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Q:

during warm up,it pushes antifreeze into the ovrflow tank'temp gauge goes to hot on 2004 Mercury Mountaineer

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then wwhen the thermostat opens it sucks the antifreeze back in and it's fine untill the engines cold ,then it does it again ! New thewrmostat, antifeeze ,fushed hearter core engine & rad ,! IS water pump bad,rad pluged? Pressure checked holds 16 lbs
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