Do you have the ability to look at live data? We need to see what the o2 sensors are saying.
Multi cylinder misfires are set because there is not a consistent misfire on a given cylinder.
If we can look at the o2 sensor data we should be able to tell what is happening. It runs well when cold because it is in what is called open loop. This means it is looking at just the air flow sensor and temp data. It doesn't start looking at o2 sensor data until it is warmed up. If this is when it is misfiring then we need to see what the o2 sensors are telling the PCM.
Tuesday, August 27th, 2019 AT 4:56 PM