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Drain radiator. Trace your lower radiator hose back to where it mounts to engine. Inside that housing is the thermostat. Remove lower radiator hose. Unbolt the housing (you'll need to pry it off because off the sealant used in installation) and pull out the thermostat. Note orientation of themostat inside housing. Clean off all traces of old gasket material. Make new gasket with RTV gasket goop, using a thin bead. Installation is reverse of removal.

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โˆ™ 2006-07-12 21:55:24
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Q: How do you change a thermostat in a 91 Toyota pickup?
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