How to remove and install a thermostat on Volvo 780?

Removing and installing the thermostat requires the removal of the negative battery cable and draining of the cooling system in a proper container. The next thing is to remove the retaining bolts and disconnect the coolant hose to the thermostat housing. Disassemble the thermostat housing, thermostat, and gasket and take note of the fact that certain thermostats may need special alignment or orientation when harvesting the thermostat. To install, wash the mating surfaces, install another gasket and make sure that the thermostat is installed in the right place. Install back the thermostat housing and tighten the bolts up to the appropriate torque. Refill cooling system over the expansion tank, reconnect negative battery cable and start the engine, letting it reach normal operating temperature. Lastly, drain the cooling, fill with coolant and test it by looking at whether it is leaking or not.

Genuine Volvo 780 Thermostat

Engine Coolant Thermostat

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4 Thermostats found

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Volvo 780 Thermostat Part Number: 273307
$26.45 MSRP: $38.71
You Save: $12.26 (32%)
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Product Specifications
- Other Name: Thermostat Kit 2512; Thermostat
- Warranty: This genuine part is guaranteed by Volvo's factory warranty.
Fits the following Vehicles:
- 1989-1991 | Base | 4 Cyl 2.3 L GAS
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Volvo 780 Thermostat Part Number: 273459
$31.16 MSRP: $46.44
You Save: $15.28 (33%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Thermostat Kit; Thermostat
- Warranty: This genuine part is guaranteed by Volvo's factory warranty.
Fits the following Vehicles:
- 1989-1991 | Base | 4 Cyl 2.3 L GAS
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Volvo 780 Thermostat Part Number: 273364
$27.55 MSRP: $32.26
You Save: $4.71 (15%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat Kit; Thermostat
- Warranty: This genuine part is guaranteed by Volvo's factory warranty.
Fits the following Vehicles:
- 1987-1990 | Base | 6 Cyl 2.8 L GAS
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Volvo 780 Thermostat Part Number: 273480
Product Specifications
- Other Name: Thermostat Kit; Engine Coolant Thermostat; Thermostat
- Warranty: This genuine part is guaranteed by Volvo's factory warranty.
Fits the following Vehicles:
- 1987-1990 | Base | 6 Cyl 2.8 L GAS

Volvo 780 Thermostat

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Volvo 780 Thermostat Parts and Q&A

Thermostat
273307
Q: How to remove and install a thermostat on Volvo 780?
A:
Removing and installing the thermostat requires the removal of the negative battery cable and draining of the cooling system in a proper container. The next thing is to remove the retaining bolts and disconnect the coolant hose to the thermostat housing. Disassemble the thermostat housing, thermostat, and gasket and take note of the fact that certain thermostats may need special alignment or orientation when harvesting the thermostat. To install, wash the mating surfaces, install another gasket and make sure that the thermostat is installed in the right place. Install back the thermostat housing and tighten the bolts up to the appropriate torque. Refill cooling system over the expansion tank, reconnect negative battery cable and start the engine, letting it reach normal operating temperature. Lastly, drain the cooling, fill with coolant and test it by looking at whether it is leaking or not.