Starting like crap, IPR?

lariat 7.3 · Nov 28, 2013

Long story short, blew the back of the stock HPOP off. Put in a T-500 with the IPR from the stock pump. Ever sense then i've had a stumble when rolling into the throttle when its in overdrive. Had the tunes re written because it was going over 3000 psi. Ran fine other than the stumble is still there. Truck now cranks up sounding like a huge cammed out dragster, pedal is touchy when its doing this issue.

Rev it a hair and it generally goes back to idling smooth. Sometimes just shuts off like a CPS issue. Had it happen this morning with the computer hooked up and it threw these codes.... Also monitored cranking ICP and IPR values and recorded them, It was running rough when i did it. SOOO IPR bad?

[/URL][/IMG]

lariat 7.3 · Nov 28, 2013

how do i attach recorded files from AE?

DEEZUZ · Nov 28, 2013

Id unplug icp sensor or try a new one first

ghohouston · Nov 28, 2013

Agreed, icp sensor would be a start. Check for oil in the connector, if its wet, the sensor needs to be replaced. Beyond that, theres a number of things it could be. Is the problem only happening while cold or regardless of engine temperature?

mandkole · Nov 28, 2013

Wonder if the IPR is sticking. The OBS would start good 50 times, then sometimes have a delayed crank and it would 'cam out' on initial start. The scan gauge showed ICP out of control.

Since the 1280 came during the time when it was acting up, then you may have a sensor going bad. Id also look at the wiring and the plug. It will throw the 1280 when you unplug the ICP sensor. Clear the codes and monitor again.

Do you have an HPX line by chance?

On edit, you should be able to download the datalog to an excel spreadsheet.

lariat 7.3 · Nov 28, 2013

no oil in the ICP and yeah that was my first thought that the IPR was sticking, because sometimes i'll just be accelerating normally then all of a sudden power will kick in when i didnt even move my foot. The ICP was also going crazy from 300psi to 500. Monitored it last night when it was acting all cammed out when it was hot and jumping from 400 to 800.
When i try and attach the excel data log it says its in the wrong format or something. I'm hitting the attach file button