Did you drain the tank and put new gas in it?
On any car that's been sitting for a few years, a full tune up, timing belt, water pump, t.stat., and oil change should come first. Check all the rubber lines(coolant and vac.), and change any that are weathered, swollen, or hard. Change the oil, coolant flush, trans. and diff. service. I know it sounds like a lot, but it needs done.