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 CONDITIONINGSERVICE AND REPAIREVACUATING REFRIGERANT SYSTEM
1999 Hyundai Elantra Wagon L4-2.0L
Evacuating Refrigerant System
1999 Hyundai Elantra Wagon L4-2.0LSECTION Evacuating Refrigerant System
1. When an A/C System has been opened to the atmosphere, such as during installation or repair, it must be evacuated using a vacuum pump. (If the system has been open for several days, the receiver/drier should be replaced).
2. Start the pump, then open both gauge valves. Turn the pump for about 15 minutes. Close the valves and stop the pump. The low gauge should indicate above 700 mm Hg (27 inHg) and remain steady with the valves closed.
NOTE: If low pressure does not reach more than 700 mmHg (27 inHg) in 15 minutes, there is probably a leak in the system. Check for leaks, and repair. Refer to Testing and Inspection.
3. If there are no leaks open the valves and continue pumping for at least another 15 minutes, then close both valves and stop the pump.
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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.