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2001 F350 (50k miles). I was heading out last night pulling my 5th wheel, I switched off my overdrive (which I always do when pulling below 50mph) and about 10 miles in to the trip the transmission starts to cycle between gears. When I switch the overdrive on, everything seems fine (no cycling), switch it off and it starts cycling again. No engine light on or anything flashing, everything appears normal except this rapid cycling of gears when the overdrive is off.
Any ideas what might be causing it?
check that the O/D wiring isn't shorting out. there is a spot where the wires chafe going over the steering column
Quote:
Originally Posted by dothadamthang
After a Google of a few key words, I found this forum post.... My excursion was having the EXACT same problem and symptoms... So I decided to take apart the column to have a look...
After examining the wires that lead from the overdrive button, I notice a tiny spot that had rubbed away with exposed wires.... Apparently, this rubbing came from numerous shifting over the last couple years.... I simple wrapped the wire with electrical tape and repositioned the wire to avoid reoccurrence..
__________________
MM1 (SS) - 688 Class - First Flight Tough 2006 F-250 Lariat CC w/PSD <-- Build Thread
2012 Flex Limited <-- 17 mpg city, 27 mpg highway.
Took it in to the shop on Monday, they called me last night and said it looks like it could be the TC or a clutch or something. It is doing it with the OD on or off now and getting worse (by the time I got it to the shop it wouldn't go in to first gear at all).
They were going to pull the pan today and take a look and let me know later, but from what they were saying, sounds like it might be a rebuild.
So, next question is; what should I do with the rebuild? I've seen a couple of links for heavy duty parts and TC's, and a couple for ready built trannys (BTC and TCI etc.).
What would you guys suggest if I wanted to make the tranny bullet proof for towing?
My 2011 super duty, V-10 started having some shift problems going down grade,,the O/D button didn't want to disengage,,by pressing the button or stepping on the brake, it finally did. When I got home,,the trans was leaking fluid through the pan gasket. The dealler couldn't "duplicate" the problem and said the the trans was OK!!!,,yet it was doing funny things and leaked. No evidence of over heating,,the temp gauge was normal. Am planning a trip this weekend and expect the same to happen again,,what do I tell the next Ford dealer when I have it towed in??
My 2011 super duty, V-10 started having some shift problems going down grade,,the O/D button didn't want to disengage,,by pressing the button or stepping on the brake, it finally did. When I got home,,the trans was leaking fluid through the pan gasket. The dealler couldn't "duplicate" the problem and said the the trans was OK!!!,,yet it was doing funny things and leaked. No evidence of over heating,,the temp gauge was normal. Am planning a trip this weekend and expect the same to happen again,,what do I tell the next Ford dealer when I have it towed in??
How is this in any way related to the 4R100 topic you posted this in? If you want an answer you'll be MUCH more likely to get one if you start your own topic.
__________________ Mark Former Ford Automatic Transmission Engineer
“The good thing about science is that it's true whether or not you believe in it.” ― Neil deGrasse Tyson
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Leaky Tranny
