So my wife's P38 has suddenly developed a rough idle and is running poorly. I plugged my OBDII scanner (Innova 3100a) in a pulled the following info:

P0300 - random misfire detected

P0304 - cylinder 4 misfire detected

P0307 - cylinder 7 misfire detected

P1300 - catalyst damaging misfire multiple cylinders. Drive cycle C: Signal out of range - above maximum

P0442 - Evaporative Emission System leak detected (small leak)

Like I mentioned above, these problems manifested themselves overnight, there were no indications that there was trouble brewing.

So...million dollar question, "what's wrong?"

If I'm lucky, this is a "common" problem...chuckle...yeah right...so any ideas where to begin?

thanks in advance!
Brian