Running Rough below 1500 - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 11-02-2010, 11:17 AM Thread Starter
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Running Rough below 1500

i I have a newly rebuilt 7.3 that was running great, it started running rough and missing at lower than 1500 rpm and a constant check engine light. I had a spare IDM so I replaced that, and it did not help. I would rather not buy the diagnostics software right now, but without it or a programmer I can't read the codes to diagnose it. Do the symptoms that I am having tell any of you guys what might be wrong with it?

Thanks for any help you can give!
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post #2 of 5 Old 11-02-2010, 11:29 AM
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hows the fuel pressure?

Trucks and parts............
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post #3 of 5 Old 11-02-2010, 01:16 PM
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Hows your fuel filter?
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post #4 of 5 Old 11-02-2010, 01:34 PM
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also the fuel pressure regulator screen? seems like a blockage but then again wouldnt it be the other way around? good low end bad high end

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post #5 of 5 Old 11-02-2010, 01:58 PM Thread Starter
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The fuel filter has 500 miles on it and I don't have a fuel pressure gauge.
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