AE

Hey RT,

New at this diesel stuff. Owned the truck for five years and except for brakes have'nt had any issues. What is AE . I have the truck back at Ford will hear tomorrow what they plan on doing . Im thinking if all thy plan on doing is changing out parts I can do that myself. I'll have to pickup a scanner any suggestions as to a good brand

 

What is AE?

I'll have to pickup a scanner any suggestions as to a good brand?

Yep - you answered your first question in your last question. AE - AutoEnginuity is a PC based scanner. It has a OBD connector that plugs into your USB port. The software runs on your laptop (or desktop with a LONG cord..) - the Ford Enhanced Package allows you to do two way communication with your truck. This allows you to initiate specific tests like injector buzz tests and contribution tests as well as reading values for every sensor on the truck. It runs about $359 from diesel shops - look around for free shipping.

I got mine here: AutoEnginuity Scan Tool software - scroll down to the bottom and look for the SP03 package.

 

It could be the solenoid on the IPR valve - hard to test. Sometimes when the coils get weak, they quit working when they're warm. Let them cool down a little and they grab again.

Really need to get a scanner on it to measure IPR duty cycle and ICP sensor data when it dies and while you're trying to re-start. That's why having AE at home is nice.

 

ipr valva

Thanks for the insight. Something I didnt notice until I was asked by another mechanic was "is my check engine comeing on when the truck dies" and its not. It almost seems like I run out of fuel but without the sputtering . Its an immediate power loss and if I wait 20-30 minutes it will start and run for 2or 3 clicks and die again

 

You mean if the truck dies when you disconnect it, is it defective? No. The IPR valve's default position is wide open - meaning it won't let the HPOP build pressure. The IPR is like a finger in the pressure relief hole in the high pressure oil circuit. The PCM gives current to the IPR's solenoid closing the hole and allowing the correct amount of pressure to build. If you unplug it, the hole is wide open and the truck should die.

What you may have heard was unplugging the ICP sensor. This will cause the PCM to use a default value and the truck will run better if the ICP sensor was providing erroneous data.