Trans? Fuel? - Ford Powerstroke Diesel Forum
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Old 03-23-2014, 08:32 PM
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Trans? Fuel?

For the passed few months iv had a problem with my truck being sluggish and its shifting.
Iv posted a couple previous threads with no luck so ill try again.
When the truck is cold i can put the petal to the floor going up my driveway and itll only go about 10mph with little rpms. When it finaly makes it to the hwy (55mph) it slowly builds speed and rpms slowly build up to 2500-3000 rpms and stays there till warm. It acts as if its pulling a heavy load or something.
This truck is never abused and its frustrating.
I figured it was because of the cold weather but lately it doesnt get below 40-50 degrees at night so i dont think thats the problem anymore plus this truck doesnt get driven till about noon at the earliest (60-70 degrees) due to it not being my work truck.
Once the truck warms up its acts perfectly normal.
*little smoke at start up when cold
*doesnt run rough
*all fluids are good

Rodeo season is starting up so i need this truck to pull stock
Any ideas? thanks
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Old 03-23-2014, 08:49 PM
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I had the same problem with my Excursion back in Sep/Oct this past year. Everyone said "that's how Diesels are, they have to be warmed up first". That was crap, it was 70 degrees when it started happening and right after I filled the tank. It did take a while to clear out but I firmly believe it was in the fuel. If I'd have completed a fuel flush, filter changes I guess I could've fixed it earlier. Hope this helps, good luck.
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Old 03-23-2014, 09:02 PM
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I changed the fuel filter in the bowl a couple months back but still.
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Old 03-23-2014, 10:25 PM
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sounds like your ebpv valve malfunctioning.
try unplugging the sensor connector at the base of the turbo pedestal.
this should make it stay open.
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Old 03-24-2014, 07:02 PM
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If checked the ebpv before and it stays open. Unless it closes as soon as I get in the truck. Plus I know what it sounds like when its closed. So a stuck ebpv is unlikely.
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Old 03-24-2014, 07:12 PM
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well its free to check that's why I mentioned it
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Old 03-24-2014, 07:28 PM
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Is there any kind of sensor that has to do with both fuel pressure and shift points?
Or do you think the problems are even connected?
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Old 03-24-2014, 07:57 PM
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trans doesnt like to shift very quickly when the fluid is really cold.


your icp or ipr could possibly be bad.

pull the connector off the icp, if oils coming through change it.

a rebuilt ipr can be had for 80 bucks from dieselsite.
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Old 03-24-2014, 08:15 PM
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I'll try that. Iv thought of it before but didnt kno how to test for a bad one and didnt feel like buying a new one and waste the money. But since its not that cold out and the trans still doesn't shift fast do u think the trans fluid is bad? The truck has 220k on it. Idk if it gets old or anything but cud that be a problem?
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