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Strange rough idle

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Old Jul 31, 2007 | 05:45 PM
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Strange rough idle

I drove my truck home last night and pulled into the driveway to an idle. As I sat for a bit the truck was running very rough at idle. I subsequently popped in a new CPS, with no change. I woke up this morning and drove it to a job, no problems with the idle. Not too sure what is going on with it. I am about to change my turbo, pedestal and all, with new boots. It runs killer on the road at speed, so I dont think I have an injector problem. I might try changing the fuel filter next. Any ideas?

Perhaps an IPR rebuild in order?
 
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Old Jul 31, 2007 | 06:26 PM
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yup fuel filter. Is the oil in good condition ie: changed recently. Check the HPO reservoir. Air filter clean? Do you have the 10 K mod that will do it also.
 
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Old Jul 31, 2007 | 06:58 PM
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Everything is good except perhaps the fuel filter. I will replace that and see how it runs. Thanks Neal.
 
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Old Jul 31, 2007 | 07:05 PM
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No prob I hope that does it. Keep us posted there are many things for this problem those come to mind first.
 
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Old Jul 31, 2007 | 08:38 PM
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HEY SUBER I just had this problem too and I had just did a full service , I changed my oil again and the problem went away same oil I use all the time too so go figure?
 
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Old Jul 31, 2007 | 08:44 PM
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Yeah, kinda weird isnt it. I just changed my oil a couple thousand miles ago, if that. I just replaced the fuel filter and it looked fairly dirty. We will see......................
 
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Old Jul 31, 2007 | 08:52 PM
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strange that my truck is doing this to. Its like its stumbles at idle. Weird..... Must be an inter-stellar PSD issue.

Cowboy Steve
 
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Old Jul 31, 2007 | 09:46 PM
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You think I am lieing try the oil change from my experience.
 
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Old Jul 31, 2007 | 09:50 PM
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I just got the oil changed 700 miles ago, lol. I think I got a bad batch of diesel from Wally World

Cowboy Steve
 
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Old Jul 31, 2007 | 10:01 PM
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Man you think I'm kiddin' but change the oil. It may surprise you.
 
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Old Jul 31, 2007 | 10:04 PM
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I dont think your kidding but i just paid $75 to have it changed, I'll ride it out til the next interval. And if the problem goes away because of it then I'll buy you an ice cream sandwhich. But im pretty sure it was a bad batch of diesel, Wally World has been known to supply sh1tty diesel now and then.

Cowboy Steve
 
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Old Jul 31, 2007 | 10:15 PM
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Steve I agree with you. Wally doesn't give diesel here but the gas sucks. Still I had the same probs with bad oil and at avery early point after the change.
 
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Old Aug 1, 2007 | 06:10 AM
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I still get that once and a while seems like it eventually works itself out like it was some bad diesel or a low grade.
 
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Old Aug 1, 2007 | 06:59 AM
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Originally Posted by powerstroked162
strange that my truck is doing this to. Its like its stumbles at idle. Weird..... Must be an inter-stellar PSD issue.

Cowboy Steve
Steve, you hit the nail on the head! At rpm my truck does not miss a hit, but at low idle it STUMBLES, the word that I have been searching for! It is just enough to be noticible to the well-tuned PSD ear. I made need therapy for this neurosis, but it really does bother me! LOL.

Well lets now sound off on the oil currently in our trucks!!

Delo 400
Wal-Mart
 
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Old Aug 1, 2007 | 07:26 AM
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Wonder if the HP x-over line from head to head would resolve your stumble. It seems to have made mine more responsive and doesn't stumble at first startup anymore. It goes immediately to good idle.
 
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