Variocam Issue?

[blue62]

Originally Posted by freserf

Just swapped coils 1, 2, 3 to 4, 5, 6 with same result. If the bank1 variocam solenoid is connected it will give P0341 when rpms go past 1300 to 1500 depending on temperature. The activation of the solenoid is pushing the camshaft position sensor numbers out of wack thereby giving the code.

Also the misfire stayed on cylinders 1, 2, 3 with the emissions warnings. When I disconnect bank1 variocam, no P0341 but still have misfires. No misfires if I clear the faults and keep rpm's above 1000.

There are no timing codes, just chain rattle when the variocam kicks in if I quickly demand throttle. Without the variocam connected I can throttle to about 3000 rpm before I here significant chain rattle.

So I need to find out what is causing the misfires first ...

New sparks plugs, coils seam to be working normally. Battery is new, but haven't checked the charging system voltage yet. I assume charging is ok since there is no battery light on the dash.

Just a WAG on my part:
I would say the cams on bank one are getting far enough out of time to cause the misfires.
Chain rattle says loose chains.
P0341 indirectly points to Cam timing issue.
And you have looked at and changed plugs and coil packs.
But I am just guessing.