Rough Idle and driving - Ford Powerstroke Diesel Forum
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Old 02-10-2012, 04:01 AM Rookie

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Rough Idle and driving

I've had my powerstroke for 3 years and have replaced EGR cooler(put in delete kit), head gaskets, FICM, oil cooler, radiator, and high pressure oil pump. It is a 2004 F-250 6.0 Crew Cab. For the longest time and it happens randomly my truck allowing it to idle for a while( doesn't matter if its hot or cold) will idle really rough and shake the truck. I can try to take off and it will barely go until I get enough boost from the turbo. After I accerate to the speed limit or a little higher it will clear up and run fine. Also keep in mind there is no smoke when it happens that I can see. And then other days it runs 100% fine with no problems. Any ideas? I thinking injector but I'm not sure. Thanks for any advice.
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Old 02-10-2012, 06:27 AM
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Sounds like it might be the oil you are running, synthetic? might be stiction, do a search on REV-X.

Try plugging the block heater in and see if that helps.

Check FICM voltage when the truck is cold in the morning, KOEO, cranking and engine running.
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6.0 problems, rough idle, rough running

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