will a bad heater core make your car idle up on its on an cut off ?

1997 BUICK PARK AVENUE
170,890 MILES
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TONY90420
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yesterday it drove fine after i put new intake gasket and vale cover gaskets and a tune up. I would say driving for like 30 mins or so the front window kept fogging up then i notice a puddle of coolant on the passenger side floor . i got back home started my back up an it idled up on its on an cut off but starts right up everytime.oh yea and i was smelling burnt coolant
Mar 3, 2012 at 8:45 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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