Replaced ignition coil and spark plug and it still back firering

In replacing the sensor, hot wire is observed that it doesn't have any power on it. Need a solution

Noise constant but increases with speed. axle or bearing? Kind of a whump whump sound

Car is fine idling but overheats after only a few blocks of being driven. I am out of ideas, because the following parts have already been changed: water pump, thermostat, coolant overflow reservoir & cap, radiator

Last night was the second time it occurred in as many days. Luckily both times I was in my garage but this time I made a service call and had to pay for it to be closed. It closes like something is lodged in the door and turning the cylinder does not help. After waiting overnight an the repairman came he just reconnected the battery cables open the door and it closed. Please advice.

I disconnected the negative cable on my mkz today to replace plug wires, then realized i needed the upper intake plenum gaskets, stopped there called around and no one had them, had to be ordered. So i ordered them, put the cable back on and now bam, car wont start. The cluster is dead nothing lights up on any position of the key except run, and the airbag light comes only and stays lit. Checked battery connections, no corrosion both sides good and snug, even checked with a multimeter and then tried jumping it off with my truck. No change. The antitheft isnt lit, but went thru a few fixes with it(i.e. changed keys, locked all doors with windows up, unlocked with key in door, and tried a technique with changing keys in switch before trying to start. Nothing. Im at dead loss please help

My mkz started to shake after I exited the freeway when I noticed it marked low oil when I went to pull over it shut off now it won't start at all. What could it be?