Question about 1999 Buick Park Avenue

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Leaks radiator fluid at 90 elbow at top of engine

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Hello salt.....take your vehicle into any radiator or air conditioning shop and they will braze that leak for you in no time. Joe

Posted on Mar 27, 2011

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I need to know where the thermostat housing is so i can replace...


It is hard to say definitely without a make, model and year of car. But I would follow the large radiator hose to the engine block. If the hose connects to a cast iron elbow with two bolts holding it to the block smile you most likely found it. Drain the radiator fluid, unbolt the two bolts and you should see the thermostat. Clean the old gasket of the block and elbow and bolt the elbow and new thermostat and gasket to the block to the manufactures torque specs. I would buy some radiator flush if it has not been flushes for several years. Fill the radiator with the correct ratio of coolant and water replace the cap then run the engine for 15 minutes and look for leaks or listen for hissing from the leaks.

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