Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSACURA2008TSX STANDARDREPAIR AND DIAGNOSISENGINE MECHANICALCOOLING SYSTEM (MECHANICAL)COOLING SYSTEMTHERMOSTAT TEST
2008 Acura TSX Standard
Thermostat Test
2008 Acura TSX StandardSECTION Thermostat Test
Replace the thermostat if it is in the stuck open position at room temperature.
To test a closed thermostat:
- Suspend the thermostat (A) in a container of water. Do not let the thermometer (B) touch the bottom of the hot container.
- Heat the water, and check the temperature with a thermometer. Check the temperature at where the thermostat first opens, and at where it is fully open.
- Measure the lift height of the thermostat when it is fully open.
Standard Thermostat Lift Height: Above 8.0 mm (0.31 in.)
Starts Opening: 169-176°F (76-80°C)
Fully Open: 194°F (90°C)
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.