tested by making the fan direct as experiment
went to rwp n came back, no issues
then tried with push of 3k in each gear in local drive
then got full tuning done today,
throttle body, plugs changed, air filter n ac filters cleaned.
cng setting re done
pick got A one even with ac on
then floored it full time on way back with ac on, lots of kick downs because of slow drivers in fast lane, push of 4-5k with ac
MASHALLAH not even a slight movement of needle
now back to the issue, this experiment went well, so what could be the issue then, it cant be head in any case now, cant be radiator either, cant b cap either, what else