Loping? Surging? - Ford Powerstroke Diesel Forum
 
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post #1 of 5 Old 12-12-2010, 12:24 PM Thread Starter
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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.

12/98 E-99 CC Long Box 4WD Dually Lariat, Banks IC/Wastegate/6-Gun........Heated/Cooled Cupholders
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post #2 of 5 Old 12-12-2010, 12:34 PM
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Fresh oil? More than likely just cause the oil is cold. That's why mine does it.



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
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post #3 of 5 Old 12-12-2010, 01:07 PM Thread Starter
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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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12/98 E-99 CC Long Box 4WD Dually Lariat, Banks IC/Wastegate/6-Gun........Heated/Cooled Cupholders
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post #4 of 5 Old 12-16-2010, 01:22 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?

99 X-cab short bed, lifted, 325/60/18, gauges, ts 6pos, dynomax race muffler, diy intake, ddm 6000k hids, custom prerunner stuff...

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post #5 of 5 Old 12-16-2010, 04:11 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.



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
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