Got code P0300 & P0301 when coming back from a long trip (4 + hours). I know the codes are cylinder misfire & cyinder misfire on #1. I got home cleared the code, checked the #1 cyinder (this is the cyinder on the front of the engine, passenger side), checked the plug, & checked the coil.

All items looked good. I re-started the car, let it idle for 10 minutes, no code. I have not had a chance to take it for a drive, looks like all is well.

1. Has anyone had this code come up?
2. Did I follow thru correctly on trying to find an issue?
3. Suggestions?

If it helps, my car has the M90 Roushcharger w/a custom tune. Thanks!!!

 

ttttt