NO, they have two completely different motors.
No. The Prelude has a B20A5 motor. The civic will have a D-series tranny. They will not interchange (B and D series parts do not interchange).
The starter of a 1990 Honda Civic is located on top of the transmission housing. There are two bolts mounting the starter to the transmission.
If the Prelude is an automatic, yes, you use automatic transmission fluid. If it's a manual, there's manual transmission fluid. As much as possible, purchase the manufacturer (Honda) branded transmission fluid.
You have to drop the transmission pan.
No it will not interchange. You need an Accord transmission from a 1990-1993.
yes
does a 1990 honda prelude 2.0 s.i have a pilot bearing
no, 2 different engine blocks, it wont bolt up
Many times a transmission will not function properly when the transmission fluid is low. Check the transmission fluid and fill to the full mark.
http://www.modifiedlife.com/1990-honda-prelude-car-radio-stereo-wiring-diagram/
No it will not.
No, the third and fourth generation are a different Chassis.