Wierd Issue when coming to a stop. - Ford Powerstroke Diesel Forum
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post #1 of 12 Old 06-04-2014, 04:46 PM Thread Starter
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Wierd Issue when coming to a stop.

The truck when I first start (first 2-5 seconds) idles rough and sounds really lopey and choppy or very fast inconsistent idle. But like mentioned only the first couple seconds after crank then evens out. Same thing happens when I am driving and I push in the clutch when coming to a stop or when stopped and the truck goes into idle, real rough then it will push through and even out a couple seconds later. Doesn't do this all the time mainly when starting the truck after it turns over and when coming to a quicker stop. Any ideas?

Truck has 175/80 PIS Injectors, rebuilt the turbo, and new Napa filter with K&N tubing as of March. Still running a Ford Racing clutch and Dual Mass Flywheel. Someone mention it could be the play in the dual mass flywheel?

Could it be the FPR filter or fuel related?

Thanks in advance!
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post #2 of 12 Old 06-04-2014, 05:25 PM
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Dual mass will clatter ALOT if its no good at an idle in neutral.


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post #3 of 12 Old 06-04-2014, 06:54 PM Thread Starter
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Originally Posted by Ricemiester View Post
Dual mass will clatter ALOT if its no good at an idle in neutral.


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Will in change the idle anyway or just make a clatter sound? Mine does the sometimes when I depress the clutch quick at higher RPMs when coming to a stop. Wondering if the idle thing is related or different, also is this something I should be concerned with and fix ASAP or run it until it fails type situation?
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post #4 of 12 Old 06-04-2014, 06:59 PM
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Wierd Issue when coming to a stop.

Nah dual mass shouldn't mess with the idle it will just clatter obnoxiously. You'll replace it long before it fails. It will get so bad you cant stand it. Do you have the latest and greatest cps?


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post #5 of 12 Old 06-04-2014, 07:11 PM Thread Starter
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No I do not, owned the truck since October of last year and didn't get to that yet? Wouldn't a bad CPS cause more more constant issues instead of at certain times. Truck has 103K on it now btw. What CPS would be worth looking into, how to change, and what are the symptoms of a bad one? Wouldn't the truck not start if that were the case.
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post #6 of 12 Old 06-05-2014, 08:09 AM
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Check your oil level. It could be low enough to starve the HPOP during a stopping event.

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post #7 of 12 Old 06-05-2014, 08:42 AM Thread Starter
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Quote:
Originally Posted by leojr View Post
Check your oil level. It could be low enough to starve the HPOP during a stopping event.

Don't ask me how I know...
Oil level is good, thanks for the suggestion. It does make me think though, the truck was running on dangerously low oil level when my oil pan had a hairline fracture that finally gave. Was only running about for a few minutes before I shut her down. What are the effects of a bad HPOP? Everything seems to be running fine other than that.
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post #8 of 12 Old 06-15-2014, 11:22 AM Thread Starter
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Bump...what could this be?
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post #9 of 12 Old 06-15-2014, 01:44 PM
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My truck and a buddy of mines truck do it to. I just learned to ignore it but I am curious to know what's causing it.

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post #10 of 12 Old 06-15-2014, 06:31 PM Thread Starter
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Do you still have a dual mass or have your or your friend went to single mass flywheel. I was told that could be the culprit but don't fully believe it..
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