heat on hi
#1
#2
There's a heater control valve that's a common problem. AutoZone has the original metal style as part#5864. Volvo has switched over to the plastic style. Before buying the part check the cable from the slider control to the valve to see if it's still attached. Need to remove the kick panel next to the driver's right leg (left-hand drive).
#3
#4
Assuming you have a manual climate control system, there is a cable that goes from the temperature control lever to the heater control valve. No vacuum. Test the operation of the control lever by slide it back and forth and see if it operates the valve.
The shutter actuators are vacuum controlled. Vacuum line from the intake manifold to the vacuum tank behind the dash, center bottom. The three push-button switches direct vacuum to the actuators.
The heater control valve is located right above and to the right of the gas pedal.
The shutter actuators are vacuum controlled. Vacuum line from the intake manifold to the vacuum tank behind the dash, center bottom. The three push-button switches direct vacuum to the actuators.
The heater control valve is located right above and to the right of the gas pedal.
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