Surges when cold.
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is a BAAAD MAN
Joined: Apr 2005
Posts: 3,738
Likes: 5
From: Winston Salem NC
Surges when cold.
My 2001 F250 has been surging at light throttle until I drive it a few miles. I'm in a campground in La so when I leave for work I try to drive slow through the campground. I barely hit the peddle and it takes off, then pauses, repeat.
Runs great if I floor it or set the cruise, it's just the steady throttle that does it, idle rpm's are steady but seems a little rough (skaky) even when warm., fresh oil, new ICP, gets great fuel mileage and has great power. It's just the surging for about 5 miles, plugging it in at night doesn't seem to help only getting down to 50's at night here anyway.
Also I don't know if it has any relation, but i've noticed the ebpv hasn't kicked on in a while.
Ideas?
Runs great if I floor it or set the cruise, it's just the steady throttle that does it, idle rpm's are steady but seems a little rough (skaky) even when warm., fresh oil, new ICP, gets great fuel mileage and has great power. It's just the surging for about 5 miles, plugging it in at night doesn't seem to help only getting down to 50's at night here anyway.
Also I don't know if it has any relation, but i've noticed the ebpv hasn't kicked on in a while.
Ideas?
Thread Starter
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is a BAAAD MAN
Joined: Apr 2005
Posts: 3,738
Likes: 5
From: Winston Salem NC
Was thinking maybe tps, but it only does it when cold. I can replace it since I don't have the adjustable pedals for about $50, but After I drive it for a few miles it acts normal again.
Cargo Master
Joined: Nov 2005
Posts: 2,767
Likes: 58
From: East Tawas, MI
Completely normal, looking at the temps down there.
Give her a few more minutes to get warmed up.
See what happens.
Big dif in colder climates. My truck is the same year. Let it take a big bite out of the cold before you roll out.
Another key factor. Start running T6 synthetic in it if your not already. Whole different game.
Denny
Give her a few more minutes to get warmed up.
See what happens.
Big dif in colder climates. My truck is the same year. Let it take a big bite out of the cold before you roll out.
Another key factor. Start running T6 synthetic in it if your not already. Whole different game.
Denny
Thread Starter
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is a BAAAD MAN
Joined: Apr 2005
Posts: 3,738
Likes: 5
From: Winston Salem NC
Well I should say I have had the truck since it was new and just now started doing it and it was a chilly 66* here this morning lol.
I really wouldn't consider it a cold related problem but it only does it in the mornings, stay at work for 12 hours and it acts normal.
I have also been using T6 for quite a while, so that's probably not the problem. I cleaned the EBPV and tube a while back and tried to clean the sensor, I am thinking about replacing all that to see if it helps. The EBPV hasn't kicked in in a while, but maybe it's trying too lol. I'm keeping the truck till I win the lottery so I don't mind buying a sensor now and then
I really wouldn't consider it a cold related problem but it only does it in the mornings, stay at work for 12 hours and it acts normal.
I have also been using T6 for quite a while, so that's probably not the problem. I cleaned the EBPV and tube a while back and tried to clean the sensor, I am thinking about replacing all that to see if it helps. The EBPV hasn't kicked in in a while, but maybe it's trying too lol. I'm keeping the truck till I win the lottery so I don't mind buying a sensor now and then
Thread Starter
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is a BAAAD MAN
Joined: Apr 2005
Posts: 3,738
Likes: 5
From: Winston Salem NC
Well yesterday I cleaned the tps with some electronics cleaner and it drove smooth as butter! I won't declare it fixed until it gets really cold down here like in the 40's lol.
Think i'll unplug the ebpv too since it doesn't work anyway. Does that trip the ses?
Think i'll unplug the ebpv too since it doesn't work anyway. Does that trip the ses?
Hotshot
Joined: Dec 2006
Posts: 14,069
Likes: 17
From: Melbourne, Ky
No it shouldn't. Hasn't tripped mine in years.
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is a BAAAD MAN
Joined: Apr 2005
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From: Winston Salem NC
So I think i'm supposed to unplug at the pedestal right? Will it be obvious which one to unplug?
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Hotshot
Joined: Dec 2006
Posts: 14,069
Likes: 17
From: Melbourne, Ky
My 97 would surge on cold mornings, like 30 or below. I ran new ground wires from the batteries to the body and motor. After that, no more surge issues with that truck. That was a 97 though.
Cargo Master
Joined: Nov 2005
Posts: 2,767
Likes: 58
From: East Tawas, MI
J, staring at the engine from the radiator.
LOOK TO THE LOWER LEFT OF THE TURBO PEDESTAL. You'll see the solenoid plug. Carefully flip up the metal bale that holds it in place and pull it straight out.
(I would smear both connection ends with dielectric and bag the wiring loom and wire tie it in place away from heat in the event you sell it and want to reinstall.)
That simple.
No ses and no hard codes.
Denny
LOOK TO THE LOWER LEFT OF THE TURBO PEDESTAL. You'll see the solenoid plug. Carefully flip up the metal bale that holds it in place and pull it straight out.
(I would smear both connection ends with dielectric and bag the wiring loom and wire tie it in place away from heat in the event you sell it and want to reinstall.)
That simple.
No ses and no hard codes.
Denny
Thread Starter
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is a BAAAD MAN
Joined: Apr 2005
Posts: 3,738
Likes: 5
From: Winston Salem NC
J, staring at the engine from the radiator. LOOK TO THE LOWER LEFT OF THE TURBO PEDESTAL. You'll see the solenoid plug. Carefully flip up the metal bale that holds it in place and pull it straight out. (I would smear both connection ends with dielectric and bag the wiring loom and wire tie it in place away from heat in the event you sell it and want to reinstall.) That simple. No ses and no hard codes. Denny
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