My 1991 LX 5.0 Coupe I installed the new Motocraft TFI Module from RockAuto and what does it mean when you connect the plug into the tfi module nice and tight then wiggle the wires and I get spark ? my car even started up and ran for 10 minutes. then i turned it off let the motor cool off and it would not start only crank i wiggled the wires coming out from the TFI plug and it fired right up. ran it again for 10 minutes then I hooked up my inova 3145 and with the koer i got codes 8, 12, 42...

TFI plug wiggle the wires and i get spark