Loping? Surging? - Ford Powerstroke Diesel Forum
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  #1  
Old 12-12-2010, 01:24 PM
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Loping? Surging?

It is in the low teens here today and the truck has started up just fine, even when not plugged in. When I drive it after a short warmup it does not hold rpm very well. Feels like I am jockeying the throttle. Does not do it at idle, just trying to maintain 35mph it surges up and down about 100rpm.
After a long highway run to full operating temps, it is less noticeable.


The truck has 50K, Banks intercooler and a Banks 6 Gun, but it does it on any of the settings. AIS intake and stock exhaust.
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  #2  
Old 12-12-2010, 01:34 PM
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Fresh oil? More than likely just cause the oil is cold. That's why mine does it.
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Old 12-12-2010, 02:07 PM
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Well, the oil is fresh, less than 500 miles, but I switched from Motorcraft to Fleetguard? I think. anyway it is blue So that may make a difference.
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Old 12-16-2010, 02:22 AM
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Mine just did this today and wouldnt stop doing it until I drove on the freeway for 3-5 miles then it was fine... Wtf?
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Old 12-16-2010, 05:11 AM
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EBPV might be closed. I think it's when it's under 2000 RPMs it'll stay closed until it's warm. Then above 2000 it opens.
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