4r70w OD problem
Thread Starter
|
New User
Joined: Jul 2009
Posts: 6
Likes: 0
4r70w OD problem
Good day everyone, new to the post here and usually do not require assistance repairing my vehicles but I have a 94 f-150 2wd with the 4r70w trans in it and something new is going on that I have never seen before. Tooling down the road the tranny will come out of overdrive and into 3rd and then shift right back into od again. There is no reason for this as I am not accelerating or pulling a hill or anything. Just hanging out at 1800 or 2000 r's and boom it happens. Od switch is working fine and no codes on the switch. Any thoughts out there? Trans has been serviced and shifts good. Thanks
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,714
Likes: 2,640
From: SE Florida
It's the Transmission Range Sensor (TRS.) That's the sensor on the driver's side of the trans where the shift cable attaches. It has a wiring harness plugged into it. Get a new one and install it. Yours is dying.
Thread Starter
|
New User
Joined: Jul 2009
Posts: 6
Likes: 0
Thank you for the info. I have had suggested it was the brake switch but did not feel that was the answer as I do not believe if you tap your brakes it should come out of OD. Plus it would deactivate the cruise control all the time. I will check the harness and connections and if all is good, change the sensor. Do you know if this is a dealer only part, or does after market sell them?
Thread
Thread Starter
Forum
Replies
Last Post
Al Tamm
Clutch, Transmission, Differential, Axle & Transfer Case
7
Oct 11, 2013 09:15 AM
joshuahaney
1987 - 1996 F150 & Larger F-Series Trucks
2
Dec 9, 2012 09:22 AM
rjsf150
1987 - 1996 F150 & Larger F-Series Trucks
2
Apr 26, 2012 07:57 AM
deere81
Clutch, Transmission, Differential, Axle & Transfer Case
1
Nov 21, 2009 08:23 AM
