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I have a clattering sound coming from below my engine.

(1999 Ford Explorer)
in Sears, MI on May 19, 2012
I have replaced the PCV valve, and it seemed the clatter slowly got louder. I have replaced the exhaust and again louder. I tried the plugs and wires thinking spark knock and again louder. A friend suggested it may be the oil pump causing this, as he says the sound originates from the flywheel and oil pan area of the vehicle. What should I do to isolate the issue and fix the problem. My father said if it is the oil pump to buy another vehicle as it has already compromised the engine. Is this true? I have never lost a drop of oil or any other fluid, it has been a great truck and I would like to keep her around a few more years.
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Popular Answer
on May 19, 2012
Loose heat shields on the cat converter?
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