idle is about 460-490 at 11.5%. Currently Im trying to hunt down a replacement PCM, as Ive been told my voltage coming from my PCM is too high for my EOT sensor. But I think I have more than one problem going on. I do have a seeping HPOP, so I know I need to get in there at some point anyhow. I just cant replace everything right now. But I do need to figure out what it is!

 

Those numbers I would consider a pretty healthy HPOP, IMO.

Have you replaced the EOT sensor?

 

Yes, EOT sensor has been replaced but did not solve the issue. I then went and had the PCM tested and they found excessive voltage going from the PCM to the EOT sensor was causing the code. I also forgot to mention, the PCM has been getting a P0603 KAM (Keep alive memory) error, this is a PCM code. So, I know I have some PCM issues, but I wasnt sure if I also had some HPOP issues. With the HPOP seeping and the surging... I'll keep on the track of replacing the PCM then, thanks! Lets hope that fixes everything. Now if only they can stop sending me faulty PCM's...

 

P0603 s pretty common, I have got that code with a chip from one tuner, then with a superchips flashed on the PCM too. My current tunes I don't get it, maybe your Edge is causing that issue?

 

Heres the thing. I dont have the DP tuner installed and never have. I bought it used and I have been waiting to install it until I can sort out my PCM issues. So my P0603 code is from my PCM flipping out. The Edge Insight is a monitor only, there is a different model called an Edge Evolution that has a tuner built in. If my monitor were to cause that code, it would be like getting a P0603 from hooking up a scantool.