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May 31, 2011 | 06:22 PM

mixerdrvr

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From: wildwood, mo.

Question

I am having issues and need to know if the icp voltage rises does that mean that I have hpo pressure?

Thanks
Frank

May 31, 2011 | 06:45 PM

dchamberlain

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From: Scio, OR

It should. I can't remember what ICP needs to get to before the engine will try to start, though. There is a graph from the 6.0L Bible that shows the IPC sensor voltage in relation Injector Control Pressure.

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May 31, 2011 | 06:53 PM

69cj

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From: Middle Tn.

You need 500 psi, icp to fire the engine.

May 31, 2011 | 06:53 PM

bismic

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Higher ICP voltage means higher pressure in the HP oil system.

Apprx 0.82V equals 500 psig. You should only reach 4000 psig at maximum engine load, but seeing high pressures in the HPO system is not really a bad thing (although I guess it is possible to have it "fail high" - just haven't heard of it much).

Thanks for the chart David.

May 31, 2011 | 06:55 PM

texans

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From: Abilene, Texas

you need 500 psi for the truck to start. I beleave thats something like .89 volts. can't remember for sure though.

May 31, 2011 | 06:59 PM

69cj

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From: Middle Tn.

Can't tell you about the voltage. My Scangauge is set to press. Once the truck starts it's a roller coaster ride depnding on throttle position. 500 psi is the magic number for starting.