SQUEAK AND RATTLE TROUBLE DIAGNOSES
EXT-7
< SYMPTOM DIAGNOSIS >
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If possible, drive the vehicle with the customer until the noise is duplicated. Note any additional information on
the Diagnostic Worksheet regarding the conditions or location of the noise. This information can be used to
duplicate the same conditions when the repair is reconfirmed.
If the noise can be duplicated easily during the test drive, to help identify the source of the noise, try to dupli-
cate the noise with the vehicle stopped by doing one or all of the following items:
1) Close a door.
2) Tap or push/pull around the area where the noise appears to be coming from.
3) Rev the engine.
4) Use a floor jack to recreate vehicle “twist”.
5) At idle, apply engine load (electrical load, half-clutch on M/T models, drive position on A/T models).
6) Raise the vehicle on a hoist and hit a tire with a rubber hammer.
• Drive the vehicle and attempt to duplicate the conditions the customer states exist when the noise occurs.
• If it is difficult to duplicate the noise, drive the vehicle slowly on an undulating or rough road to stress the
vehicle body.
CHECK RELATED SERVICE BULLETINS
After verifying the customer concern or symptom, check ASIST for Technical Service Bulletins (TSBs) related
to the concern or symptom.
If a TSB relates to the symptom, follow the procedure to repair the noise.
LOCATE THE NOISE AND IDENTIFY THE ROOT CAUSE
1.
Narrow down the noise to a general area. To help pinpoint the source of the noise, use a listening tool
(Chassis ear: J-39570, engine ear, and mechanics stethoscope).
2.
Narrow down the noise to a more specific area and identify the cause of the noise by:
• Removing the component(s) in the area that is / are suspected to be the cause of the noise.
Do not use too much force when removing clips and fasteners, otherwise clips and fasteners can be broken
or lost during the repair, resulting in the creation of new noise.
• Tapping or pushing/pulling the component(s) that is / are suspected to be the cause of the noise.
Do not tap or push/pull the component(s) with excessive force, otherwise the noise is eliminated only tempo-
rarily.
• Feeling for a vibration by hand by touching the component(s) that is / are suspected to be the cause of the
noise.
• Placing a piece of paper between components that are suspected to be the cause of the noise.
• Looking for loose components and contact marks.
Refer to
EXT-8, "Inspection Procedure"
.
REPAIR THE CAUSE
• If the cause is a loose component, tighten the component securely.
• If the cause is insufficient clearance between components:
- Separate components by repositioning or loosening and retightening the components, if possible.
- Insulate components with a suitable insulator such as urethane pads, foam blocks, felt cloth tape, or ure-
thane tape. A NISSAN Squeak and Rattle Kit (J-43980) is available through the authorized NISSAN Parts
Department.
CAUTION:
Never use excessive force as many components are constructed of plastic and may be damaged.
NOTE:
Always check with the Parts Department for the latest parts information.
The following materials are contained in the NISSAN Squeak and Rattle Kit (J-43980). Each item can be
ordered separately as needed.
URETHANE PADS [1.5 mm (0.059 in) thick]
Insulates connectors, harness, etc.
• 76268-9E005: 100
×
135 mm (3.937
×
5.315 in)
• 76884-71L01: 60
×
85 mm (2.362
×
3.346 in)
• 76884-71L02: 15
×
25 mm (0.591
×
0.984 in)
INSULATOR (Foam blocks)
Insulates components from contact. Can be used to fill space behind a panel.
• 73982-9E000: 45 mm (1.772 in) thick, 50
×
50 mm (1.969
×
1.969 in)
• 73982-50Y00: 10 mm (0.394 in) thick, 50
×
50 mm (1.969
×
1.969 in)
INSULATOR (Light foam block)
80845-71L00: 30 mm (1.181 in) thick, 30
×
50 mm (1.181
×
1.969in)
FELT CLOTHTAPE