coils

[jeeping99tj]

I was wonderin today truck started to run like crap. Its a 91 2.3 so i check the coils. if you unplug the exhaust side it dies and on the intake side i unpluged it and no change stays running but crappy. so i was thinkin that the intake side coil was bad. What do you guys think?

[PrerunningRanger]

Are your coils stock? or old? i would go ahead and upgrade anyways... truck did that it would run like crap.. i pulled a coil lose and still ran like crap... got new coilpacks and it fixed my problem.. not saying its your problem but just somthing to think about

[Jesshwarren]

I am not sure. Won't hurt to try a new coil.

[fordnut71]

if you go to the bone yard the same coil is used on the older 4.6 sohc motors

[D94R]

swap coils, if it changes sides of the head this will tell you if its coil related or not. then go from there.

[jeeping99tj]

OK ill give it a try thanks guys

[flyin]

The engine doesn't fire both plugs everytime. Sometimes it runs on one plug only. I don't remember the conditions though. I THINK idle and wot are one plug only and part throttle is dual plugs firing.

[jeeping99tj]

i think both coils are out on the truck. hooked a timing light up to it it adn on the intake side 3 isn t firin and exhaust side 1 isn t. so does that sound like my problem?

[Jesshwarren]

i think both coils are out on the truck. hooked a timing light up to it it adn on the intake side 3 isn t firin and exhaust side 1 isn t. so does that sound like my problem?


That would be a problem. New coils should do it.

[jeeping99tj]

ok thanks man