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4r70w slow to downshift


Bigmatthew86

Member
Firefighter
Joined
Sep 11, 2023
Messages
54
Reaction score
21
Points
8
Location
South Carolina
Vehicle Year
2001
Make / Model
Ford Ranger
Transmission
Automatic
I have a 01 ranger with the drivetrain out of a 96 Explorer 5.0. The truck runs & drives really well but it seems like it's slow to downshift. I was told the trans had a shift kit installed & it does seems like a j mod (I've had one before). Quick & firm shifts barks my 275/45s going into 2nd. When cruising in OD it seems to take a lot of throttle to get it to kickdown & seem long on top of that. I have a 00 Mountaineer with the same drivetrain & while it has very soft shifts it seems to downshift much quicker. Where should I be looking? I've read the explorer/truck valve bodies don't respond the same as the car valve bodies, but I've also read they do. Maybe I should pick up a mustang valve body & j mod it so I know exactly what I have & install some new solenoids while I'm in there? It is 100% drivable & really not that bad but it robs some of the sportiness of the truck in my opinion. Suggestions?
 


fastpakr

Forum Staff Member
TRS Event Staff
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Supporting Member
Article Contributor
U.S. Military - Veteran
V8 Engine Swap
TRS 20th Anniversary
TRS Event Participant
Joined
Aug 6, 2007
Messages
7,918
Reaction score
2,714
Points
113
Location
Roanoke, VA
Vehicle Year
1999
Make / Model
Ford
Engine Type
V8
Engine Size
5.0
Transmission
Automatic
2WD / 4WD
4WD
Tire Size
285/75-16
I have a 01 ranger with the drivetrain out of a 96 Explorer 5.0. The truck runs & drives really well but it seems like it's slow to downshift. I was told the trans had a shift kit installed & it does seems like a j mod (I've had one before). Quick & firm shifts barks my 275/45s going into 2nd. When cruising in OD it seems to take a lot of throttle to get it to kickdown & seem long on top of that. I have a 00 Mountaineer with the same drivetrain & while it has very soft shifts it seems to downshift much quicker. Where should I be looking? I've read the explorer/truck valve bodies don't respond the same as the car valve bodies, but I've also read they do. Maybe I should pick up a mustang valve body & j mod it so I know exactly what I have & install some new solenoids while I'm in there? It is 100% drivable & really not that bad but it robs some of the sportiness of the truck in my opinion. Suggestions?
Subscribing to this - I've had similar observations on the same setup in my '99. At anything but very high throttle input it's very hesitant to downshift. If you give it enough accelerator input, it will suddenly downshift (and feels like it may have shifted down two gears). Suddenly you're screaming along at 4500 rpm and it's pulling like a freight train. A middle ground would be really nice.
 

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