Thermostats

Where is the thermostat on a 1990 geo prizm?

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Wiki User
2006-08-10 03:25:35

Just follow your top radiator hose from the radiator to where it

attaches to the engine. This is your thermostat housing. Drain the

radiator, take the hose clamp loose, remove the two 10 mm nuts from

the housing and GENTLE tap the housing. This will expose the

thermostat to you. Make sure you get a new gasket along with the

new thermostat.


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