Where is the knock sensor located in the 2002 Toyota Avalon?

The knock sensor in the 2002 Toyota Avalon is just beneath the intake near the deepest point of the engine block. To access it, You will need to remove both intake manifolds. As its name suggests, the knock sensor deteCTS-Vibrations in the engine. This includes irregularities in combustion. The engine control computer receives this signal and adjusts timing to correct the problem. Symptoms of a bad knock sensor include bad fuel mileage, loud noises, check engine light on, poor acceleration, loss of power, and decreased engine performance. Engine knocking is caused by poor quality fuel, high intake temperatures, carbon build-up, and incorrect engine control unit calibration. The average cost to replace the knock sensor in an Avalon is $420 to $690. Labor accounts for $300 to $370 of that total amount.