Forgot to mention no new codes are being thrown since this happened, also has blue spring, and high flow fuel banjo's which have a few thousand miles in with no problems

 

New ICP sensor has made it so now it only idles really choppy for about 30 seconds then stalls out. Any ideas?

 

Weak fuel pump maybe?

 

Have you checked for a stuck open EGR valve? If you don't have a delete kit on of coarse.


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Truck would idle fine for a while before i replaced the ICP in stock programming so it shouldn't be EGR. I use the SCT to disable the EGR and it ran no different. Fuel pressure is fine so pump should be fine. Would an IPR cause this?

 

Sounds like bad ipr valve to me

 

Is there anyway to test the IPR without using a diagnostic tool?

 

Jump battery voltage to it and you should hear it click as it shuts.

You would need a scan tool to change the duty cycle while watching ICP to verify it moves correctly.

 

was the plug for ICP oil soaked? if so replace it.

 

IPR running at idle should be roughly ~75% duty cycle. Shouldn't spike or fluctuate. ICP is input to the PCM and IPR is commanded by the PCM. IPR with no voltage applied is open, with voltage applied it closes to achieve proper HPO demand.

 

IPR duty cycle should only be 25-30% at idle

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ICP was not oil covered and having the ICP unplugged did not allow the truck to start. Replaced IPR today and still no difference. While replacing the IPR i did not notice any excess oil on any ov the tubing running from the intake to the valve covers so i would assume no HPOP leaks, at least on the drivers side. Truck had a long start on ether but idled fine for a few seconds then gradually lost power until it stalled.
I'm hammered, sorry for any sp. errors

 

Oil pressure reads fine on the gauge comes up to normal pressure while cranking, only codes i'm getting is p2285 and u0155, tried unplugging icp, ect sensor, ebp sensor none made it any better. Only luck i had was when i hit it with ether. i'm out of ideas

 

LOL That gauge is just a dummy gauge. It will go up even when you have IIRC 15 psi of oil pressure.

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As stated above the dash "gauges" are just fancy idiot lights. When you get yourself some REAL gauges you will see for yourself how USLESS those dash ones really are.


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Where is the ICP sensor located at? My 03 f250 6.0 is having similar problems. When i start my truck up it runs fine but once it warms up and I pull up to the stop light or when I come to a stop its wanting to push 1000 rpms and eventually goes down to what it's supposed to be. I thought it was the camshaft position sensor, replaced it but that wasn't it. Also the check engine light is on. Any ideas?