testing coil pack

[big pacheco]

got a 2000 expy 4.6 developed a bad miss in the engine also the service engine light came on .how do i test the coil pack to see if it's good.i only have 55,000 miles and it's been running great before it started to miss. :shootout:

 

[big pacheco]

took truck to autozone had them read codes from computor.miss in cyl.#2 ,guy say's just need plugs.brought service manual.to test coil pack need to use a ohm meter across the 2 prongs.also to test injecters it state to just listen through a stethescope.let you know what i find on friday.

 

[big pacheco]

everything checked out fine.just needed plugs.runs fine now.