you didn't say which engine- 22re (4cyl) or 3vze (v6)?
1) valve cover gasket(s)?
2)
http://www.ncttora.com/fsm/1990-1995...e/moonroof.pdf
3) follow 4Crawler for this as well as the alternator
4) take it to the shop- the ABS has testing and repair procedures most people cannot easily do at home
5) likely the thermostat as mentioned above. however you didn't say if yours is an automatic or stickshift...?
6) do a basic tune up- plugs, wires, cap, rotor, etc., maybe the fuel filter. also, could be related to #5