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 MANUALSMAZDA1998626 LX L4-2.0L DOHCREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCOMPRESSOR HVACSERVICE AND REPAIR
1998 Mazda 626 LX L4-2.0L DOHC
Compressor HVAC: Service and Repair
1998 Mazda 626 LX L4-2.0L DOHCSECTION Service and Repair
1. Discharge the refrigerant from the system.
2. Disconnect the negative battery cable.
3. Remove the under cover.
4. Remove the drive belt.
CAUTION: If moisture or foreign material enters the refrigeration cycle, cooling ability will be lowered and abnormal noise will occur. Always immediately plug all open fittings after removing any refrigeration cycle parts to keep moisture or foreign material out of the cycle.
5. Disconnect the cooler hoses (HI) and (LO).
6. Remove in the order indicated in the table. Do not allow compressor oil to spill.
7. Install in the reverse order of removal.
8. Adjust the drive belt.
9. Recharge with refrigerant.
10. Perform the refrigerant system performance test.
A/C Compressor Installation Note
- Remove the following amount of SP-20 compressor oil from the new A/C compressor when replacing the A/C compressor.
Compressor oil to be removed
240 ml (240 cc, 8.11 fl oz) - [compressor oil from old A/C compressor + 15 ml (15 cc, 0.5 fl oz)]
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:
- • 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.