I suggest having a full service tune up performed.

oil change (filter / gasket)

tranny fluid (filter / gasket)

spark plugs, wires, cap and rotor replaced

O2 sensors replaced

Have the thermostat replaced, radiator checked for leaks, and repalce both top and bottom radiator hoses.

Have a full diagonstics test performed as well to bring up any codes that will show other issues.

Let me know if you need further assistance.

carsandcomps,

Guru, Premium Expert @ Fixya.com