F250 6.0 idling up & down at stop! - Ford Powerstroke Diesel Forum
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Old 10-20-2013, 06:10 AM
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F250 6.0 idling up & down at stop!

I hope someone can tell me what is going on with my truck. It is a 2005, F250, FX4 with a 6.0 stock engine that has just rolled over 100000 miles. It started idling up & dropping when I would be at a stop with no hesitating at take off & ran well. I would have to make sure I had the brakes on or it would surge forward when this would happen. It is a intermitting problem but starting to happen more often. (I have changed the fuel filters thinking that might be the problem but it hasn't) This has been going on for about a month, it is now starting to do this riding down the road, you can see the RPM guage moving up and down irregular, just starting to do this. Not sure where to look first! Your help would be appreciated!
Thanks,
Mrbrez
2005 F250 FX4
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Old 10-20-2013, 06:42 AM
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ICP. .
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Old 10-20-2013, 08:11 AM
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I was having the same problem with my 05 f-250. For several months I went back and forth to a mechanic. The code i got was torque converter solenoid, however after changing the soledoid the problem was not fixed. I ended up borrowing a monitor from a friend and to my unhappy surprise i had 40 deg. delta on EOC/ECT. Back to the original problem, I had a ruptured EGR cooler causing the surging.
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Old 10-21-2013, 11:16 AM
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Does it smoke while it surges?
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Old 10-21-2013, 04:24 PM
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No smoke when this happens!
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Old 10-21-2013, 04:44 PM
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Sounds Like an ICP sensor. Pull The pigtail on Thr sensor and inspect for rubbing wires or oil on the connector. Replace the sensor if it has oil.
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Old 10-21-2013, 04:52 PM
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I had the same problem, changed the ICP connector pig tail and no more problem.
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