When this car idles there is a knocking sound that comes and goes. It starts out as a quiet clicking then gets progressively louder and then goes away. This repeats in cycles over 20-30 seconds. In the past, the dealer mechanics figured any clicking was just the injectors. If it were injectors would the sound not be constant? I've always wondered if it might be a faulty knock sensor.
This vehicle has always had the same promblem ever since I purchased it with 50,000 miles. It now has 190,000 miles and is still is a daily driver.
Any Ideas?
Thanks,
Scott
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