What are common reasons my Volvo S40 has heater problems?
What are common reasons my Volvo S40 has heater problems? While there are a variety of reasons your Volvo S40 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.
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.
Where is the heater resistor on a Volvo?
This tutorial was contributed to www.volvohowto.com by is author “gatos”. The heater resistor is located in the passenger’s foot-well behind the glovebox. First of all, you need to remove the sound insulation cover under the glovebox. To do this, you need to undo two screws (philips head) located where the yellow arrows are pointing.
How does air flow in a Volvo S40?
In the S40 the air in the passenger compartment passes through the parcel shelf into the cargo compartment. Then the air is extracted through non-return valves that open with overpressure. In the V50, like the V40, the air is extracted through non-return valves that open with overpressure. AIR FLOW
Are there any problems with the 2005 Volvo S40?
See all problems of the 2005 Volvo S40 . Driving down the highway at 55 mph when instrument panel went completely blank I heard a sizzling noise behind the dash board. I lost the speedometer, gas gauge, light indicator, blinker indicators, all of the instruments you depend on while driving down the road.
Why is the radiator cooling fan still on on a Volvo S40?
Removed ignition key (was inserted to ensure steering was unlocked) but radiator cooling fan remained on (engine hadn’t run for 2. 5 hours by that time). Pulled a fuse under the hood to stop it dumping the battery.
Why is my air conditioner not working in my Volvo?
You have a vacuum leak which causes the heat vent control to work improperly; Your firewall-side heater water valve was installed backwards; The arrow on the valve points to towards the firewall inlet, not back towards the engine. Control cables from the heater control unit to air mixing doors are maladjusted or broken.
Why does my Volvo air conditioner make a hissing noise?
The manual heater control assembly supplies vacuum to the under hood heater valve to shut off coolant flow to the heater core in the cold position of the control lever. The vacuum connection had come off the heater valve, and the free flow of air caused the hissing sound at the heater control.
What to do if your car heater is not working?
Solution: Set the heater to its maximum setting, remove the coolant tank cap and fill it to the proper level. Start the engine with cap still open and let the engine idle for a few minutes. If the coolant level should drop as the thermostat opens, top it up as necessary.
What happens when a thermostat is stuck in the open position?
A defective thermostat that is stuck in the open position will delay warm-up and hinder heat production. A faulty thermostat can also make your temperature gauge read lower than normal and turn your check engine light on. Solution: Your mechanic can test the thermostat and replace it if necessary.
What happens if the heater control valve fails?
When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold. Also, the valve could leak engine coolant, p…