we changed the icp last time a while ago. sorry i didn't say i had a programmer. I've made threads about this same problem and just forgot to mention that. I also have noticed that the problems occur after or during the time in which the programmer is set to stage 3 if that is just a coincidence or related, I don't know.

 

Always return the setup to stock for troubleshooting 101.

 

So what happens if it does the same thing under the stock tune? and what about the tuning the transmission so it shifts like stock? Will this mean the programmer fried the computer?

 

The tuner didn't fry your PCM.

Whoever told you that story was blowing BS up your Let me guess, your buddy pulled a code P0603, and took that as a sign that your tuner was frying the PCM. That about right?


Most likely issue is a bad IPR. CPS and IPR are the two most common failure points that cause random engine stalling.

 

That is what i thought the whole time. Anyway since it is a hypertech, is there a chance that since it changes the settings in the computer it could mess up and cause the truck to die and not start, Not fry the computer but put glitches in it.

 

yes it was the p0603. So what do you all think is going on here? programmer glitching?

 

FYI, $1000 for a new computer is wayyy overpriced. I have an original invoice from a dealership for mine and it was $4XX. The guy I bought my truck from fried his computer with a edge programmer. There is a reason most programmers come with instructions and I think you can upset your computer if you don't follow those directions to the T.

 

Well the hypertech is an idiot proof programmer where it's pretty much just yes and no answers. Is the edge more like a chip where it plugs directly into the computer or like the standard kind? We are still looking to get a DP tuner. Also, where did you get that computer? just in case. I just need the most help I can get, this truck has had the same problem ever since we had it. I know its nothing big or anything to be worried about, I know once it is fixed it"ll be bullet proof. Im not the one to get frustrated over the little things ha.

 

If needed you can get rebuilt PCMs from a place in Fla.I can't find the link but if you search E-bay you will find them.Thare are some other places you can get used one a little cheaper


Found it http://www.autocomputerexchange.com/Contact

 

Highly unlikely.

No, that's not a programmer glitch. That code happens with all programmers. When you re-write the PCM with a tune, that code pops up. It's perfectly normal, and is expected to happen with any programmer.

The stalling issues are related elsewhere. Again the most likely culprit is your IPR, seeing as how you've already swapped the CPS and ICP sensors. The IPR is what controls your high oil pressures. If it sticks or if it's malfunctioning, the engine simply stalls or stutters. Seeing as how your symptoms follow that pattern, and the fact that you aren't getting any other codes to pinpoint the problem (IPR issues rarely trigger a code on their own), that's the most likely culprit.

You could try a test, it's not always foolproof, but it's worth a shot seeing as how you have access to a scanner. Next time it stalls and won't start, hook up a scanner and watch your ICP pressure and IPR duty cycle. Try cranking for a full 15 seconds without stopping while datalogging ICP and duty cycle. From there you can have enough information to datalog the actual oil pressures, as well as it might have enough time to trigger a code, telling you why it won't start. Oil codes typically have a time frame that must be met first before a code is triggered by the PCM.

For example, a P1211 code (ICP high/low) takes 7 seconds of continuous reading before that code is triggered. If you don't meet that 7 second threshold, the PCM will never throw a code. That's just one example.

 

sweet deal, this is the kinda of information that helps the most. Right now the truck is being driven on the stock tune just to make sure. Im actually hoping it dies right now.

 

FINAL UPDATE & FIX
Well, I made my trip down through Mississippi, Austin, TX to Dallas, TX and back to Chattanooga with the ICP sensor disconnected and the MIL on and all went well.
I was not doing any towing, just 'straight line driving'.
I had purchased a new ICP sensor before leaving town at a price of $176 - WOW.
I later found them on line from $40 bucks up to the price I paid.
They gotcha when you are down - I learned a good one this time.
So, it appears all is well and the truck is running fine for now - 378K, plus!

Thanks again,

 

i think you got the wrong thread man ha. I was just about to say that my truck has been in stock mod for a few days and has not died once. Im thinking it is the hypertech programmer now, or at least stage3 setting causing glitches in the computer.

 

He previously posted in this thread. See post #15.

 

Here's a theory. The truck is running fine in stock mode so far. I was thinking that the IPR may be bad but the tuner is making more power and more oil pressure to make the problems of the IPR visible, in stock mode, the oil pressure doesn't get high enough to cause the sensor to fail. Is this possible? It sucks driving the truck in stock mode with a suncoast tranny that shifts like hell with stock tuning.