thanks for the replies.

pagnaka aircon dun na umiinit mga 200 to 220 sa guage..

it suddenly stops when it reaches the hottest temp, then di na magstart of course kasi hi pressure na..

my uncle has put the same engine in a owner type jeep pero hindi nag ooverheat oviously kasi hindi sya aircon..but mine is diffrent, pero pareho lang kami binilhan ng makina..bit frustrated. i want to sell the pick up na. sakit ng ulo..

pero whats weird is that, the original V6 chevy engine has the same condition, overheat then stops thats why i decided to change it to diesel, pero ganun din..same banana..