Nissan Altima 2007-2012 Service Manual: Function diagnosis

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING

NVH Troubleshooting - Engine Noise

1. Camshaft bearing noise

2. Piston pin noise

3. Piston slap noise

4. Main bearing noise

5. Connecting rod bearing noise

6. Drive belt noise (Sticking/Slipping)

7. Drive belt noise (Slipping)

8. Water pump noise

9. Timing chain and chain tensioner noise

10. Tappet noise

A. Valve

B. Valve mechanism

C. Rotation mechanism

D. Drive belt

E. Timing chain

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 engine.

4. Check specified noise source. Repair or replace the identified part as necessary.

A: Closely related

B: Related

C: Sometimes related —: Not related

    Preparation
    Special Service Tool The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here. Commercial Service Tool ...

    On-vehicle maintenance
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    Other materials:

    Rear RH
    Description Door glass moves UP/DOWN by receiving the signal from main power window and door lock/unlock switch or rear power window switch RH.  Component Function Check 1. CHECK REAR POWER WINDOW MOTOR RH CIRCUIT Does rear power window motor RH operate with operating main power window ...

    Intake manifold collector
    Removal and Installation 1. Power valve (RH) 2. Intake manifold collector 3. Gasket 4. Power valve (LH) 5. Electric throttle control actuator REMOVAL WARNING: • To avoid the danger of being scalded, never drain the coolant when the engine is hot. • The gasket for intake manifold c ...

    Magnet clutch
    Description SYSTEM DESCRIPTION Front air control controls A/C compressor operation by ambient temperature and signal from ECM. Low Temperature Protection Control Front air control will turn the A/C compressor ON or OFF as determined by a signal detected by ambient sensor. When ambient te ...