I have an 03 A6 4.2 that has a CEL on. It flashes when under load on the interstate or going up hills and the car shutters before downshifting. I took it to Advance and they told me I had multiple misfires on 5, 6, 7, and 8. I replaced the camshaft sensor and all spark plugs. This didn't work. That leave me a few other options. Coil packs or the ICM? Being that the problems on the right side of the motor I could assume it's not the coils. Any other ideas?

 

It could be an ICM issue. You can try taking the ICM out and turning it around and then re-install it to see if the problem jumps to the other side of the engine. If so, then you know it's your ICM.

 

Thanks. I'll try that.

 

Ok, so where is the ICM located, lol?

 

It's ok, I had to do some thinking myself for a second. Follow your coil pack wires to your ICM. There are two: bank one and bank two. Simply swap them around and see if the problem goes to the other side. If so, then you found your problem. I have a feeling that this is probably what you'll find.

 

Is there a picture showing where this is at? I cannot locate the ICM. I'm no mechanic, lol.