IPR 5.7 ohms
Cargo Master
Joined: Mar 2007
Posts: 3,103
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From: AB/BC
I thought I heard him say that the fluid damper was supposed to help this. . .but I don't know. Either way neither of the two trucks I have phyically seen with exploded LPOP gears had fluid dampers on them. Both of them just sticks and spent lots of time over 4000 rpm.
Timmy
Timmy
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Posting Guru
Joined: Jan 2004
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Yes it sure does sound nice at 4000
Timmy
Cargo Master
Joined: Mar 2007
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From: AB/BC
.Mine was a dual mass and the clutch and fly wheel weighed well over a hundred pounds.
Senior User
Joined: May 2009
Posts: 311
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From: Clearwater
Ford has a SSM( special service message) related to replacing oil coolers or just removing them and replacing the screen underneath. You have to be ridiculously careful not to get anything into that reservoir because it goes straight to the pump and the ipr valve. Don't ever remove the screen, it takes very little damage and or debris on that valve to cause low high pressure oil. As stated before the fact that you have gone through that many pumps is suspect. If it scored the front timing cover at all I hope you replaced it, not just the cover for the base oil pump. What causes those iprs to get torn and or deformed is debris collecting on the screen and then pressure of the oil attempting to push the debris through the screen. Again you can't just test an ipr with voltage, you can apply 12 volts while its installed and fully field it so that its completed closed but this is not how the pcm controls it, it uses a digital signal off/on millions of times a second to create a duty cycle. What kind of pressure are you getting when it wont start?
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He replaced the cover when it was scored. The purpose of the test with voltage is to see if the damn thing moves at all. I understand there is a duty cycle and there is no voltage regulator that puts anywhere from 0 to 12 volts to the IPR. Its 12 volts or zero. . . and depending on how much pressure you want is how often the 12 volts is applied. However, the HPOP works fine, even if it has damage to it. I have no doubt that continuous operation of it will eventually lead to failure of the pump and other components down the line. . . However the pump didn't just immediately stop producing volume. The IPR shows no signs of operation. I just wonder how many people have fried coils. I just don't see that very often. I wonder if the continuous high demand for pressure and the heat that surrounds it was the culprit. Its hard to say. I'm going to check out that screen tomorrow and see just what it is contaminated with. Check back later.
Timmy
Timmy
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