Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSAAB19949000 HATCHBACK L4-2290CC 2.3L DOHCREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGDESCRIPTION AND OPERATIONTECHNICAL DESCRIPTIONHEATING AND VENTILATION UNITAIR DISTRIBUTION
1994 Saab 9000 Hatchback L4-2290cc 2.3L DOHC
Air Distribution
1994 Saab 9000 Hatchback L4-2290cc 2.3L DOHCSECTION Air Distribution
The air distribution control can be regulated to a number of detent positions between the four main positions.
A certain amount of air is always directed to the defroster vents in order to keep the windscreen and windows free from mist.
1 Position 0
All vents closed. No air distribution. No power to fan motor. Despite this there may be a draught when the car is driven. The air is forced in through the system by wind pressure.
2 Ventilation position.
Air from vents in facia. Small amount of leakage to defroster vents (felt at high fan speed).
Selectable fan speed.
3 Floor position.
Air from floor vents. Small amount of leakage to defroster vents (felt at high fan speed).
Selectable fan speed.
4 Defroster position.
Air from defroster vents.
Small amount of leakage to floor vents (felt at high fan speed).
Selectable fan speed.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.