ICP sensor ?

[welove2drive]

Hey all and happy Thanksgiving.
Been having a problem with cold start and long clear up after it does start.
I have replaced the gpr, 8 glow plugs and the uvc wiring harnesses. I pulled the plug out of the ICP and found oil up in the plug. From what I have read this is a good indication that the ICP is dew for a change. Is this the case? If I plug the block heater in the cold start problem and rough running goes away so I just figured it was still a glow plug problem. Once the truck is up to temp it does just fine. Any input would be great. I have been going through a list of items to get this truck up to snuff having just purchased it.
Thanks for any help.

[blue99stroker]

yep time to change
the icp isnt sending correct information on oil pressure. which is vital at startup.

[welove2drive]

Thank you for the reply. I was hoping I was on the right track. Have to get one coming before it gives up completely.

[Eco Taxi]

I'm in the exact same boat - I've replaced both batteries, alternator, gpr, all glow plugs, starter, starter solenoid, fuel filter
.... Check your exhaust back pressure sensor I had to clean mine out but my ICP had oil on it too so that's next