Guys, Just to update you on my issue. The issue resolved after I installed a new radiator (2 funnels) Cobalt which is two times thicker than the original radiator. Now, my cuore running perfectly with AC cooling even on 40C. The temperature hardly goes above half way and normally stay at C (Cold).
Thanks for the advice on this group by someone way back a couple of years ago. After trying everything, (like waterpump and radiator cleaning, coolant change etc), that's the last thing I did and it worked like a charm!!
I would recommend everyone who is having cooling issue with AC to do following (ONLY)
1) Service your AC
2) Change Radiator to double funnel Cobalt radiator.
Thanks,
Faisal