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Old 08-13-2013, 04:23 PM
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IPR info

I'm having ICP issues. I was looking at threads with same issues. I'm not seeing a sticky or a good description of where the IPR sensor is and what it takes to get it out. Is there a good thread or sticky. If not, would someone walk me through it?
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Old 08-13-2013, 05:07 PM
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The IPR valve is behind the turbo. Screws in the HPOP cover. To get it out- you can buy an IPR socket which makes life easy. If you have the socket- all you have to do is get a couple extentions and swivels heads and reach back there and unscrew it. Worse case you will have to remove the ficm for more room if you have big hands etc etc... If you don't have the IPR socket- a big adjustable wrench will work just fine, only problem is the turbo and turbo pedestal has to come out. Hope that helps.
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Old 08-13-2013, 05:17 PM
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Thanks. Is it pretty obvious what it is?
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Old 08-13-2013, 05:24 PM
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Let me get you some pictures right away

This is the IPR located below the turbo


This is a raw picture of the remote location, you can see the turbo inlet, the air filter and the FICM underneath it


I hope this helps.

Whats your problem anyways?
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Old 08-13-2013, 05:35 PM
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Thanks. That helps.
The problem is the typical "no start when hot". I set a PID on my CTS to watch the ICP. I can see the low pressure at like 350 until the viscosity comes back up
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Old 08-13-2013, 05:38 PM
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It's not a IPR problem, that's my guess.

You need to get the engine hot, then remove the valve covers while hot, put some air in the ICP and turn on the key engine off, you will hear the leak, possibly a dummy plug, or a stand-pipe
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Old 08-13-2013, 05:49 PM
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Yeah I know. Just figured I'd start simple and work toward that next.
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Old 08-13-2013, 05:51 PM
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Removing the IPR and changing it for a new one it's not the easy way, it's the expensive one
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Old 08-13-2013, 05:58 PM
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I was kinda hopeful it was an o-ring or crud on the screen.
How much work is it to get the valve covers off?
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Old 08-13-2013, 06:01 PM
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Well, i'm very experienced with the F-550 series, and i can do it pretty much fast.

Do you have A/C? because if you have, it's a pain in the **s.
You have to take the Glow Plug Module off, and get your wrenches in a very tight location... it will take you about 20mins per head, or more...

If you don't mind spitting some oil in the floor, juts take them off, and turn the engine on.
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