Sounds like an internal malfunction. Have it professionally serviced.
An automatic transmission on Ford Ranger holds three quarts of transmission fluid. That is after you drain all the old transmission fluid out.
That would be a version of the A4LD automatic transmission
For a 1994 Ford Ranger, the manufacturer's recommendation is DEXRON-MERCON automatic transmission fluid.
Remove the Ford Ranger automatic transmission drain plug. The drain plug is in the bottom of the transmission. Allow the oil to drain out and replace the plug. Fill the transmission with new transmission fluid.
manual or automatic transmission
The type of automatic transmission fluid to use is stamped on the automatic transmission fluid dipstick according to the 1997 Ford Ranger owners manual
is a 95 automatic 4cyl ford ranger transmission compatible with a 94 ranger 4cyl?
A4LD - 4 speed automatic
( Motorcraft MERCON V ) automatic transmission fluid according to the 1998 Ford Ranger owners manual
automatic
1991-1996 Ranger automatic transmissions use Mercon type automatic transmission fluid.
automatic or manual transmission ?