HPOP or ICP sensor

[badboy47]

I have an 03 F250 6.0. Lately it has been running rough when cold, sometimes when it has sat for more than a few days or fairly cold it will start and die. It has been doing that 2 to 3 times and then will stay running. Today driving to work started shuttering and died. Has not restarted since. I just changed the ICP sensor maybe 4 months ago, the old one had oil leaking out. Fuel filters are pretty new and oil change 130mi ago. FICM 47.5-48v icp 300psi while cranking. I know this 300psi is low, how do I know if it is the sensor or the HPOP?
Thanks

[dhanna6powerstroke]

Did you replace the ICP pigtail when you did the sensor?

[badboy47]

No I did not

[a2elvis]

Unplug the ICP sensor see if it starts.

IF that doesnt do it, the first step is to remove and inspect the IPR screen for damage or debris in the screen. If it looks perfect, then it may be a high pressure oil leak.

[dhanna6powerstroke]

Should replace pigtail too when oil is present. It soaks the inside of the connector.

[badboy47]

Originally Posted by a2elvis

Unplug the ICP sensor see if it starts.

IF that doesnt do it, the first step is to remove and inspect the IPR screen for damage or debris in the screen. If it looks perfect, then it may be a high pressure oil leak.

I will try that this evening.

Originally Posted by dhanna6powerstroke

Should replace pigtail too when oil is present. It soaks the inside of the connector.

I did clean the connector really good with electrical cleaner, but I will pick up another pigtail just to rule that out. If the ICP sensor is bad I will definetly replace sensor and pigtail together.

Thanks for the help so far, I will update with results.

[badboy47]

Ok unplugged the ICP sensor and tried to start. It did not start, but on the scan ICP was running 300psi with sensor plugged in and 1500psi with sensor unplugged. Is it showing higher pressure on the scan software just because the sensor is unplugged? Does this rule out the ICP sensor as the problem?

[a2elvis]

Unplugging verifies wiring and component. Could be a ipr issue or high pressure oil leak.

[TerraScaper]

The 1500 is the default pressure, hence the icp is unplugged and can't read pressure If I recall correctly, you should be getting more icp at cranking. Hopefully just the ipr. You could try compressed air in the icp to listen for a leak.


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[chf8500]

I just got mine up and going again with some excellent help from this board, same symptoms as yours exactly, I passed on my insight readings and got great advise. Mine was the IPR, screen was toast, changed it, put in an echlin, only one I could come up with over night, took about 2 hrs to swap it out with the slotted socket and solve my problem. These guys are good, heed what the SM techs tell you and ya won't go wrong. As an added note mine dumped after oil cooler change, so you can't be to carefull when you are inside the top of these motors