How to remove and install a thermostat on 1991 Volvo 780?

To change the thermostat, disconnect the negative battery cable and drain the cooling system. Remove the coolant hose and bolts and thermostat housing. Clean surfaces, replace gasket and thermostat and reassemble. Refill the cooling system, reconnect the battery, start the engine, bleed the system, and look for leaks.

Genuine 1991 Volvo 780 Thermostat

Engine Coolant Thermostat

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2 Thermostats found

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1991 Volvo 780 Thermostat Part Number: 273307
$26.45 MSRP: $38.71
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Product Specifications
- Other Name: Thermostat Kit 2512; Thermostat
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 273307
- Warranty: This genuine part is guaranteed by Volvo's factory warranty.
Fits the following 1991 Volvo 780 Submodels:
- Base | 4 Cyl 2.3 L GAS
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1991 Volvo 780 Thermostat Part Number: 273459
$31.16 MSRP: $46.44
You Save: $15.28 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat Kit; Thermostat
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 273459
- Warranty: This genuine part is guaranteed by Volvo's factory warranty.
Fits the following 1991 Volvo 780 Submodels:
- Base | 4 Cyl 2.3 L GAS

1991 Volvo 780 Thermostat Parts and Q&A

Q: How to remove and install a thermostat on 1991 Volvo 780?
A: To change the thermostat, disconnect the negative battery cable and drain the cooling system. Remove the coolant hose and bolts and thermostat housing. Clean surfaces, replace gasket and thermostat and reassemble. Refill the cooling system, reconnect the battery, start the engine, bleed the system, and look for leaks.