Ohm rating on a good coil

[JordanD]

Hey, quick question, my truck seems like it is running a cylinder down, does anyone know the normal resistance on the secondary side on the coil pack. I know it is going to be in the k ohm range, but what range?? Oh, it is a 2001 ranger with the 4.0L sohc not sure if that helps any, if you need the engine vin code let me know.

 

[regnardrof39]

not sure but is it a muilti coil motor? if so test the other ones and compare.

 

[MAKG]

Yes, there are three coils. If you're one cylinder down, the only thing that could cause that is a broken secondary on that side. Then, its resistance will be infinite. Every other part of the coil is shared with one other cylinder halfway around the firing order.

 

[JordanD]

so it is a shared spark system?? Thank you so much you guys i would have never have thought about that, ya'll are life savers, will let you know if that is the problem.