Known for its use in Jeep SUVs, the 4.0 was available from 1987 to 2006, eventually being phased out for the Chrysler ...
The 1987-90 YJ Wranglers launched the EFI era with throttle body injected 2.5L AMC four-cylinder engines. The legendary 4.2L inline sixes remained carbureted through 1990. In 1991, Chrysler switched ...