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have you pressure test the cooling system? if it doesnt hold pressure then theres a leak somewhere, maybe the head gasket, it could be as small as a hairline crack. or you can try running your cooling fan full time to see if it sustains better temps. also when you were adding new coolant was it cold coolant in a hot engine?
if your losing coolant then theres somthing here. either your clamps are not on tight enough, your water lines are old and from removing them and reusing them, its leaking from there (it may not look like a leak, but look around the radiator to see if you see any runs or dry coolant, if there is i bet its leaking from the clamps), or as i've said you got some sorta small crack on the head gasket. just small enough to change the cars stop and go ability to stay cool, but not bad enough to show you major issues. its better to assume the worst that is associated with a problem, so you can altest not fool yourself into thinking everythings fine. it will atlest help you prepare mentally for what kind of task your looking at.
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"driving safe doesn't mean driving slow"
91' mr2 with 3rd gen 3sge - SOLD
91' mr2 turbo - SOLD
96'paseo 40mpg DD!!!!!
90' corolla gts smallport engine FS... "levin front conversion" "current project" - BEAMS 3sge in the works
Last edited by rdyzz; 10-30-2011 at 09:03 PM.
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engine overheats
Linear Mode
