Idles crappy sometimes and then goes away - Ford Powerstroke Diesel Forum
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post #1 of 29 Old 04-24-2013, 06:34 AM Thread Starter
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Idles crappy sometimes and then goes away

So I'm having problems... I'm wondering if it's stiction or an injector problem. It idles crappy when I give it gas it runs ok till idle again... Also when it shifts from to over drive on the highway and the rpms drop it runs crappy and shakes... Doesn't have any codes or anything.

Do you guys think it's stiction?

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post #2 of 29 Old 04-24-2013, 06:55 AM
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Originally Posted by tylerw13 View Post
So I'm having problems... I'm wondering if it's stiction or an injector problem. It idles crappy when I give it gas it runs ok till idle again... Also when it shifts from to over drive on the highway and the rpms drop it runs crappy and shakes... Doesn't have any codes or anything.

Do you guys think it's stiction?

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How does it runs in the morning at first start up? or is it doing it after it gets warm ?
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post #3 of 29 Old 04-24-2013, 07:07 AM Thread Starter
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It seems like it's totally intermittent. This morning it started just fine and ran fine till it warmed up to about 145. The other day it was when I first started it up... It's very noticeable not subtle at all

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post #4 of 29 Old 04-24-2013, 07:20 AM
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I would start off by cleaning your EGR valve.


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post #5 of 29 Old 04-24-2013, 07:22 AM Thread Starter
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I'll try it but my egr valve is turned off and has been for some time... I'll give it a try though

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post #6 of 29 Old 04-24-2013, 07:38 AM
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If its turned off then most likely that's not the problem. I'm assuming you have a tune installed so I would try putting it back to stock.


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post #7 of 29 Old 04-24-2013, 07:40 AM
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it could be your IPR screen with some debris in it,leaving the valve stuck open needs cleaning or replaced, or electrical in the harness,connectors, have you tried unpluging your ICP and see how it reacts ?? How long is been acting up ??
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post #8 of 29 Old 04-24-2013, 08:14 AM Thread Starter
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I have put it back to stock and it still does it. Maybe I'll pull the sensor and clean it and see if that helps. Unplugging it does what exactly?

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post #9 of 29 Old 04-24-2013, 08:28 AM
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unpluging your icp and the truck smooths out, your icp sensor is bad.....
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post #10 of 29 Old 04-24-2013, 11:30 AM Thread Starter
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is there an easy way of un plugging it or changing that out?? lolol everything ive seen makes it look like a pita

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