collapsed radiator hose

[konan83]

what can cause the upper radiator hose to callapsed, its a brand new hose. also its been running hot. 91 240sx

[blackrms13]

exactly like u mentioned, overheating

look into it before u blow the HG

[murda-c]

your return hose from the overflow might be clogged, or you may have a bad radiator cap, which doesn't relieve the vacuum in the system once it cools down.

the collapsed hose may be whats causing it to overheat.

[S14_Kouki]

Or the thermostat could be stuck closed

[Ceepo]

Go thru and check your thermostate, headgasket, and cooling system in general and see whats causing it to "run hot"...

[jorge1190]

my car did this not too long ago ended up being the thermostat.

[S14_Kouki]

Im telling you replace that thermostat