I have a b18c5 block with a b16 head in a 97 hatch. was getting hot before with the stock radiator so I put in on from an early accord that took up the hole front. thought it was working but is having the same problem as before... sits at normal running temp(right under half) then will go up to alittle over half. For no apparent reason it will drop suddenly back down to operating temp again. It started to heat up tonight so I pulled over and the top coolant line was hot (ofcoarse) and the lower was surprisingly cool. dunno am getting real frustrated- thanks

 

check thermostat

 

yea it was totally the wrong one got a new one-thanks