Can a stuck valve cause an AOD to neutral out?
Can a stuck valve cause an AOD to neutral out? If the 3-4 shift valve is stuck, then the transmission will not shift into overdrive, but will not neutral out. The transmission will continue to pull in 3rd gear with no slippage. I have lost third and fourth gear in my AOD what could cause this? How do you get a proportioning valve unstuck? Apply the emergency brake and lift the hood. Unscrew, or unsnap the master cylinder cap and fill the master cylinder with brake fluid to the top limit line. Leave the cap off. Use a floor jack...