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 MANUALSHYUNDAI1999ELANTRA WAGON L4-2.0LREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCOMPRESSOR HVACTESTING AND INSPECTION
1999 Hyundai Elantra Wagon L4-2.0L
Compressor HVAC: Testing and Inspection
1999 Hyundai Elantra Wagon L4-2.0LSECTION Testing and Inspection
1. Install manifold gauge set.
2. Check compressor drive belt tension.
3. Run engine at approx. 1,500 rpm.
4. Check compressor for following:
1. Low pressure gauge reading is not lower and high pressure gauge reading is not higher than abnormal.
2. Metallic sound.
3. Leakage from shaft seal.
If there is any case among the above, repair the compressor.
5. Check magnetic clutch.
1. Lift-up the vehicle.
2. Inspect the pressure plate and the rotor for signs of oil.
3. Check the clutch bearings for noise and leaking grease.
4. Using an ohmmeter, measure the resistance of the stator coil between the clutch lead wire and ground.
Standard resistance : 3.23 ± 0.08 Ohms at 12.8 Volts 20 °C (68 °F)
If resistance value is not as specified, replace the coil.
5. Connect the positive (+) lead from the battery to terminal, check that the magnetic clutch is energized. If magnetic clutch is not energized, replace the coil.
CAUTION: Do not short the positive (+) lead wire on the vehicle by applying battery voltage.
The oil used to lubricate the compressor circulates in the system while the compressor is operating. Whenever replacing any component of the system or when a large amount of gas leakage occurs, add oil to maintain the original total amount of oil.
Total amount of oil in the system: 154cc (5.13 us fl.oz)
2. Check compressor drive belt tension.
3. Run engine at approx. 1,500 rpm.
4. Check compressor for following:
1. Low pressure gauge reading is not lower and high pressure gauge reading is not higher than abnormal.
2. Metallic sound.
3. Leakage from shaft seal.
If there is any case among the above, repair the compressor.
5. Check magnetic clutch.
1. Lift-up the vehicle.
2. Inspect the pressure plate and the rotor for signs of oil.
3. Check the clutch bearings for noise and leaking grease.
4. Using an ohmmeter, measure the resistance of the stator coil between the clutch lead wire and ground.
Standard resistance : 3.23 ± 0.08 Ohms at 12.8 Volts 20 °C (68 °F)
If resistance value is not as specified, replace the coil.
5. Connect the positive (+) lead from the battery to terminal, check that the magnetic clutch is energized. If magnetic clutch is not energized, replace the coil.
CAUTION: Do not short the positive (+) lead wire on the vehicle by applying battery voltage.
The oil used to lubricate the compressor circulates in the system while the compressor is operating. Whenever replacing any component of the system or when a large amount of gas leakage occurs, add oil to maintain the original total amount of oil.
Total amount of oil in the system: 154cc (5.13 us fl.oz)
RENDER: 1.0x
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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.