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Old 08-06-2019, 12:35 PM
rwm514 rwm514 is offline
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Join Date: Sep 2010
Location: AZ
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No heat after coolant expansion replacement M54

So as the title says, I recently replaced my GF's coolant expansion tank. When I refilled the coolant, I noticed that it wouldn't take additional coolant once I turned on the heat inside the car and ran the fan on low. I tried running it to warm about 10 times to see if it would drop coolant level but it never did and still won't blow warm air. Any ideas?

Background: It had a slow leak from a crack in the expansion tank and actually ran hot on the gauge cluster. She shut it down immediately and had it towed to my house. I believe it was pretty low on coolant which caused the high temp. I also replaced the main thermostat, the thermostat in the bottom of the expansion tank, a new sensor in the tank and the other sensor in the lower radiator hose as well as a new cap on the tank.
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