sleepylegacy Posted May 11, 2009 Share Posted May 11, 2009 I dont know if the Tstat is going bad. cause the Tstat will go up then back down to normal did that once. the car has over heated 2 times already. but it has never over heated? cheeked the radiator and it was half empty. filled, burped. Dont know were the coolent went. no HG gone bad, No leaking of radiator, hose, or any were. any clue? 1990 legacy LS 249,000 miles. Quote Link to comment Share on other sites More sharing options...
idosubaru Posted May 11, 2009 Share Posted May 11, 2009 im' not following the details too well. if you're loosing coolant then you're loosing coolant. if you don't see it externally, it's leaking internally. Quote Link to comment Share on other sites More sharing options...
nipper Posted May 11, 2009 Share Posted May 11, 2009 I'm not following either, but at that mileage it could be the T-stat, cap and or radiator. More details please. nipper Quote Link to comment Share on other sites More sharing options...
Dr. RX Posted May 12, 2009 Share Posted May 12, 2009 From past experience, I would have the radiator checked. I glogged radiator will dump the coolant out the overflow. If it is the radiator, it would be a good time to get a new radiator cap also. Change your coolant to use only Subaru approved coolant, it is not cheap, but with help to keep the problem from coming back. Quote Link to comment Share on other sites More sharing options...
ericem Posted May 12, 2009 Share Posted May 12, 2009 I am betting on the plastic tanks on the rad being cracked. My car has a similar issue. Quote Link to comment Share on other sites More sharing options...
sleepylegacy Posted May 12, 2009 Author Share Posted May 12, 2009 ok, so I replaced the Radiator with a brand new one, metal w/ plastic side tanks from autozone(only place that had it stock) other wise I would of gotten it from performance radiator heard that theirs is all metal. wonder if it is true? so the water temp gauge goes UP for 10 min then back to normal temp, not the Tstat sorry about that. did that 2 times so far. I am not blowing white smoke out. (so it is an internal leak, very slow) replaced the heater core hoses and upper, lower radiator hoses. was gonna change the Tstat but didnt cause a prob. the over heating was cause the radiator cracked first time. Second time was cause the upper radiator hosed cracked. Overheated 6 months ago. replaced radiator, heater core hoses, upper and lower radiator hoses. BUT NOT TSAT. live in apt so cant really take the tsat out and put in hot water. Quote Link to comment Share on other sites More sharing options...
nipper Posted May 12, 2009 Share Posted May 12, 2009 Have you replaced the Radiator cap? Did you fill the cooling system with the car running? Did you wait for the T-stat to open and add more fluid? nipper Quote Link to comment Share on other sites More sharing options...
Dr. RX Posted May 13, 2009 Share Posted May 13, 2009 How well do you know the area (I see you live in Seattle). I would be willing to help provide a space and special tools if you need them. PM me if you are interested. Quote Link to comment Share on other sites More sharing options...
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