sundance
New Member
- Joined
- Aug 7, 2022
- Messages
- 11
- Reaction score
- 0
- Points
- 1
- Location
- Atlanta, GA
- Vehicle Year
- 1999
- Make / Model
- Mazda B3000
- Transmission
- Automatic
Good afternoon folks,
I have a 1999 B3000 2WD with a 4R44E transmission in it that is dying at 280000 miles (worn servo bores). I'm trying to find a low mileage replacement and my options get a lot better if I extend my search to include the 2001-2008 3.0l models which have the 5R44E.
I've done some research and my understanding is that the extra gear ratio in the 5R44E is only a programming thing and that the transmissions themselves are essentially identical. The only difference (as I understand it) is that the 5R44E has the speed sensor on the transmission, whereas on my 1999 it is on the differential.
Based on this, my understanding is:
(1) You can't put a 4R44E in a truck that originally had a 5R44E because the ECU will be looking for input from that sensor.
(2) You can, however put the 5R44E into a truck that originally had a 4R44E (my situation) and just not connect the speed sensor on the transmission.
(3) All 3.0l bellhousing bolt patterns are the same regardless of year or whether it is a 4R44E or 5R44E.
(4) 4X4 and 4X2 transmissions have different extension housings so a replacement for my truck would need to be 2WD
Again, this is my understanding based on what I've read, so any thoughts from anyone who has done it would be much appreciated.
Thanks
Chris
I have a 1999 B3000 2WD with a 4R44E transmission in it that is dying at 280000 miles (worn servo bores). I'm trying to find a low mileage replacement and my options get a lot better if I extend my search to include the 2001-2008 3.0l models which have the 5R44E.
I've done some research and my understanding is that the extra gear ratio in the 5R44E is only a programming thing and that the transmissions themselves are essentially identical. The only difference (as I understand it) is that the 5R44E has the speed sensor on the transmission, whereas on my 1999 it is on the differential.
Based on this, my understanding is:
(1) You can't put a 4R44E in a truck that originally had a 5R44E because the ECU will be looking for input from that sensor.
(2) You can, however put the 5R44E into a truck that originally had a 4R44E (my situation) and just not connect the speed sensor on the transmission.
(3) All 3.0l bellhousing bolt patterns are the same regardless of year or whether it is a 4R44E or 5R44E.
(4) 4X4 and 4X2 transmissions have different extension housings so a replacement for my truck would need to be 2WD
Again, this is my understanding based on what I've read, so any thoughts from anyone who has done it would be much appreciated.
Thanks
Chris