i would say check wires for loose connection or broken boot maybe....places like pep boys and autozone wires r kinda hit n miss on quality...when i had my taurusaurus it was running fine after major mods (just to keep it running not to increase performance
) then started mis/backfiring on the road sometimes....finally one day i stopped to get some slow food at carl's jr and when i started the car back up it was sounding like the engine was dying....runing really bad....i nursed it home and it cleared up...then the next day or so the problem back....i called the tow truck and the driver opened to hood and had me start the car...played with the wires and figured out that one was bad....saved me big dough did that guy....went and bought new plugs and wires and problem solved
