So this happens about once every 6 months now. No idea how to diagnose it. Cant take it to dealer because it only happens once, then its gone.

Randomly start to hear speakers popping at idle, lights start to dim and flicker, idle fluctuates, but only at idle. Once i start driving, its fine. then pull out of gear and its back. As soon as you shut it off, it wont start for 20 minutes or so. Start it back and everything is reset, and runs fine ...

here are some videos!

 

Have your alternator tested.

 

had two alternators on it. Same problem over the past two years now

 

Mine did something similar day before yesterday... got to looking and found a loose battery connection... have you checked that?

 

maybe a loose/bad ground

 

I had electrical problems also. Every extreme turn I took, the car shut off.... Everytime I would drop it from like 4th gear into neutral and roll into a place the car shut off.... It went on for like 3 months and I finally noticed that the power connection on the fuse box under the hood had came loose. Check all connections! I also had a fuse that the top of it cracked open and was screwing with the electrical system. Half the time it wouldn't start and the gauges would sweep 10 times when I turned the key.

 

crazy stuff... i will check the battery connections, but it wont happen again now for about 6 months lol. SO i will report back then and let you know :P

Thanks guys!

 

Add a secondary battery ground and check your positive terminal connection.