Overdrive off is blinking
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New User
Joined: Oct 2019
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Overdrive off is blinking
Used 4wd low today, truck seems to not want to get out of 2nd gear ! Thought it was getting stuck in 4wd. Went through the steps to get it out of 4wd. Looks to be in 2wd but still not going into overdrive. Overdrive off stops blinking for a mile or so then starts up again. Hoping it’s not a full transmission replacement/rebuild. Any ideas. Thanks in advance
Hotshot
Joined: Mar 2014
Posts: 10,750
Likes: 1,065
From: Douglassville, PA
You'll need to read the codes and not all code readers will do it. Guys who know what will and what won't will probably be along soon. Or you can take it to a garage that is properly equipped to read it.
Tuned
Joined: Dec 2018
Posts: 400
Likes: 68
From: Eastern shore, MD
If you're getting the blinking light there are codes stored...along with shifting issues = problem...I'd take it by a local independent transmission shop if you can drive it in...dealers/chains will want a fee just to read the codes...AAMCO may do free diagnostics come to think of it...but definitely need to get it somewhere as the chain parts store's can't read those codes and I'm not aware of any app that will either.
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New User
Joined: Oct 2019
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Thanks for the replys
Went to plug in to read codes and it is t even communicating! Took it to my diesel mechanic who specializes in Ford diesels, hope to find something out soon. If it is a transmission problem thinking of switching to a level 2 transmission from twisted diesel with a upgraded billet !! Since I tow big boats and I am thinking of getting new intake and sct tuner! What y’all thoughts?? Thanks for the info folks. I’ll keep y’all in the loop. Much appreciated for any and all info
New User
Joined: Oct 2016
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Went to plug in to read codes and it is t even communicating! Took it to my diesel mechanic who specializes in Ford diesels, hope to find something out soon. If it is a transmission problem thinking of switching to a level 2 transmission from twisted diesel with a upgraded billet !! Since I tow big boats and I am thinking of getting new intake and sct tuner! What y’all thoughts?? Thanks for the info folks. I’ll keep y’all in the loop. Much appreciated for any and all info
Lead Driver
Joined: Feb 2000
Posts: 5,373
Likes: 46
From: Palm Bay, Florida
Most likely the speed sensor on top of the rear end housing.
Replace with a Genuine MOTORCRAFT unit and spray clean the CONNECTOR with brake clean while you're at it.
Do this with the batteries disconnected.
This is a common problem with these trucks, I asked the same question YEARS ago, did mine and its been fine ever since.
Replace with a Genuine MOTORCRAFT unit and spray clean the CONNECTOR with brake clean while you're at it.
Do this with the batteries disconnected.
This is a common problem with these trucks, I asked the same question YEARS ago, did mine and its been fine ever since.
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Hotshot
Joined: Mar 2012
Posts: 10,590
Likes: 382
From: Texas
Time for a new transmission. That's NOT what Mark will say. It could mean a myriad of different things, but doesn't matter. Prepare for a trans rebuild. And don't change parts until you know the problem. I have had this problem three different times. Hence the reason I will never run an auto again. Even had one "built" but John Wood. First it was a converter and then it was clutch pack some or other. Either way, it will not be cheap. There, hope that clarifies. Sorry for putting words in Mark's mouth.
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Hotshot
Joined: Dec 2012
Posts: 11,267
Likes: 1,649
From: Las Cruces New Mexico
You should check for the dreaded OD shifter wires that get chaffed by the shifter tube on the steering colum its very common, and what you describe is normally the "symptoms" of that problem.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,704
Likes: 2,625
From: SE Florida
That is NOT what Mark would say. I have no idea if it needs a new transmission. Changing parts (especially expen$ive parts) without knowing what's wrong is almost always a very bad idea.
Hotshot
Joined: Mar 2012
Posts: 10,590
Likes: 382
From: Texas
What will you do if it still has the OD flashing with the new transmission? It is a very real possibility.In my opinion it is a waste of money to change parts without even knowing what code was stored. If this doesn't fix it, what part gets changed next? And then after that?That is NOT what Mark would say. I have no idea if it needs a new transmission. Changing parts (especially expen$ive parts) without knowing what's wrong is almost always a very bad idea.
Fleet Mechanic
Joined: Nov 2005
Posts: 1,508
Likes: 87
From: North Carolina, Raleigh
when you say its the speed sensor on "top of rear end housing" are you meaning the tail part of transmission housing or on the "rear end" where the differential is located..
Most likely the speed sensor on top of the rear end housing.
Replace with a Genuine MOTORCRAFT unit and spray clean the CONNECTOR with brake clean while you're at it.
Do this with the batteries disconnected.
This is a common problem with these trucks, I asked the same question YEARS ago, did mine and its been fine ever since.
Replace with a Genuine MOTORCRAFT unit and spray clean the CONNECTOR with brake clean while you're at it.
Do this with the batteries disconnected.
This is a common problem with these trucks, I asked the same question YEARS ago, did mine and its been fine ever since.
Lead Driver
Joined: Feb 2000
Posts: 5,373
Likes: 46
From: Palm Bay, Florida
On top of the rear diff housing.
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New User
Joined: Oct 2019
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P0782 code
The code pulled is p0782. Shift error between 2-3. Guessing it’s a transmission issue and not sensor
anyone get that code before and what was the outcome.??
782
anyone get that code before and what was the outcome.??
782