- A high pitched sound that is heard with each rotation of the accessory drive belt or pulley.
- This sound may appear when starting in cold conditions with high humidity and decrease once the vehicle has warmed up to normal operating temperature.
Diagnostic Information
This characteristic noise can be caused by the presence of moisture on the belt itself or on the pulley (Oh) accessory drives. To simulate this problem, to check the customer's complaint, the drive belt can be sprayed with a small amount of water. If spraying water reproduces this symptom, then the most likely solution is to clean the pulley (ov) accessory drives.
The characteristic whistling noise can also be caused by loose or improperly installed bodywork or suspension components, or other items on the vehicle.
Description of the test
The numbers below refer to the operations in the diagnostic table:
2. This characteristic noise may not be related to the operation of the engine. At this stage, you should make sure that the engine makes noise. If the noise is not caused by the motor, do not use this chart for further diagnosis.
3. This noise may be caused by internal engine components. Remove the belt and run the engine for a few seconds, this will help determine if the whistling sound is related to the drive belt or not. Without a drive belt, the water pump will not work and the engine may overheat. Diagnostic Trouble Codes may also be activated (DTC), if the engine is running without a drive belt.
4. Inspect the drive belt for build-up, sticking and inclusions of foreign particles. These are small balls, growths or veins in the recesses of the drive belt caused by the accumulation of rubber dust.
6. Misalignment of the accessory drive pulleys may be caused by improper installation of the accessory drive pulley or components, or the pulley may have been bent during a previous repair. Check the alignment of the pulleys on the plane by applying a ruler to the grooves of two or three pulleys. If an offset pulley is found, verify that the mounting and dismounting procedures for that accessory drive pulley match.
10. Inspection of fasteners will help eliminate the possibility of incorrectly installing a bolt, nut, gasket, or washer.
12. Pulley Inspection (ov) accessory drive must include an inspection for kinks, dents, or other damage that would prevent the drive belt from properly fitting into the pulley grooves or from resting on a smooth surface when the back of the drive belt is used to drive the pulley.
14. Replacing the drive belt when it is not damaged or has excessive dust particles will only be a temporary repair.
Step | Operation | Values | Yes | No |
1 |
Have you read the diagnostic information Symptom - Engine Mechanical and performed the necessary inspections?
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-
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Go to operation 2
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Go to item Symptoms
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2 |
Check for a whistling sound.
Does the engine make a whistling sound?
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-
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Go to operation 3
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Go to Diagnostic Information
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3 |
Is the whistling sound still present?
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-
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Go to operation 4
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|
4 |
Inspect the drive belt for sticking and inclusions in the area of at least 1/3 of the depth of the drive belt groove.
Are there build-ups and inclusions in the grooves of the drive belt?
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-
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Go to operation 5
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Go to operation 6
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5 |
clear pulley (s) auxiliary drive with a wire brush.
Is the pulley clean (s) accessory drives?
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-
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Jump to operation 15
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-
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6 |
Check pulley alignment (ov) accessory drives.
Are there misaligned or misaligned pulleys?
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-
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Jump to Operation 7
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Jump to operation 8
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7 |
Replace and/or repair problematic accessory drive pulleys.
Have the problematic accessory drive pulleys been repaired and/or replaced?
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-
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Jump to operation 15
|
-
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8 |
Inspect Bracket (s) drive accessories for bends and cracks.
Has the bracket been inspected? (s) accessory drives for kinks and/or cracks?
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-
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Go to operation 9
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Jump to operation 10
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9 |
Replace kinked and/or cracked accessory drive brackets.
Have the accessory drive brackets been replaced if cracked and/or bent?
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-
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Jump to operation 15
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-
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10 |
Inspect for correct installation, looseness and/or missing fasteners.
Were incorrectly installed, loose and/or missing fasteners found?
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-
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Go to operation 11
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Go to operation 12
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11 |
Have fasteners been replaced and/or tightened?
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-
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Jump to operation 15
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-
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12 |
Check for kinks in the accessory drive pulleys.
Is a bent pulley found? (s) accessory drives?
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-
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Jump to operation 13
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Go to operation 14
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13 |
Replace bent pulley (s) accessory drives.
Has the bent pulley been replaced? (s) accessory drives?
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-
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Jump to operation 15
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-
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14 |
Replace drive belt. See Part 1C2, "The mechanical part of the engine is HFV6 3.2L.
Has the drive belt been replaced?
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-
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Jump to operation 15
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-
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15 |
Is the whistling sound still present?
|
-
|
-
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System OK
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