Running Rough - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 12-01-2011, 07:02 PM Thread Starter Fanatic
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Running Rough

Hey guys,

I was just out driving around. For some reason the truck started to shake pretty bad when I tried to get above 50mph. I couldn't get above 50 because of traffic but when I was able I just WOT and it went away and never came back even when I slowed down to a lower speed slower then 50.
I'm running Vivians looney tune. What could have caused this? Also it did this only when in gear.
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post #2 of 2 Old 12-06-2011, 10:18 PM Fanatic
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I would do the usual system checks on the FICM voltages, check the ICP and connector, IPR for a clogged/torn screen. Do you have any gauges that allow real time monitoring of these values? If so, you should be able to diagnose HPO issues rather quickly.
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