ReddyK
New Member
- Joined
- May 6, 2024
- Messages
- 3
- Reaction score
- 1
- City, State
- Midland, NC
- Year, Model & Trim Level
- 2000, Ford Ranger 2X4 3.0
I have a 2000 Ranger 4X2 3.0 with a 4R44E that wouldn't move in any gear except L1. So I took it out and rebuilt it. The only bad parts were forward clutch and the coast clutch frictions and one thrust bearing was toast. The rest of the transmission looked good except the servos were full of sludge. I disassembled and cleaned everything including the valve body and all the spool valves moved freely. Checked the resistance of all the solenoids and applied 12V to each and made sure they all clicked. 100% of the seals were replaced and a reman converter. I reused the pump and bands since they looked perfect. There are no DTCs and the OD light is off.
The truck has all the forward gears but no reverse. It clunks when putting it in reverse like it is going to work but it does not. I checked the line pressure as listed below.
Park Idle 135 psi WOT 160psi
Reverse Idle 180psi WOT 260PSI
Neutral Idle 135psi WOT 300psi
Drive Idle 135psi WOT 160psi
I have rechecked the reverse band and servo but I am at a loss as to what is wrong. Any suggestions would be very appreciated. I forgot to mention that it does have L1 engine braking, indicating that the low/reverse band is working. I happen to have a spare Digital Transmission Range Sensor and it made no difference. The brake lights work with both. I unplugged the transmission wiring harness and the REVERSE WORKS but not with the computer plugged in.
Here are the EPC pressures that i measured. The WOT pressures seem a little low in all the gears according to the chart below but, I am not sure if these pressures tell us anything that is a possibility to not having reverse.
Park Idle 55psi WOT 60psi
Reverse Idle 45psi WOT 80psi
Neutral Idle 60psi WOT 80psi
Drive Idle 50psi WOT 70psi
I have read nearly every thread that sounds like a similar problem but, I can't find any that are my exact problem. Any help would be appreciated.
Thank you,
Steve
The truck has all the forward gears but no reverse. It clunks when putting it in reverse like it is going to work but it does not. I checked the line pressure as listed below.
Park Idle 135 psi WOT 160psi
Reverse Idle 180psi WOT 260PSI
Neutral Idle 135psi WOT 300psi
Drive Idle 135psi WOT 160psi
I have rechecked the reverse band and servo but I am at a loss as to what is wrong. Any suggestions would be very appreciated. I forgot to mention that it does have L1 engine braking, indicating that the low/reverse band is working. I happen to have a spare Digital Transmission Range Sensor and it made no difference. The brake lights work with both. I unplugged the transmission wiring harness and the REVERSE WORKS but not with the computer plugged in.
Here are the EPC pressures that i measured. The WOT pressures seem a little low in all the gears according to the chart below but, I am not sure if these pressures tell us anything that is a possibility to not having reverse.
Park Idle 55psi WOT 60psi
Reverse Idle 45psi WOT 80psi
Neutral Idle 60psi WOT 80psi
Drive Idle 50psi WOT 70psi
I have read nearly every thread that sounds like a similar problem but, I can't find any that are my exact problem. Any help would be appreciated.
Thank you,
Steve