When the outside temperature is above 90° F and the AC is running, a knocking noise from the engine compartment may be heard, especially when the vehicle is stopped or idling. This is commonly caused by a failing AC compressor assembly which will require replacement.
Average mileage: 93,006 (54,000–119,000)
Engines affected: 2.4L 4 Cylinder, 3.5L V6, V6
11 people reported this problem
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Knocking sound when ac is turned off
knocking laft front engine compartment at low speed or at stop I dont know what it is the car is grate other wise but that knocking is drive in me crazy please some one help me