Symptom Chart: Noise, Vibration, and Harshness (NVH)
WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .
NOTE:
Some PCM Diagnostic Trouble Codes (DTCs) may inhibit A/C operation. If any PCM Diagnostic Trouble Codes (DTCs) are retrieved, diagnose those first. Refer to the DTC Chart: Powertrain Control Module (PCM) .
| Condition | Possible Sources | Actions |
|---|---|---|
| Noisy A/C compressor | A/C compressor bearing worn | INSPECT the A/C compressor bearing for roughness. If bearing roughness is found, INSTALL a new A/C Compressor. Refer to the appropriate procedure in REMOVAL AND INSTALLATION . |
| Excessive hissing from the plenum when the A/C is on | Incorrect A/C refrigerant level | CHECK the A/C refrigerant level. CARRY OUT the refrigerant system tests. Refer to the appropriate Refrigerant System Tests procedure in GENERAL PROCEDURES . |