2001 powerstroke loosing power need help - Ford Powerstroke Diesel Forum
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Old 04-27-2009, 05:50 PM
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2001 powerstroke loosing power need help

I pulled off the highway and went to give it throttle and wouldn't do anything, it wouldn't even rev up at at all it would barely even idle. Some times when you let it idle it would lope real bad and make a chattering sound from the turbo any suggestions.
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Old 04-29-2009, 10:39 AM
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yeah - new turbo
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Old 04-29-2009, 04:15 PM
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Yeah but you shut the the truck off and then restart it will run fine for awhile then it will act up again.
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Old 04-29-2009, 04:16 PM
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CPS or throttle pedal.
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Old 04-29-2009, 04:49 PM
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The throttle pedal seems unlikely to cause chatter from the turbo, so does the CPS - crank positioning sensor.
I'm not familiar with the turbo making chatter, but if it really does, you will soon experience failure.
It does sound like an electrical type of problem like 2005F250 suggests, but in my mind doesn't explain the chatter from the turbo.

Let us know what it turns out to be.
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Old 04-29-2009, 07:46 PM
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It might not even be the turbo it might be my down pipe hitting the fire wall to cause I have a 4in. down pipe off the turbo. Thats how hard the motor chatters when it acts up.
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Old 04-30-2009, 06:26 AM
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OK - I get it. Sounds like the engine itself is bouncing around from running rough, causing the sounds.
Sensor problem seems the likely culprit, and I would suggest the CPS sensor first. Although they used to be expensive, prices have fallen, and I think I paid less than $20 last time.
They're easy to replace - 5 minutes or less.
Another good idea for you would of course be a code-reader. That would take the guess-work out of it, and they can be picked up at any auto-part store.
Super-Chips programmers also has a built in code-reader - that's another option, but all in all they're really useful to have for an engine with as many sensors as the Powerstroke.
There's always the possibility that you have more than one thing going on at the same time, and for that, the code-reader is a life-saver.
I run a SuperChips programmer on my Powerstroke, and I'm really happy with the power-gain, as well as the slight reduction in fuel consumption.

That the programmer also reads codes - and deletes them, if you want to, easily has had my unit pay for itself in a matter of a couple years, maybe less.
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Old 05-13-2009, 06:14 PM
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I changed the cps and it still is doin the same thing. I have used a couple different code readers and a code does not seem to pop up.
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Old 05-13-2009, 06:20 PM
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Or the injector harness under valve covers. See if you can get the codes read.
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Old 05-13-2009, 06:21 PM
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if you want to know what the problem is , if you will run a fuel pressure test , you will probably find the problem , i bet its low , when you cycle the key ,it builds pressure for a minute then falls off again, does this truck have high miles , if so , the tank pick up is clogged
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