Hey, everyone, I've got a 2012 Charger. Been having an engine check light for about a month.

The light blinks whenever I crank the car and the misfire can be felt pretty decently. It smells strongly of gas. There is also a weird whining noise, sounds like a cheap lawnmower. The light usually goes away around 40mph but it will come off and on during driving.
Last 2 days my car started overheating as well. A/C would lose power and wouldn't blow warm air. Burped the coolant today and it seemed to have helped somewhat.

Already changed spark plugs and coils, took it to the shop and they want me to replace the water pump despite no leaks under the car.

 

Start with replacing the O2 sensor and the ect sensor.