limp mode while towing - Ford Powerstroke Diesel Forum
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Old 07-09-2010, 06:01 PM
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limp mode while towing

I recently bought a 2005 F250 with about 80,000 miles on it, very clean one owner truck. I bought this to pull my camper with. On our first trip it was doing great until I started up a mild grade at about 70 MPH. It geared down and was doing good and then it upshifted and the wrench light came on. At this point of course it started to slow down and got down to about 60 MPH. I pulled off at the first opportunity and checked all the obvious stuff and everything looked good. I cranked it back up and the wrench indicator was out and it did fine until I ran up on another grade like that. It runs fine while I'm not towing but that's what I bought it for and by the way I was in the Tow Mode. If anybody has any ideas how about help me out.
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Old 07-09-2010, 06:04 PM
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Quote:
Originally Posted by RJ 6.0 View Post
I recently bought a 2005 F250 with about 80,000 miles on it, very clean one owner truck. I bought this to pull my camper with. On our first trip it was doing great until I started up a mild grade at about 70 MPH. It geared down and was doing good and then it upshifted and the wrench light came on. At this point of course it started to slow down and got down to about 60 MPH. I pulled off at the first opportunity and checked all the obvious stuff and everything looked good. I cranked it back up and the wrench indicator was out and it did fine until I ran up on another grade like that. It runs fine while I'm not towing but that's what I bought it for and by the way I was in the Tow Mode. If anybody has any ideas how about help me out.
Fluid levels good and everything?
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Old 07-09-2010, 06:09 PM
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What were your RPM's?
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Old 07-11-2010, 07:26 AM
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Welcome to the real world of Ford! Same thing here, so far I have have replaced the oil cooler, EGR valve and now the Ford Dealer says it could be a fuel problem or most likely rust in the turbo.
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Old 07-12-2010, 04:24 PM
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Search for my topics/threads. We have one going on this issue. Codes P0299 and P0234. Dirty turbo/ unison ring. Mine is coming apart this weekend.
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Old 07-12-2010, 05:39 PM
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Fluid levels were good and RPM's were 2800-3000. I appreciate the replys I'm just trying to get an idea of which direction to go.
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Old 07-12-2010, 06:29 PM
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Are you getting any DTC's? What is your ICP, ICP desired, and IPR duty cycle when you pull the hill. Also what gears are you running? 3.73's with oversized tires will cause you problems when towing up a grade...
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Old 07-13-2010, 02:39 PM
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Originally Posted by Evil Eye View Post
Are you getting any DTC's? What is your ICP, ICP desired, and IPR duty cycle when you pull the hill. Also what gears are you running? 3.73's with oversized tires will cause you problems when towing up a grade...
Just overload the guy with questions...

You need to buy a good code reader with advanced Ford software. Its a investment you won't regret.
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Old 07-13-2010, 02:58 PM
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Well, aren't they good questions?
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Old 07-13-2010, 05:57 PM
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They are good questions, just didn't know I was going to have to buy support equipment to go along with the truck. Took it to the dealership and they said it had no codes stored. If you guys got any recomendations on a good reader at a reasonable price I would appreciate it.
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