Hpop replacement

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Jul 19, 2010 | 08:50 PM

#16

bismic

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Here is a tech time video talking about the IPR screen and the HPOP:

mms://multimedia.ford.com/seopts/Tech11_250k.wmv

Start at 22:30.

Also -

mms://multimedia.ford.com/fordstar/66920.wmv

Start at 39:45 and then at 1:10:43

Most of these videos are emphasizing NOT to replace the pump without proper evidence, but they do give some percentages that imply valid pump failures.

and:

mms://multimedia.ford.com/fordstar/61914.wmv

start around 12:40 and 17:30 and 43:50.

Jul 24, 2010 | 12:19 AM

#17

f350fixaliter

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From: Mechanicsburg PA

so i talked to ford today, truck should be out monday they said. They tested the hpop and it did spit its last bit of oil, also the ipr was pretty thrashed. They also informed me that the turbo had thick soot in it and should probably be torn down and cleaned up because the vanes may possibly be sticking. I went down took a look at it, and told them go ahead and clean it up. I figure I am already 1800 dollars in right now might as well make my truck in the best shape i can right now, right? Im just hoping when all is said in done she will last me a little bit here. I bought a dieselsite coolant filter and am looking at getting a river city diesel egr delete. Is river city diesel a good brand for egr deletes?

Jun 6, 2011 | 09:06 AM

#18

AndeyHall

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From: Anderson, SC

Quote:

Originally Posted by matty169

Why do you think they are both bad? Pull the ipr and see if the screen is still intact. I am betting it isnt. If not, put a ipr in and start the truck. And no, it wouldnt cause a single cylinder to misfire. When your truck died did you lift off the go pedal and it suddenly died?

Hey I know this is an old thread, but my truck is having stalling issues. While it's stalling, the truck isn't reading enough oil pressure. But the mechanic that drove it said that he kinda got on the gas a little bit and got it up to about 60mph and then let off the pedal real quick and it died. He said something about the HPOP may be bad, but what I'm wondering is which is more common to go out, the HPOP or the IPR?

Jun 6, 2011 | 10:19 AM

#19

smokersteve

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From: CA Sacramento

Quote:

Originally Posted by bismic

Matty if the IPR screen isn't intact, couldn't the HPOP be "shedding" some pieces and be causing the IPR screen to tear?

Has there been an update for the IPR? like the STC.

Jun 6, 2011 | 11:43 PM

#20

matty169

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IPR BY FAR..............

Quote:

Originally Posted by AndeyHall

IPR more than likely is what fails. But you need to drive it with a scan tool hooked up and see what you are losing when it dies. Command IPR closed and crank it while watching ICP pressure. What you see now? Unplug ICP and try to start it, if it is having starting problems. Watch IPR percentage and ICP pressure while cranking.

Jun 6, 2011 | 11:45 PM

#21

matty169

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No..........

Quote:

Originally Posted by smokersteve

Has there been an update for the IPR? like the STC.

I dont think so.

Jun 7, 2011 | 12:00 AM

#22

AndeyHall

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From: Anderson, SC

Quote:

Originally Posted by matty169

He hooked his scan tool up to it and said that the HPOP pressure is entirely too low. But does that make it a definite HPOP issue?

Jun 7, 2011 | 03:22 AM

#23

matty169

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HPOP pressure.....

Quote:

Originally Posted by AndeyHall

He hooked his scan tool up to it and said that the HPOP pressure is entirely too low. But does that make it a definite HPOP issue?

HPOP pressure can be low for several reasons. ICP faulty, IPR faulty, Too slow cranking, HPO leak from dummy plugs, branch tubes, stc fitting, etc..... LPOP faulty.....etc. Or maybe you have a bad HPOP, but I have YET to replace one that was bad. Doesnt mean it cant happen.
Command the IPR closed and monitor ICP pressure when cranking.
HPOP/IPR is displayed as a percentage on the IDS, ICP is a pressure reading. What is your mechanic actually looking at?