HELP Running very hot

[Chewy4000 at aol.com]

OK, I need some help here.
I have a 196k mi. sedan. New radiator recently with hoses, Thermal Stat 5Deg lower since was hot to begin with, and new aux pump.
On a 80 deg day the car runs fines with or without ac.
Now on a day like 90 deg or hotter I cant run my car with the ac without the gauge hanging right before the fist dot.

I changed the stat last week hoping it was that but nothing.

Anyone think the official Audi coolant with make a difference?

This sucks cause all this week here in NJ its over 90 deg


Chewy