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Symptom Chart: Noise, Vibration, and Harshness (NVH)

WARNING: This page is about a different car, the 2015 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 .

Symptom Chart 

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: Air Conditioning (A/C) Compressor - 2.7L EcoBoost (238kW/324PS) .
REFER to: Air Conditioning (A/C) Compressor - 3.5L EcoBoost (272kW/370PS) .
REFER to: Air Conditioning (A/C) Compressor - 3.5L Duratec (209kW/284PS) .
REFER to: Air Conditioning (A/C) Compressor - 5.0L 32V Ti-VCT .
Excessive hissing from the plenum when the A/C is on Incorrect A/C refrigerant level CHECK the A/C refrigerant level. REFER to: Refrigerant System Tests - 2.7L EcoBoost (238kW/324PS) . REFER to: Refrigerant System Tests - 3.5L EcoBoost (272kW/370PS) . REFER to: Refrigerant System Tests - 3.5L Duratec (209kW/284PS) . REFER to: Refrigerant System Tests - 5.0L 32V Ti-VCT .
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