1998 Nissan Maxima. Rough running, code says failure on cylinder 2. I start the car, pull the plug to #2 coil and do not notice any change in idle. Pulling other plugs does result in a change. I swap #2 coil pack with #4 with the same result: removing #2 plug doesn’t alter the idle, removing #4 does.
This leads me to believe it’s not the coil but perhaps the harness isn’t providing power to the #2 coil.
Anyone know how much voltage I should be getting at the connector to the coil?