Rough Idle and Hard Shake any idea please - Ford Powerstroke Diesel Forum

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post #1 of 14 Old 04-19-2013, 12:51 PM Thread Starter
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Exclamation Rough Idle and Hard Shake any idea please

I have a 1997 PSD and just recently it was idling real bad and shaking whole truck hard and it was only when first started and only lasted around 1-2 mins and throws a check engine code but only when its running bad goes away when smooths out was doing it for about 3 days Truck has virtually no power also during this. well today it did it upon start up and went away as normal and I got to driving around and seen some buddies..me being a jack.. and with some egging from them I took off hard from a stoplight pulled great as normal for about 70-80 feet then it started doing the rough idle and shaking so I pulled over and shut truck off and restarted it was gone... for about a quarter mile then returned, now it does it nonstop. I was just wondering ideas before I started wasting money by guessing.. I wanna say glow plugs but im not a diesel mechanic. any help is greatly appreciated, hate when my trucks down. thank you
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post #2 of 14 Old 04-19-2013, 01:01 PM
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Uvch, start there


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post #3 of 14 Old 04-19-2013, 01:08 PM Thread Starter
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whats that?
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post #4 of 14 Old 04-19-2013, 01:10 PM Thread Starter
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oh I gotcha how do I know if its bad?
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post #5 of 14 Old 04-19-2013, 03:09 PM Thread Starter
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went and ran codes on it and it comes back p0171 which reads lean O2 on bank1 idk what it translates to for diesel
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post #6 of 14 Old 04-19-2013, 04:44 PM
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have it scaned. that will tell you if the injectors buzz good an if there bad.


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post #7 of 14 Old 04-19-2013, 08:18 PM
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A lot of times a lean code comes from an injector not operating properly. This can come from lot's of things such as the aforementioned UVCH. First place I'd look.
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post #8 of 14 Old 04-19-2013, 08:24 PM
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I have had that same symptom. It was fuel filter change time.

97 F350 7.3 super cab full bed dually
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post #9 of 14 Old 04-21-2013, 01:39 PM Thread Starter
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what is the part that bolts to the side of the fuel filter housings and the fuel pressure regulator screws in?
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post #10 of 14 Old 04-21-2013, 02:57 PM
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check the u.v.c.h electric connector on that side of motor,look for burn marks or anything discolored,it is the harness heading into valvecover,also i have put 1 oz of 2 stroke oil in with every gal. of fuel,im loving it,the old gal seems to just purr now,it just helps to lube the injectors,quiets em up a bit too
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