high pressure oil sensor

[jeffro1302]

high pressure oil sensor what does it do and what problems happen when it starts going out

[BigBadLou]

Also called ICP (Injection Control Pressure) sensor. Tells the ECM what pressure is in the hydraulic oil rails. The more power you need, the higher the pressure usually rises (controlled by the ECM through the IPR).

If you suspect the sensor is bad, unplug it and start the truck. If it engine runs better, the ICP is likely the culprit.

Hope this helps.
Lou

[jeffro1302]

could it make it have a knock running at 2300 at 70 it will start knocking would it be doing that if the sensor is going bad

[powerstroke94]

would this being bad create a miss fire under load

[BigBadLou]

Did you try unplugging it? If the problem persists even with an unplugged ICP, it's not the ICP then.

You can also put a voltmeter on it to see what it reads. I'll have to find the voltage/pressure translation table, though.

Lou

[jeffro1302]

was put on a scanner and he said that the high pressure oil sensor was bad will that make it start knocking or missing at speeds

[centxdiesel]

Hey Lou, did you find the voltage/pressure translation table?

[szyd]

When mine went bad it caused the truck to buck while driving. No codes ever came up except for #4 high to low open. I did the 10K mod and it fixed the problem. So than i replaced the ICP and have not had a problem since.

[BigBadLou]

Originally Posted by centxdiesel

Hey Lou, did you find the voltage/pressure translation table?

Sorry, no luck.
If anybody's got a link to the table, can you please post it here?

Lou

[BigBadLou]

Strange, I googled it again and this time, I found it!
ECSD - Injection Control Pressure (ICP) Sensor - 1994-1997 Power Stroke FAQ

Scroll down to the last table, it will show the following values:
Voltage PSI
1.0V = 580
3.2V = 2520

It's pretty much a close-to-linear sensor so just interpolate if needed.

Hope this helps.
Lou