Symptom Chart NVH
Symptom Chart - NVH
Diagnostics in this service information assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods
Symptom Chart
| Condition | Possible Sources | Actions |
|---|---|---|
| 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 REFER to: Fluorescent Dye Leak Detection |
| The A/C compressor is noisy | A/C compressor clutch air gap out of specification | CHECK and ADJUST the A/C compressor clutch gap if necessary. REFER to: Air Conditioning (A/C) Clutch Air Gap Adjustment If the A/C compressor clutch air gap is OK, INSTALL a new A/C compressor clutch. REFER to: Air Conditioning (A/C) Clutch and Air Conditioning (A/C) Clutch Field Coil |
| A/C compressor pulley bearing worn | INSPECT the A/C compressor pulley bearing for roughness. If pulley bearing roughness is found, INSTALL a new A/C compressor pulley. REFER to: Air Conditioning (A/C) Clutch and Air Conditioning (A/C) Clutch Field Coil |
|
| 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: Air Conditioning (A/C) Compressor - 3.2L Duratorq-TDCi (148kW/200PS) - Puma REFER to: Air Conditioning (A/C) Compressor - 3.5L EcoBoost (235kW/320PS) REFER to: Air Conditioning (A/C) Compressor - 3.7L Duratec (199kW/270PS) |