A couple of my engine coil mounting bolts got screwed up to the point in which they are not holding the engine coils down effectively. Does anyone have a manual that can tell me what part number those are or where to get them? I do know that it's not the threads on the engine that are messed up...
Problem Still Fixed.
Well, either way it fixed the problem and it hasn't reoccurred yet so I would think it is safe to say I got unlucky with a badly constructed engine coil.
I have been recording my car's gas mileage using aCar (mobile app) and my mpg range is 18-47 with and average of 28.7mpg. I can see the car running real well like that but this was a one way trip right? maybe a slight grade on most of the road made the car run super well?
2001 Toyota Corolla - 177,000 miles
My codes when reading the engine codes are
P0304 - 4th Cylinder Misfire
P0420 - Catalyst System Failure (Had this before the current problem)
P0446 - EVAP System Vent Control Circuit
When idling or in drive, the engine shakes and I can hear the engine...