P0113 6 - Engine coolant temp ckt range
P0156 - Sensor circuit malf Bank 2 sensor 2
P0136 - Sensor circuit malf Bank 1 Sensor 2
P0302 - Cylinder 2 Misfire
P0303 - Cylinder 3 Misfire
P0300 Random/Multiple Misfire

I figure the sensor circuits are causing the misfires? engine coolant i dont know? How do I proceed?

 

if the coolant temp sensor is open it defaults it about 40 F..this will make your car run really rich and maybe enough to misfire

 

sorry -40F