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Old 03-21-2013, 10:47 AM

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Just had to have the oil cooler rebuilt on my 06. Got less than 50 miles from the mechanic's and it just died going 70 down the highway. They are saying it is the hpop. I know these are notorious for going bad but is there anyway they could have cause or accelerated the problem working on the oil cooler? Another mechanic that hasn't seen it said the ipr valve goes bad a lot when doing the oil cooler so it might be that. IF it is the HPOP, what else do you recommend doing in there while they're tearing into it? Not trying to rebuild the entire thing just trying to get all these problem childs fixed while i've got the labor into it anyways.
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Old 03-21-2013, 11:22 AM
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Any small amount of dirt or sealant can tear the screen and go through the IPR. That was a good observation, but it could be any number or other problems. You need a monitor or diagnostic tool like AE. Without numbers it is tough to give you any help.

If you are going to do the work yourself, just go buy the AE with Ford bundle. At the least, get a monitor (not an OBDII scan tool).
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Old 03-29-2013, 09:05 PM

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A wise man replaces all three of those little valves and the dummy plugs while to top is off the engine, $500 well spent, versus a lot more if you have to go back later and replace these things. Very few trucks get through life without having one of them fail. My IPR valve failed a couple of winters ago and the engine just stopped while going down the road at 50mph.
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Old 03-30-2013, 05:15 AM
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You probably need an IPR or at the very least a screen kit and clean your old one

the force of the oil through the IPR screen cannot handle any restrictions. Dirt from the reservoir under the oil cooler gets stuck on the screen and causes the force of the oil to puncture it. Anything the screen was holding back quickly lodges in the IPR

here is an IPR screen from a no start, no ICP. It's pretty obvious something passed through it

Last edited by sinner6.0L; 03-30-2013 at 05:20 AM.
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