hpop problems need help?

[kidn1980]

what is was doing....would start up then idle for a minute or 2 and then idle down and shut off...

so i did some research and many people said hpop so i have replaced hpop,upgraded to stc,dummy plugs, standpipes,oil filters, unplugged icp nothing changed,plugged in nothing.

wel reinstalled and took a while and finally started but then did it again idles then dies so now what help please.

[Ryanbaker83]

Have you checked your IPR valve and has your push-to-connect fitting on the hpop been updated?

[howell_jd]

In order to avoid successful diagnosis by sequential replacement and the associated expense, I highly encourage the use of diagnostic tools. First a code reader from any auto parts store may be to pull diagnostic trouble codes (DTCs) that could direct your investigation. A better tool of course is AutoEnginuity or a Ford dealer's diagnostic tool. The dealer may charge for their diagnosis though. Try this website too:

Diesel Technician Society

Another possible issue could be the Fuel Injection Control Module (FICM). I would think that ordinarily, a fault would throw a DTC but you may check the voltage of the FICM easily enough to ensure you've got the proper voltage (after ensuring your batteries are good too of course...load testing each individually - isolated not in parallel). Here is a how-to from Swamps Diesel:

Fuel Press

Of course some gauges would help to measure the fuel pressure too.

Hope these ideas get you closer to a less expensive diagnosis!

Jonathan

[Ryanbaker83]

I agree with the scan tool. I bought AE and love it. I broke down the other day, hooked it up and watched the sensors. Turned out to be the IPR valve, replaced it and back on the road. Basically what i am saying is the scanner is a must have, saved me the cost of itself in one breakdown.