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Drain the radiator into a container. Remove the upper radiator hose from the thermostat housing at the engine. Remove the two bolts and remove the housing and thermostat. Clean both surfaces and install the new thermostat and seal and reinstall the housing. reinstall the radiator hose, tighten the clamps and refill with a 50/50 mixture of antifreeze and water.jd

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15y ago
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Q: Is there a diagram showing how to replace a thermostat on a 1986 Chevy Nova?
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