my mechanic said code said miss fire. changed plug and wires, fuel filter, air filter. a code for ect sensor also showed up but the mechanic said this would not cause a tap in motor. doesnt have time to get in it for last week because hes thinking its a lifter that came off or maybe the timing. he wants to go into motor. can it be the ect sensor or may be coilpack? really need my van back/

