You can get a code reading at Autozone. The computer will remember the code, even if the CEL is off. Most common problem with the V6 Duratec is clogged EGR ports.Not a bad EGR valve, but the ports between the throttle body and the upper manifold are full of carbon. Not a bad job to fix, but verify with a fault code that is "EGR not opening" first. Take off air cleaner and throttle body, clean ports with a stiff wire or small screwdriver, vacuum out pieces. If the gasket is ruined between the throttle body and manifold, you will have to replace it. Order or get the gasket from a dealer, nobody stocks it.
Other common problem that causes an intermittent CEL is a bad oxygen sensor. There is two on the 95, one on each manifold. Good Luck.
