Hello, My 2015 Infinity Qx60 lately has been randomly stalling, it has 103,000 miles and typically runs great.

I have installed a new battery and tested the alternator which continues to pass all test. 

while I'm driving it will suddenly lose RPMs and power, I can put it in neutral and rev the engine normally but when I put it in gear again, still no power.

 I pull over and shut the engine down, then it acts like a dead battery, so I wait awhile and it starts up normally and goes.

Any ideas?? 

If I could also add? I was rear ended recently, minor damage but my left side rear light assembly has no power since I got hit, could it be a wire or fuse? If Fuse, how do I find the correct fuse?