02 f250 7.3l 4r100 crazy transmission issues..help!!
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Junior Member
Joined: Feb 2022
Posts: 1
02 f250 7.3l 4r100 crazy transmission issues..help!!
Where do i start... I have a 2002 f250 4x4 only owner. 169k on it.. had the trans rebuilt a year ago or less and was great until... I stopped for fuel and then drove off and was stuck in 3rd..now the tricky part is.. IT WILL SHIFT MANUALLY FROM 1..2.. AND DRIVE to 90mph but when u come to a stop won't down shift to first...so read codes TR sensor changed no fix.. soo now I have replaced...
ECM brand new
TR sensor
TR pig tail plug
Solenoid pack
Fluid and filter
In and out put sensors
line pressure test everything checked out
Please help if u have has this problem.. thanks in advance
ECM brand new
TR sensor
TR pig tail plug
Solenoid pack
Fluid and filter
In and out put sensors
line pressure test everything checked out
Please help if u have has this problem.. thanks in advance
Senior Member
Joined: Jun 2010
Posts: 16,607
Sometimes to prevent further damage to vehicle components, the computer will place the system in what might be called "Limp Mode". Vehicle performance is affected because the trans is only allowed to start moving in 3rd gear and not upshift , but allow the operator to get to a service facility.
Sometimes the vehicle needs to be moving to initiate this phase and will reset when the key is turned off and get set again once the vehicle starts moving.
Other times certain conditions can be affected by a problem that is present all the time and will not reset until repairs are made.
Unfortunately, this may require the use of a capable scan tool to provide some direction.
Sometimes the cost of replacing a lot of good parts is more than having the vehicle checked by a reputable service facility.
A windshield that has leaked over time may have caused a problem with water intrusion into the fuse panel /GEM module inside the vehicle. Worth looking into.
Sometimes the vehicle needs to be moving to initiate this phase and will reset when the key is turned off and get set again once the vehicle starts moving.
Other times certain conditions can be affected by a problem that is present all the time and will not reset until repairs are made.
Unfortunately, this may require the use of a capable scan tool to provide some direction.
Sometimes the cost of replacing a lot of good parts is more than having the vehicle checked by a reputable service facility.
A windshield that has leaked over time may have caused a problem with water intrusion into the fuse panel /GEM module inside the vehicle. Worth looking into.
Last edited by hanky; Feb 25, 2022 at 06:54 PM.
Junior Member
Joined: Mar 2022
Posts: 1
No answer for you other than the exact same thing that happened to me and I ended up having to get a rebuild. I used to own an 02 F250 with the 7.3 4x4 combo too except it was making a decent amount of power over stock so I kind of expected the trans to go out. Ended up just getting a remanned replacement from these guys https://reman-transmission.com/trans...es/?code=4R100 and it withheld the extra power for the 2 years I owned it afterward with no hiccups. 3rd gear going out is crazy common with the 4r100s
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