kaya nga di ko nilagay yung aux fan sa possible causes kasi isuzu tfr ang vehicle, belt driven radiator fan yan. kung lalagyan mo ng aux fan di rin maso-solve ang problem nyan kasi di naman yung fan ang sira.
mas alam pala ni sir yebo, TS, do follow what he suggests, might help you more than what i suggested.
AFTER, if you still think na your ac system needs some aux fan help, walang masama lagyan, mas makakabuti pa nga.