Coil pack resistanace testing for Dummies?

[uss2defiant]

I guess this is subjective?
Maybe a video would allow us to judge.

 

[tjkj2002]

My engine shake may be normal. The first time I felt it my first observation was something seems out of balance.....
Link:LOST JEEPS • View topic - why do 3.7L's have a rough idle?

That link explains it correctly being a narrow odd fire V6.It does run a counter balance where the "camshaft" should be but still will have a slight vibration.The 4.7 V8 is slightly smoother but not much as the more cylinders you have the more balanced naturally it becomes.


Worn motor mounts can increase that vibration also.

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What my motor mounts looked like at 68k.I'd highly recommend the OEM ones,yes they are 3-4 times as expensive but the aftermarket ones don't last.USAFCOP changed his also as his looked like mine when we did his SFA swap but he used the cheap aftermarket ones and they lasted 1 month before they tore again.

 

[LibertyTC]

I should have updated this thread with the Snap On Ultra misfire count information, but will now.
I guess it carries on from post 13 in this link: http://www.jeepkj.com/forum/f196/3-7-engine-slight-shake-57700/index2.html
Still unresolved. Have given up until a check engine light code proves which or all of the coil packs need an OEM replacement.

 

[Jcdes]

I know this is an old thread but my '05 3.7L is barely surviving idle and no codes at all so it's driving me crazy, If I unplug one of the coils and try to start it will generate a code for the coil so it is detecting if a coil is bad. I just pulled two of the coils #1 and #2 and both read 1.4 ohms between the two pins.

I pulled the spark plugs and I get 1-3-5 very very dark like if it was running rich on that side, then I get 2 pretty clean, 4 less clean and 6 dark but not as much as 1-3 or 5. Any ideas?