My 2000 Cadillac Deville northstar motor is overheating and loosing coolant....

R

Richard S

New member
...I've changed thermostat twice? The 1st time I changed the thermostat and added coolant, it didn't overheat for approx. 2 weeks. Then I had to put another thermostat in(thought this one didnt work) and put the cooldex antifreeze in as manual requested & it didn't overheat for another 2 weeks. Now nothing is working and I can't drive it from frequent overheating, Can someone help me and let me know what could be wrong with my car??
 
Radiator caps are a couple of bucks. You can try that. Rare, but caps lose their sealing ability.

If you added windshield washer fluid to the cooling system, that causes suds and overflow.

More than likely a blocked radiator core. Ask a radiator shop the charge if you pull the radiator or the charge if they pull it for a pressure check.

If you smell antifreeze in the passenger compartment through the defrost, that points to head gasket. Have the cylinders compression checked. Blown head also pumps oil out your exhaust. Your tailpipe will be black instead of gray.

On a different car, the last option is what I paid for after the mechanic misdiagnosed the first three repairs and charged me anyway.
 
water pump radiator or blown head gasket id look for white lines on the radiator that would show leaks as the steam dries it stains the radiator or hoses or near the water pump if it blows white steam from exhaust you have bad head gasket
 
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