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Nissan Armada 2025-2026 Service and Repair Manual: Noise, Vibration and Harshness (nvh) Troubleshooting

Nissan Armada 2025-2026 Service and Repair Manual / Engine / Engine Mechanical / Noise, Vibration and Harshness (nvh) Troubleshooting

NVH Troubleshooting Chart

NVH Troubleshooting chart

Use the Chart Below to Help You Find the Cause of the Symptom

  1. Locate the area where noise occurs.

  2. Confirm the type of noise.

  3. Specify the operating condition of the engine.

  4. Check specified noise source.

    If necessary, repair or replace these parts.

    Location of noise Type of noise Operating condition of engine Source of noise Check item Reference page
    Before warm-up After warm-up When starting When idling When racing While driving

    Top of engine

    Rocker cover

    Cylinder head     		Ticking or clicking C A — A B — Tappet noise Valve clearance Refer to Adjustment.
    Rattle C A — A B C Camshaft bearing noise

    Camshaft runout

    Camshaft journal oil

    clearance     		Refer to Inspection.

    Crankshaft pulley

    Cylinder block (Side of engine)

    Oil pan     		Slap or knock — A — B B — Piston pin noise

    Piston to piston pin oil clearance

    Connecting rod bushing oil clearance     		Refer to Inspection.
    Slap or rap A — — B B A Piston slap noise

    Piston to cylinder bore clearance

    Piston ring side clearance

    Piston ring end gap

    Connecting rod bend and torsion     		Refer to Inspection.
    Knock A B C B B B Connecting rod bearing noise

    Connecting rod bushing oil clearance

    Connecting rod bearing oil clearance     		Refer to Inspection.
    Knock A B — A B C Main bearing noise

    Main bearing oil clearance

    Crankshaft runout     		Refer to Inspection.

    Front of engine

    Timing chain case     		Tapping or ticking A A — B B B Timing chain and timing chain tensioner noise

    Timing chain cracks and wear

    Timing chain tensioner operation

    • Refer to Inspection.

    • Refer to Removal and Installation.
    Front of engine Squeaking or fizzing A B — B — C Drive belt (Sticking or slipping) Drive belt deflection Refer to Inspection.
    Creaking A B A B A B Drive belt (Slipping) Idler pulley bearing operation

    Squall

    Creak     		A B — B A B Water pump noise Water pump operation Refer to WATER PUMP : Inspection.

    A: Closely related B: Related C: Sometimes related —: Not related

    Other materials

    Engine Cooling System. Engine Cooling System Symptoms
    Engine Cooling System Symptoms Symptom Table   Symptom Check items Cooling system parts malfunction Poor heat transfer Water pump malfunction Worn or loose drive belt — Multi-way control valve stuck closed — Damaged fins Dust contamination or paper clogging Physical ...

    Precautions
    Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger fo ...

    Front Center Console Assembly
    Exploded View REMOVAL Front center console switch finisher assembly Front center console bracket Front center console side finisher upper LH Front center console side finisher lower LH Instrument lower cover LH Front center console mask LH Front center console rear finisher assemb ...