So got home car started up with no problems drove it around for like 10 mins and no issue, been sitting in the car for over an hour with no check engines or stalling, so I don't have a clue what happened

 

How many miles on the odometer?

 

104k, the car had a bad battery when all this mess happened, I replaced it and went out the next morning and the car was dead nothing when I turned the key no lights or anything, so I jumped the car and noticed my wife left a led cell phone charger plugged in so I wonder these issues where due to a low voltage on the new battery, and once it charged it back up all these issues went away.

 

Well went out this morning and started the car and the same issue is back check engine light flashes and the temp gauge pegs out and the car stalls, it's not throwing any codes this time.

 

Did you look at the actual coolant temperature as I suggested earlier ?

 

Yes coolant is perfect, right around 180-190.

 

Please check the coolant level at the rad cap, there shouldn’t be any air in there.

 

Checked that and it's all good, it's not over heating i think its something electrical, because the check engine light flashes once and the car stutters then picks back up and it repeats that until the temp gauge pegs and then goes back to normal and does it again then the car stalls out.

 

I tested the alternator with my scanner and it's reading it's over charging I think the max I saw was around 14.8 volts, also ran a test on the new battery and it's saying warning

 

Sounds like a corroded connection somewhere.You in coastal FL by any chance? Car even seen flooding?