DudeManYea
New Member
- Joined
- June 14, 2018
- Messages
- 1
- Reaction score
- 0
- Location
- WA
- City, State
- Lynnwood
- Year, Model & Trim Level
- 2008 Explorer XLT
I just flushed and replaced the filter my 2008 Explorer (95k miles), same 5r55s transmission with MaxLife Multi-Vehicle ATF. I noticed right away that the reverse gear was clunking into engagement. I did some research and found that the 5r55s has optimal shifting memory that you need to clear out. Basically disconnect the battery, connect the positive to negative for 5+ min. After I cleared the memory and drove 10+ miles, the transmission shifts buttery smooth in all gears. Also agree you need to make sure the fill level is correct, which is hard to do with these stupid sealed transmissions. May not solve your situation but it's worth a try.
Here a vid on clearing the memory:
Here a vid on clearing the memory: