if your car will not stay charged, try running radio lights and all sorts of things that plug in to ac plug and if your car dies you need a new alternator
The '89 prelude came in two types: the S and the Si. The Si's came with more options like four-wheel steering and fog lights. Most of the other differences are in the engine specs, like 1.8 vs 2.0...
Follow the lower radiator hose to it's end near the engine. Remove hose at this end and stick finger into thermostat housing. That thingy that you feel? Yeah, that's the thermostat. Note that if...
do this only after you have not driven the car for 3-4 hours to let the coolant drain and cool..look for the upper radiator hose on the block. there will be a dome shaped object with 3 brackets that...