Hi folks, happy new year.
looking for some advice from your experience on x types.
So I had misfire codes, 0352, 0354, 0356. I thought it strange that all 3 were faulty so I swapped coil pack from No 4 with No 5. thinking that if the coil pack was faulty it would cause No 5 to go down.
After clearing the codes I restarted the engine and now I have fault codes 0351, 0353, 0355. My question is how can a fault on one bank suddenly transfer to the other bank.
very strange

 

All 6 coil packs share a common B+ supply line, common ground and are individually driven out of the ECU.

What is common to coils 1, 3 and 5 and separated from 2, 4 and 6 is the coil pulse feedback signal to the ECU.
Bank 1 feedback pulses are consolidated on one single feedback wire to ECM, while bank 2 is consolidated on another feedback wire.

You may have by share fluke shifted a bad coil pack from position No.4 to No.5, thus moving the fault from one back to the other.
That coil pack might be dragging down the feedback pulses from the other two coil packs on whichever bank it is located on at the time.

 

thanks very much for the information. I will look into this and let you know what I find