On a 1986 Toyota Tercel, the thermostat is located inside the engine’s thermostat housing, which sits on the engine block where the lower radiator hose connects.
Here’s the exact location:
🔧 Thermostat Location – 1986 Toyota Tercel
Follow the lower radiator hose from the radiator.
The hose leads directly to a metal housing on the engine.
The thermostat is inside this housing.
Remove the two bolts on the housing to access it.
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