Is the cooling system still functioning when the thermostat is being removed?
TOM: Yes, Lee, removing the thermostat does make the car run cooler. But you should never, ever do it. When the engine is too cool, the thermostat closes and stops the coolant from flowing through the radiator, so the engine heats back up.
Why is my thermostat not working in my car?
Still, a failing thermostat is not the only cause for an abnormal engine operating temperature. Other reasons include low coolant level, a bad water pump, a worn out or loose water pump belt, cooling system leaks, a clogged radiator, a failed radiator fan and a collapsed radiator hose.
What are common reasons my Volvo XC70 has heater problems?
What are common reasons my Volvo XC70 has heater problems? While there are a variety of reasons your Volvo XC70 heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.
Why do I need a new Volvo thermostat?
When the engine gets warm, the thermostat’s spring valve opens, allowing coolant to circulate through the radiator to be cooled. If your Volvo is overheating (it failed closed) or the temperature needle is no longer reaching 3 o’clock (it failed open like mine), you need a new thermostat.
When do you need a Volvo AC heater?
When it’s -15 degrees below zero (celcius) you really need a working heater. At the moment the heater supplies little to no heat at all. The AC seems to work normally supplying cold air and removing humidity.
What is a heater core on a Volvo?
A volvo heater core is a small radiator (matrix) that transfers heat from the engine-cooling system to your car’s air heating/ventilation system. The heater core is much smaller than the engine-cooling radiator in front of the engine. read on to learn more about how to replace a faulty heater core in a Volvo.