2001 150 XR6 missing on even cylinders only

[JeepinGunGuy]

I have a real head scratcher with this new to me motor. Only the left or even 2,4,6 cylinders are misfiring intermittently. I performed the ohm and continuity test on all the CDM modules even though they can't cause issues on only one side of the motor. I just can't see anything in the diagnostic information that can cause what I'm seeing. Any tech's come across this?

 

[JeepinGunGuy]

I did some more digging last night and found that I have spark to all 6 plugs while running, however I can unplug # 2,4, and 6 CDM with no change in rpm or how it sounds while idling. If I unplug any of the odd side 1,3, or 5 and there is a significant drop in rpm if it doesn't just die. I performed a compression test, all cylinders but #6 have 125 psi #6 has 126 psi, spec is 110- 135 no more than 15 psi variance between cylinders, so about as good as it gets there. I swapped all the CDM's with no change. I'm at my wits end with this thing, about ready to pitch it overboard. Anybody have a clue what might be going on?

 

[flyingscott]

Does it have a shift switch?

 

[JeepinGunGuy]

Yes, no change when I bypassed it either.

 

[Dukedog]

might wanna take a look at tha icm..... it controls pretty much everything.

this pretty much indicates trigger and/or icm module......
"I swapped all the CDM's with no change."