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Nissan Armada 2025-2026 Service and Repair Manual: Noise

Nissan Armada 2025-2026 Service and Repair Manual / Ventilation, Heater & Air Conditioner / Heater & Air Conditioning System / Noise

Symptom Table

Symptom Noise source Probable cause Corrective action
Unusual noise from A/C compressor when A/C is ON. Inside of A/C compressor Wear, breakage, or clogging of foreign material in inner parts. Check A/C compressor oil. Refer to Inspection.
Magnet clutch Contact of clutch disc with pulley. Replace A/C compressor. Refer to Removal and Installation.
A/C Compressor body Loosened A/C compressor mounting bolts. Check bolts for tightness. Refer to Exploded View.
Unusual noise from cooler piping. Cooler piping (pipe and flexible hose) Improper installation of clip and bracket. Check the installation condition of the cooler piping. Refer to Exploded View.
Unusual noise from expansion valve when A/C is ON. Expansion valve Shortage of refrigerant.

  • Check for leakage.

  • Collect all refrigerant, evacuate refrigerant cycle again, and then refill it with the specified amount of refrigerant.
Wear, breakage, or clogging of foreign material in inner parts.

Eliminate foreign material from expansion valve, or replace it.

  • Front: Removal and Installation
  • Rear: Removal and Installation
Unusual noise from belt. — Loosened belt. Check belt tension. Refer to Inspection.
Internal A/C compressor parts get locked. Replace A/C compressor. Refer to Removal and Installation.
    Other materials

    Cylinder Head
    Exploded View Valve lifter (EXH) Valve collet (EXH) Valve spring retainer (EXH) Valve oil seal (EXH) Valve spring (EXH) Valve spring seat (EXH) Valve guide (EXH) Spark plug tube Valve lifter (INT) Valve collet (INT) Valve spring retainer (INT) Valve oil seal (IN ...

    Front Wheel Hub and Knuckle
    Exploded View Upper ball seat Steering knuckle Baffle Splash guard Wheel hub and bearing assembly Disc rotor Hub bolt Cotter pin Lower ball seat : vehicle front : N·m (kg-m, in-lb) : N·m (kg-m, ft-lb) : Always replace after every disassembly. Removal ...

    Sunload Sensor
    Exploded View Sunload sensor Front speaker grille     : Pawl : vehicle front Removal and Installation REMOVALRemove front speaker grille. Refer to Removal and Installation. Disengage fixing pawls, and then push down sunload sensor and remove it. : Pawl INSTALLATIONIn ...