loping sparatic idle????? - Ford Powerstroke Diesel Forum
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Old 01-30-2011, 05:10 PM
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loping sparatic idle?????

my truck sometimes decides to start loping like it has a cam in it with a massive lobe separation, much like a drag car, sometimes it will shut off randomly, and just doesnt run good durning this time. this issue doesnt seem to have a rhyme or reason to it. oil pressure stays normal, alternator is putting out 14.5v like normal. Does anyone have any insight as to where to start with this issue? Plz help.
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Old 01-31-2011, 11:24 AM
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I have the exact same problem with mine. I am also trying to figure out what is wrong
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Old 01-31-2011, 10:59 PM
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Is it after it has warmed up? Cause when its cold that plays a role in the eractic romps. There have been a few posts but mostly point at cold starts etc..
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Old 01-31-2011, 11:24 PM
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Sounds like the ICP sensor is going bad. Pull it and check for oil.
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Old 02-01-2011, 07:10 AM
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No not just when its cold, where is the icp sensor?
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Old 02-01-2011, 09:21 AM
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Driver's side oil rail towards to radiator. Here is a picture.

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Old 02-01-2011, 09:30 AM
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I think i put a new one in from ford when i built the motor, what do u mean pull it and check for oil?
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Old 02-01-2011, 09:53 AM
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The sensor is a two piece deal. Part of it is screwed into the oil rail, part of it clips into the part that is in the oil rail. Its comes out with the flip of a little clip, and you can see the connector. Inside the ICP sensor you can see 3 prongs, and it should be dry inside there, but usually when an ICP sensor is going bad, they start to leak, and you'll get some oil inside it. That will tell you if it needs replaced or not.
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