RPM's are going nuts and Power loss - Ford Powerstroke Diesel Forum
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Old 06-17-2007, 04:40 PM
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RPM's are going nuts and Power loss

Hey all,

Wanted to share a problem I'm having and get some opinions. I register this as urgent because I'm headed for the dealer tomorrow AM (so any suggestions would be helpful) and I am supposed to go on a trip pulling my 5th wheel on Friday (but christ, the way the truck is acting, I'm afraid to go to the store).

I've got an '05 F-350 6.0, all stock. 26,000+ miles

I recently have been experiencing problems while sitting at stop lights and such where the RPM's start fluctuating between 500 - 1500 (the truck wants to GO when they fluctuate upwards, like power surges I've read about before). Yesterday this started happening again. When the light turned green, I hit the accelerator and NOTHING happened. I had to idle drive through the light (how embarrassing) and was able to pull over and after a minute or two the problem cleared and I was able to zoom away. It was as if something wasn't telling the engine to fire diesel into the cylinders or something. The worse part is this is an intermittent problem. Drove fine last night but then happened again today.

I've already had it at the dealer once and they cleaned the turbocharger (I was doubtful about that solution and now I know it didn't fix it). I also had them do my 30k maintenance to make sure it wasn't a fuel filter or something.

So I'm bringing it back into the dealer on Monday (assuming I don't stall out). The dealership seems reputable but this seems like looking for a needle in a haystack.

Any suggestions I can give to the mechanic. I've heard ICP sensor may be a culprit and willing to give that as a suggestion. I just hate to have to cancel a family vacation just a few days out. Thanks for any help.

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Old 06-21-2007, 08:30 PM
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jiggle the wires that go to the icp sensor while the engine is running...if it makes a difference, then there is your culprit
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