GoodMatt

So, I've finally decided to get the stage 3 (AWE)running correctly. It's been 2+ years and I've only put about 1500 miles on it because of various issues. I had the AWE cold start problem and then a random throttle cut issue...

Anyways, it's bee parked for 9 months and I'm ready to do some work.

No check engine light and it runs great most of the time, but will cut throttle at random times.

Codes:

17521 - Bank 1 - Sensor 1: Internal resistance too large (sporadic)

16884 - Random/Multiple Cylinder: Misfire detected

16885 - Cylinder 1 misfire detected

16886 - Cylinder 2 misfire detected

16887 - Cylinder 3 misfire detected

I've had a set of O2 sensors sitting around for 3 years, so I figure I would throw those in. I also have a new set of plugs that will go in at the same time.

Does the same control module fire cyl 1-3 or does one fire 1-3-5 and the other fires 2-4-6?

Any advice is appreciated...

-Matt

Nigel (no more S4)

There's 2 that fire each bank, 1-2-3 and 4-5-6. Misfires on the same bank usually mean an ICM failure.

papuc (MMI S4)

Matt your right, the POS closests to the front controls cylinder 4-6. try swapping them