4r100 weird *****
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Freshman User
Joined: Jan 2013
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4r100 weird *****
Hey guys some weird stuff happend this morning i let my truck worm up for about 15 minutes drove it about 12 miles stoped to pick up my brother in law shut it off after a few minutes of waiting for him sat for about 15 minutes started it up ,waited for traffic pulled out and about 40 yards down the road my O/D shifter light started flashing and i had no speedo or OD so i pulled up to a stop shut off the truck let it set for a sec started it back up and everything was fine and have no idea what the problem was and was hoping one of you could help......its a 2000 f-350 dually with almost 250 thousand miles on it tranny fluid looks nice n red ,doesnt smell funny, and cant seem to notice any slipping .....just hoping someone could help me out....thanks guys
Lead Driver
Joined: Jul 2003
Posts: 7,404
Likes: 52
From: Wheatland, Mo
I had that same issue about 2 months after I bought my F350 years ago. Intermittent but the same issue.
I replaced the sensor on the rear diff and found a loose wire to the plug. Fixed that and all has been well for 7 yrs now.
I replaced the sensor on the rear diff and found a loose wire to the plug. Fixed that and all has been well for 7 yrs now.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,695
Likes: 2,616
From: SE Florida
The ONLY way to know what's wrong is to get the codes read. When the OD light flashed one or more codes were stored. You need those codes. The places that read codes free can't read Ford transmission codes. Either a good independent shop or a Ford dealer can read them for you.
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