Re: How to test ignition coil pack
when my coil pack crapped out, i had a miss that you could really feel when the truck tried to downshift.... but it idled fine, in fact i would up driving around with it like that for over a month before it got really bad and FINALLY threw a code.... also wound up fouling out the one plug really bad.
i think i would start by pulling the plugs and looking to see if one looks like it's not fireing correctly, like it's got crap built up on it, ect.... that could help clue you in. have you done the plugs & wires recently?
2000 XLT 4X4, 3.0, Auto, regular cab - throttle cable mod, air silencer removed, K&N drop in filter, taylor thundervolt 8.2 plug wires, autolite sparkplugs, Accel coil pack, AVS Ventshades, Rampage LED tailgate light bar, BFGoodrich All Terrain T/A tires, Trail F/X toolbox, cruse control pod light fix, Cobra 19 ultra II CB, lil wil antenna, pioneer door speakers, expo woodgrain radio bezal, 06+ mirrors & tails, '01 powerdome hood. 90,000 miles and counting!