I believe that the entire engine must be dissasembled...more or less the water pump is located behind the timing belt and the balance shaft belt housing...in order to change the pump alot of work must be done I suggest changing the timing belt and balance shaft belt while you are doing this...also removal of the AC compressor if applicable is probably going to happen so switching to r134A is a good idea also...I find many usefull facts for the dsms on this site look around I believe that it will be overall helpfull...http://members.shaw.ca/costall/1000Q/
There are several things that can cause your 1992 Mitsubishi Eclipse to overheat. A malfunctioning water pump or a blown head gasket should be the next things that are checked.
1,3,4,2
This will depend on the speeds that you are going at, but the 1992 mitsubishi eclipse does get up to 540 horse power, so has pretty powerful torque as well.
Buy a new regulator.
It is a pretty good job. Get a manual fron the parts store.
Remove the timing belt cover. There should be a pully that will ratched in and out to tighten and loosen the belt.
10mm
Two cams in a 1.8 ?
Yes, "A" 1994 mitsubishi eclipse transmission will fit a 1992 mitsubishi eclipse, IF and only IF it's the right one 6 bolt fits 6 bolt and a 7 bolt fits a 7 bolt. Make sure you know Fwd and Awd and if it's 5 speed =)
Replace it which is a major repair.
This website has a lot of wiring for many cars including '92 Eclipse. http://www.modifiedlife.com/1992-mitsubishi-eclipse-car-audio-wiring-diagram/
check for a leak more often then not it is the flex pipe.