Thermostat Failure
Symptoms
Engine overcools (gauge sits on L) or overheats. Temperature gauge may swing between L and normal erratically.
Cause
Thermostats stick open or closed with age. The factory thermostat is typically 82°C.
Fix
Replace the thermostat.
Cost: $20-40.
Install with the jiggle pin at 12 o'clock for proper air bleeding.
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