2011 Toyota Corolla intermittent misfire while in gear & stopped a/c on No check engine light Solved 

I go through various procedures to find the intermittent misfire that is causing bucking or jolting of the vehicle while in gear but not while driving. also worse with a/c on. this happened all of a sudden on my 2011 Toyota corolla s. turned out to be a faulty coil pack that was intermittent. I show how to clean out throttle body, mass air flow sensor, scan vehicle and finally solve the issue