I need help on this one, my T-Bird sometimes doesnt start. After driving for a short distance sometimes the check engine light comes on and the tachometer stops working, then if I turn the car off it doesnt start till completely cold off. Ive taken the car to many mechs, change sensors and electrical wires and still have problem. By the way the engine has been recently replaced with a rebuilt. Any help would be appriciated.. Al L Sanchez

Have you taken it to a Ford service tech.