Car spits, sputters and then dies at driving temp around 80 deg. but only does this while in gear. In park it runs fine and does not act up at all. I've replaced the crank position sensor, it has new fuel pump and filter and fuel pressure regulator, plus new plugs. I've check the distrubtor and rotor and they both look fine.

When cold this car runs great, but once it gets up to normal running temp it will die. The primary heater fan temp switch is bad and needs replaced.