There are a number of reasons why your cruise wont work on a 1999 Ford Pu. Your wiring could be fried.
Any four liter engine should work in your 1994 Ford Ranger cup truck. The Ford four liter engine may need the motor mounts to be changed.
No they are engine specific
No.
yes 97-2002 will work
Yes
it should as long as you use the 92's computer and harness
The transfer case makes it 4x4 not the transmission. As long as the trannys are the same should work
Having water in the gas tank will work its way up to the carburetor.
I don't see why not, as long as it fits, it should work.
No. The F150 installation is longitudinal and the Freestar is not. That makes the manifolding incompatible.
The blend air door is probably broken.