Why would the reservoir be full and the radiator low on fluid?
My 2009 Jeep Liberty wasn't throwing any heat. The answer I got here helped me find out why and the heat is going great. The radiator was low on fluid. Problem is the reservoir was full so I didn't bother checking the radiator at first. Why would the reservoir be full and the radiator so low on fluid that the heat quit?
Is the small return hose from the reservoir to the top of your radiator plugged or punctured?
I'd say the radiator cap is faulty. When the cap is sealed, as the engine cools it forms a vacuum that pulls the coolant back from the overflow bottle
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