What is the best way to check the operation of a thermostat on 1991 Mazda MX-6?

To test the operation of a thermostat, it is best to remove it out of the engine. In case of the thermostat, it is more cost effective to replace it. Take out the thermostat and examine it to see whether it is corroded or not. Stock a new one in case any of the two are found.

Genuine 1991 Mazda MX-6 Thermostat

Engine Coolant Thermostat

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1991 Mazda MX-6 Thermostat Part Number: 8AK1-15-171-9U
$22.70 MSRP: $30.27
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Product Specifications
- Other Name: THERMOSTAT (W/O GASKET)
- Item Weight: 0.70 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 8AK1-15-171-9U
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following 1991 Mazda MX-6 Submodels:
- DX, GT, GT 4WS, LE, LX | 4 Cyl 2.2 L GAS

1991 Mazda MX-6 Thermostat Parts and Q&A

Q: What is the best way to check the operation of a thermostat on 1991 Mazda MX-6?
A: To test the operation of a thermostat, it is best to remove it out of the engine. In case of the thermostat, it is more cost effective to replace it. Take out the thermostat and examine it to see whether it is corroded or not. Stock a new one in case any of the two are found.