Symptom Chart - NVH
WARNING: This page is about a different car, the 2015 Lincoln MKS. However, it is still accessible from the selected car via links, so may be relevant.
| Condition | Possible Sources | Action |
|---|---|---|
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NOTE:
NVH symptoms will be identified using the diagnostic tools that are available. For a list of these tools, an explanation of their uses and a glossary of common terms, refer to
Noise, Vibration and Harshness
. Since it is possible any one of multiple systems may be the cause of a symptom, it may be necessary to use a process of elimination type of diagnostic approach to pinpoint the responsible system. If this is not the causal system for the symptom, refer back to
Noise, Vibration and Harshness
for the next likely system and continue diagnosis.
|
||
| Noisy A/C compressor | A/C compressor pulley bearing worn | INSPECT the A/C compressor pulley bearing for roughness. If bearing roughness is found, INSTALL a new A/C clutch and A/C clutch field coil. REFER to Clutch and Clutch Field Coil . TEST the system for normal operation. |
| A/C compressor bearing worn | INSPECT the A/C compressor bearing for roughness. If bearing roughness is found, INSTALL an A/C compressor. REFER to Climate Control . TEST the system for normal operation. | |
| Excessive hissing from the plenum when the A/C is on | Low refrigerant charge | INSPECT the A/C system for a low refrigerant charge; REFER to Electronic Leak Detection or Fluorescent Dye Leak Detection . |