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Old 12-29-2013, 07:06 PM
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Icp reading 0v

I have a buddy of mine that has an 04 ex with a 03 build date. The Icp reads 870 psi and the reads 0v all the time but the truck runs fine, even with the Icp disconnected. The Ipr reads normal around 25%and moves with more rpm. Does he have a wire problem. He replaced Icp sensor already and the only code is p2285 which is the Icp. Any suggestions? Thanks.
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Old 12-29-2013, 07:10 PM
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Is the ICP sensor under the turbo on his? If so, did he replace the pigtail also?
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Old 12-29-2013, 07:16 PM
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No did not replace the pigtail but it looks like that is the next step we cut back the insulation and checked for a wire break at the splice but no dice. Can I check for voltage at the plug? I think it is funny it drives fine with the Icp disconnected just throws a code. Thanks for the input.
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Old 12-29-2013, 07:22 PM
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Yes the icp is under the turbo.


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Old 12-29-2013, 07:22 PM
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Just wondering if it was under the turbo because that style was known for leaking through the sensor and soaking the pigtail connector with oil. Not sure if that would cause it but anything is possible.
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Old 12-29-2013, 08:25 PM
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When the pcm see's no signal at all from the ICP it uses a default set of values to start.
It lies to itself, if the HP oil system actually has oil pressure it will continue to run.

I have actually known of people who have run it that way for up to a month until they could get a new sensor.
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  #7  
Old 12-29-2013, 10:27 PM
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Quote:
Originally Posted by dannyboy950 View Post
When the pcm see's no signal at all from the ICP it uses a default set of values to start.
It lies to itself, if the HP oil system actually has oil pressure it will continue to run.

I have actually known of people who have run it that way for up to a month until they could get a new sensor.
I learned something new, sweet. Thanks


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Old 12-30-2013, 02:53 AM
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I do not recomend running like that but it will work. The icp trick was meant as field diagnostics trick
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Old 12-30-2013, 04:01 AM
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We'll we shot the wires from the icp plug to the egr sensor so we know that 2 wires are good from the plug, then we shot from the Icp to the splice going to the ECM, so electrically the pigtail is good but we did not shoot from the icp to the ECM. My thoughts it is he bought the replacement part from autozone, and it is not compatible or is junk. He said he was going to get a new motor craft part (Icp) with a harness. A side note though we checked tousley prices last night and the harness was $50. That is seriously over priced for just a plug with three pins and three foot of wire. I'm in the wrong line of work. Thanks guys.
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