Welcome Visitor! Please take a few seconds and RustyDusty
Member
- Joined
- May 13, 2021
- Messages
- 105
- Reaction score
- 14
- Points
- 18
- Location
- California
- Vehicle Year
- 1987
- Make / Model
- Ford Ranger
- Transmission
- Automatic
I have a 4x4 1987 ford ranger with the 2.9 and A4LD auto transmission. When I'm giving it gas in 3rd and it shifts into 4th around 40 or so mph it will most often quickly drop back into 3rd then shift back into 4th and back to 3rd all while keeping the gas pedal in the same place. Its very harsh. I feel like it will do this indefinitely unless I either give it more gas and force it to stay in 3rd or let off the gas and keep it cruising around 35mph in 4th. Its as if theres a spot between 3rd and 4th gear that the truck has no idea which one to choose.
I've adjusted the bands, cleaned the valve body and checked all the valves moved properly and that the solenoid works, replaced the transmission filter and fluid, made sure the vacuum modulator holds vacuum as well as the vacuum line leading to it. I replaced the Throttle position sensor and the MAP sensor but was unable to find motorcraft version of those sensors so I can't say for sure if they're good parts. Things still on my suspect list are the transmission servos, governor and adjusting the kick down cable.
Anyone have any insight based on this description? Thanks!
I've adjusted the bands, cleaned the valve body and checked all the valves moved properly and that the solenoid works, replaced the transmission filter and fluid, made sure the vacuum modulator holds vacuum as well as the vacuum line leading to it. I replaced the Throttle position sensor and the MAP sensor but was unable to find motorcraft version of those sensors so I can't say for sure if they're good parts. Things still on my suspect list are the transmission servos, governor and adjusting the kick down cable.
Anyone have any insight based on this description? Thanks!
