I have a 2005 Volvo S40 T-5.

It has a Mis-Fire on Cylinders #2,3,4 and 5. The check engine light is on.

I checked the compression, it is good.

I replaced the ignition coils, spark plugs, and cleaned the Air Flow Meter.

Does anyone have a clue as to what this can be.

It is also intermittant but happens most of the time.

 

How about your wires? Or does your model have a coil on each plug?

 

Did this happen all at once? Could it be a lean misfire from a clogged fuel filter or maybe filling with E85 or maybe a bad fuel pressure regulator? (i.e. have you checked fuel pressure?)