1994 Ford Ranger pinging sound from the engine

1994 FORD RANGER
157,000 MILES • 6 CYL • 2WD • AUTOMATIC
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1994 Ford Ranger mileage: 157,000. I am noticing a pinging sound from the engine, which has gotten worse in last few days. It is a similar type sound experienced when using lower grade gas in a vehicle. When I accelerate, it gets much worse. Is this a serious problem and can you tell me what could be possibly causing this noise?

Feb 2, 2011 at 6:50 PM
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Yes, this is a serious problem and the knock sensor has probably failed.
Feb 2, 2011 at 6:52 PM
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DAVE'S BIG BACKYARD!
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should have a warning light on.maybe egr valve to.
Feb 3, 2011 at 2:58 AM
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