Hello!
About 11 weeks ago my car's CEL lit up. I brought it to the dealer and they said it was a P0303 code (Cyl. 3 misfire). They swapped the coil and sparkplug on cyl 3 only. Now, 3300 miles and 11 weeks later my CEL lit up on the commute home. I had bought a elmscan usb, so I checked the...