ICP Sensor
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ICP Sensor
I have a 2003 f250 Diesle 6.0 and the ICP Sensor is going out or has gone out. Can anyone tell me if this will cause the truck to not turn over? I checked the battery and all lights and guages work when key is turned over. Just wont turn over.
Logistics Pro
Joined: Mar 2002
Posts: 3,881
Likes: 84
From: Wake Forest, NC
Yes, if the truck doesn't see 500 psi of ICP. If the sensor is failing low, it will keep it from activating the injectors. In theory unplugging the sensor will cause it to be bypassed, but I've tried this and it didn't work. The sensor is difficult to access on the 6.0.
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Very helpful - Thank you! I ran the diagnostic test and it pointed to the ICP. Truck was running fine except the check engine light was on. Friday night started running ruff. Next time tried to start it and got nothing. I think I will go ahead and replace the sensor - hope it is the only thing wrong-heard it is not so easy but going to give it a whirl.
Thanks again!
Thanks again!
Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
Welcome to FTE. Unplugging the ICP is supposed to make the PCM infer default values, but if Chris has had problems making the computer infer things, I'd listen to him.
Just to be clear though. What do you mean by not turning over? If the engine spins but won't start, it may be an ICP issue. If you turn the key to start and nothing happens, or you hear some clicking noises, that's not ICP related.
Just to be clear though. What do you mean by not turning over? If the engine spins but won't start, it may be an ICP issue. If you turn the key to start and nothing happens, or you hear some clicking noises, that's not ICP related.
FTE Legend
Joined: Jan 2006
Posts: 37,918
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From: Princeton, BC
I would check this first. I don't know that a bad sensor would stop it from turning over. I recently had a non turnover situation and my connections didn't look all that bad. I thought I was going to have to replace my batteries. I cleaned the connections, made sure the levels were correct in the batteries. That was my problem. Turns over like crazy now.
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Logistics Pro
Joined: Mar 2002
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From: Wake Forest, NC
Keep in mind that the High Pressure Oil Pump HPOP has issues on the 6.0. There is a tube inside that can crack or melt that (i think) is what feeds low pressure oil to the HPOP. If this is sucking air, or leaking you could be having ICP troubles. I've never worked on this problem personally as it was beyond what I had facilities to do, but have seen the symptoms. It will give you an ICP higher or lower than expected code because the pump can't keep up and the Injection pressure regulator IPR is over 80% commanded.
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