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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Saab 900 car and truck
repair procedures including Saab engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
your 1991 Saab 900 automobile. Try the Automotix DIY solution today!
We have info for following modifications of 1991 Saab 900
- 1991 Saab 900 2.0 L4 GAS, CC:1985, Fuel Injection, Engine VIN:, Desg:L
- 1991 Saab 900 2.1 L4 GAS, CC:2119, Fuel Injection, Engine VIN:, Desg:E
- 1991 Saab 900 S 2.1 L4 GAS, CC:2119, Fuel Injection, Engine VIN:, Desg:E
- 1991 Saab 900 SE 2.0 L4 GAS, CC:1985, Fuel Injection, Engine VIN:, Desg:L
- 1991 Saab 900 SPG 2.0 L4 GAS, CC:1985, Fuel Injection, Engine VIN:, Desg:L
A/C & HEATER SERVICE PROCEDURES FOR 1991 Saab 900 AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1991 Saab 900 cars and light trucks from 1990+
Saab -> Component Replacement & Adjustment -> COMPRESSOR, REPLACE -> 900 -> 9000
Vehicle: 1991 Saab 900 SPG 2.0 L4 GAS
900
- Disconnect battery ground cable.
- Discharge refrigerant from system.
- Loosen adjusting link and remove compressor drive belt.
- Remove high and low pressure lines from compressor and cap open lines.
- Remove wiring from pressure switch.
- Remove four compressor retaining bolts, then remove compressor.
- Reverse procedure to install.
9000
- Disconnect battery ground cable and discharge A/C system.
- Disconnect refrigerant lines from compressor, then plug lines and open fittings.
- Disconnect electrical connector t...
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A/C & HEATER SERVICE PROCEDURES FOR 1991 Saab 900 AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1991 Saab 900 cars and light trucks from 1990+
Saab -> Automatic Air Conditioning Diagnosis & Testing -> DESCRIPTION -> ACC UNIT & POWER SUPPLIES -> AIR CONDITIONING UNIT -> AIR CONDITIONING UNIT CONTROL -> Auto Mode -> Automatic & Economy Modes -> Cold Start Mode -> INPUTS -> Limp Home Mode -> Manual Mode -> Off Mode -> OUTPUTS -> RECIRCULATION FLAP & A/C UNIT -> SOLAR SENSOR -> TEMPERATURE SENSORS -> Warm start Mode
Vehicle: 1991 Saab 900 2.1 L4 GAS
INPUTS
The temperature indication signals from the cabin and blended air temperature sensors are DC signals proportional to temperature. The cabin sensor also receives a supply signal for the induction fan.
The solar sensor input is also an output since it is a serial data link providing two way communication between the microprocessors used in the solar sensor and ACC unit.
Either the P timer or the DCC applies a 12 volt signal to start the parking heater mode and the ACC in turn applies a wake up signal to the EDU to request outside temperature indication.
...
CLICK HERE TO GET FULL ACCESS TO 1991 Saab 900 A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 1991 Saab 900 AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1991 Saab 900 cars and light trucks from 1990+
Electrical Symbol & Wire Color Code Identification -> Wire Color Code Identification -> Imported Vehicles
Vehicle: 1991 Saab 900 2.1 L4 GAS
CLICK HERE TO GET FULL ACCESS TO 1991 Saab 900 A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 1991 Saab 900 AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1991 Saab 900 cars and light trucks from 1990+
Saab -> Component Replacement & Adjustment -> CONDENSER, REPLACE -> 900 -> 9000
Vehicle: 1991 Saab 900 2.1 L4 GAS
900
- Discharge refrigerant from system.
- Disconnect compressor high pressure line and receiver high pressure line at the receiver. Cap all open refrigerant lines.
- Remove top two condenser retaining screws.
- Raise and support front of vehicle.
- Remove lower row of screws on the spoiler.
- Remove the lower two condenser retaining screws.
- Lift spoiler and pull condense...
CLICK HERE TO GET FULL ACCESS TO 1991 Saab 900 A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 1991 Saab 900 AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1991 Saab 900 cars and light trucks from 1990+
Imported Cars & Light Trucks & Vans -> 1991-92 -> Precautions -> Cleanliness -> General Service -> Safety
Vehicle: 1991 Saab 900 SPG 2.0 L4 GAS
Safety
The Freon refrigerant used in car air conditioners is also known as R-12. It is colorless and odorless both as a gas and a liquid. Since it boils (vaporizes) at -21.7°F, it will usually be in a vapor state when being handled in a repair shop. But if a portion of the liquid coolant should come in contact with the hands or face, note that its temperature momentarily will be at least 22° below zero.
Protective goggles should be worn when opening any refrigerant lines. If liquid coolant does touch the eyes, bathe the eyes quickly in cold water. Then apply a bland ...
CLICK HERE TO GET FULL ACCESS TO 1991 Saab 900 A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 1991 Saab 900 AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1991 Saab 900 cars and light trucks from 1990+
Saab -> Manual Air Conditioning & Heater Diagnosis & Testing -> A/C SYSTEM DIAGNOSIS & TESTING -> 900 -> 9000 -> A/C SYSTEM PERFORMANCE CHECK -> AIR FLOW DIAGNOSIS
Vehicle: 1991 Saab 900 SE 2.0 L4 GAS
A/C SYSTEM PERFORMANCE CHECK
- Connect suitable gauge manifold to system.
- Insert suitable thermometer approximately 4 inches into center dash vent and position thermometer at blower inlet to measure ambient temperature.
- Start engine and set to run at 2000 RPM.
- On models with manual A/C, set temperature control to COLD, air distribution to VENT, air inlet to recirculation and set blower to run to position 4, then engage A/C.
- On models with Automatic Climate Control II (ACC2), set temperature control at LO and manually set air dis...
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