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.
1992 Saturn SL L4-1.9L SOHC VIN 9FACTORY OEM SERVICE PROCEDURE
Compressor Replacement
REMOVAL
1. Disconnect negative battery cable.
2. Recover refrigerant using an approved refrigerant recovery system. Measure the amount of oil lost during recovery and record.
IMPORTANT: Add the recorded amount of new SATURN compressor oil before charging the system.
3. On DOHC (LLO) engine, remove air induction ducts.
4. Remove accessory drive belt from compressor clutch pulley by rotating belt tensioner clockwise.
5. Disconnect compressor clutch CPA and electrical connector.
CAUTION: DO NOT REMOVE HOSES BEFORE SYSTEM IS FULLY DISCHARGED.
6. Disconnect low and high side hoses at compressor.
7. Install plastic bags on the open end of the low and high side hoses.
8. Remove the rear compressor to bracket bolts.
9. Remove the front compressor to bracket bolts.
10. Remove compressor.
IMPORTANT: Keep compressor level during removal to avoid any oil loss from the low or high side ports.
INSTALLATION
IMPORTANT: Keep compressor level during installation to avoid any oil loss from the low or high side ports.
1. Install compressor to front bracket with three bolts. Finger tighten only.
2. Install compressor to rear bracket with three bolts. Tighten front and rear bolts to specifications.
Front Bolts:
Torque: 49 N.m (36 ft-lbs)
Rear Bolts:
Torque: 25 N.m (19 ft-lbs)
3. Remove plugs or plastic bags from low and high side hoses. Lubricate and install new O-rings.
4. Install hoses to the compressor low and high side ports. Tighten bolts to specifications.
Low Side Hose:
Torque: 25 N.m (19 ft-lbs)
High Side Hose:
Torque: 25 N.m (19 ft-lbs)
5. Connect compressor clutch electrical connector and CPA.
6. Install accessory drive belt.
7. Connect negative battery cable.
8. On DOHC (LLO) engine, install air induction ducts.
9. Evacuate, charge, and leak test A/C system.
10. Run A/C performance test.
1. Disconnect negative battery cable.
2. Recover refrigerant using an approved refrigerant recovery system. Measure the amount of oil lost during recovery and record.
IMPORTANT: Add the recorded amount of new SATURN compressor oil before charging the system.
3. On DOHC (LLO) engine, remove air induction ducts.
4. Remove accessory drive belt from compressor clutch pulley by rotating belt tensioner clockwise.
5. Disconnect compressor clutch CPA and electrical connector.
CAUTION: DO NOT REMOVE HOSES BEFORE SYSTEM IS FULLY DISCHARGED.
6. Disconnect low and high side hoses at compressor.
7. Install plastic bags on the open end of the low and high side hoses.
8. Remove the rear compressor to bracket bolts.
9. Remove the front compressor to bracket bolts.
10. Remove compressor.
IMPORTANT: Keep compressor level during removal to avoid any oil loss from the low or high side ports.
INSTALLATION
IMPORTANT: Keep compressor level during installation to avoid any oil loss from the low or high side ports.
1. Install compressor to front bracket with three bolts. Finger tighten only.
2. Install compressor to rear bracket with three bolts. Tighten front and rear bolts to specifications.
Front Bolts:
Torque: 49 N.m (36 ft-lbs)
Rear Bolts:
Torque: 25 N.m (19 ft-lbs)
3. Remove plugs or plastic bags from low and high side hoses. Lubricate and install new O-rings.
4. Install hoses to the compressor low and high side ports. Tighten bolts to specifications.
Low Side Hose:
Torque: 25 N.m (19 ft-lbs)
High Side Hose:
Torque: 25 N.m (19 ft-lbs)
5. Connect compressor clutch electrical connector and CPA.
6. Install accessory drive belt.
7. Connect negative battery cable.
8. On DOHC (LLO) engine, install air induction ducts.
9. Evacuate, charge, and leak test A/C system.
10. Run A/C performance test.
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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