Hyundai Elantra (CN7): Cylinder Head Assembly / Vacuum Pump
Repair procedures
| Removal |
| 1. | Disconnect the battery negative terminal. |
| 2. | Remove the air duct and air cleaner assembly. (Refer to Intake and Exhaust System - "Air Cleaner") |
| 3. | Remove the battery and battery tray. (Refer to Engine Electrical System - "Battery") |
| 4. | Disconnect the brake vacuum hose (A).
|
| 5. | Disconnect the fuel hose (A) and PCSV hose (B).
|
| 6. | Remove the main wiring protector (A) after disconnecting the connector (B).
|
| 7. | Disconnect the intercooler inlet hose (A).
|
| 8. | Remove the intercooler pipe (A).
|
| 9. | Remove the vaccum pump (A).
|
| 10. | Install in the reverse order of removal. |
Repair procedures Removal • Use Fender cover to avoid damaging painted surfaces.• To avoid damaging the cylinder head, wait until the engine coolant temperature drops below normal temperature before removing it.
Other information:
Hyundai Elantra (CN7) 2021-2026 Service Manual: Description and operation
DescriptionSystem OverviewThe System offers the following features:– Human / machine interface through a 1-stage button, for terminal switching and engine start.– Control of external relays for ACC / IGN1 / IGN2 terminal switching and STARTER, without use of mechanical ignition switch.
Hyundai Elantra (CN7) 2021-2026 Service Manual: Evaporator Temperature Sensor
Description and operation DescriptionThe evaporator temperature sensor will detect the evaporator core temperature and interrupt compressor relay power in order to prevent evaporator from freezing by excessive cooling. The evaporator temperature sensor has the Negative Temperature Coefficient (NTC).
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