Holden Commodore VX to VY Simple Diagnosis and replacement of the DFI module. 6 Cylinder V6. 3.8ltr
1: Your car feels like it has a slight mid rev misfire or hesitation more noticeable on gentle hills at light throttle but generally disappears when you accelerate harder.
2: One coil does not fire at all. Remove leads on one coil at a time to see which one then try substituting another coil. (dont get zapped its High Voltage)
