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.
How do I stop no air from dashboard vents?
This door is controlled by a thumb wheel that when activated will open and close the vent air flow door. Work the thumb wheel from one side to the other while checking the airflow. The flow should stop and start again, if the thumb wheel does not make a difference the problem is somewhere else.
Where is the flapper valve on a Volvo air conditioner?
The problem is the flapper door in the heater is not fully closed. There is an adjustment for this in the cable, just behind the heater control. If you remove the glove compartment, you can see the heater controls. The cable on the bottom controls the flapper valve for heat. The adjustable part of the cable is at the heater control.
Why do I have to change coolant on my Volvo 960?
Consensus opinion is that these are due to failure to change coolant regularly and to use the proper coolant. Contrary to your owner’s manual, the coolant is NOT “lifetime” and has to be replaced.
How to fix intermittent a / C in a Volvo?
Once the AC clutch obviously disengages itself and begins blowing warm air, turn off the AC with the button on the center console. Give the clutch a few minutes to cool down before turning the AC back on. If the clutch has cooled down enough, it should then reengage without any issues.
Where is the coolant drain on a Volvo 940turbo?
You will not be able to remove all the coolant: it always seems as though about two quarts remains in the system. On the 940Turbo:the coolant drain is at the end of the short hose leading from the oil cooler, about five inches behind the oil filter beneath the car. It points down from the tubing on which it is mounted.
What kind of solder does a Volvo radiator use?
My own experience with Dexcool has been positive with one exception: the solder in a Nissen brass radiator began leaking . Dexcool is known to have problems with high-lead solders, and is also sensitive to air levels in cooling systems.