Question about Chevrolet Impala
A metallic sound has started coming from the passenger side of the engine. You can only hear it when the car is first accelerating or under load from going up a hill. It sounds like it originates around the tensioner or crankshaft pulleys. I have had the alternator, tensioner and water pump changed. Any ideas on what could be causing it?
Internal transmission failure, there is a bearing that fails on that side of the trans and usually tears up the final drive, drop the pan and check for chunks of metal if found i would replace the trans being the car is 9 years old now
Posted on Jan 15, 2013
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Posted on Jan 02, 2017
Try removing the belt and turning each pulley by hand. If everything is smooth and free, with the belt still off, drive down the block once and see if the noise is there (this will eliminate all rotating accessories on the front). If you hear the noise, then there is a problem deeper inside. Oil pressure is good? Dont' forget when doing this, you will have no power steering, so be careful.
Posted on Jan 17, 2009
The water pump bearings could be going out and they will make a grinding noise.The water pump doesn't always leak when the bearings are going out.
Posted on Sep 01, 2009
The belt is either too tightly fixed or a bit loose.
See to that but it does not affect the running of the car in anyway.
Posted on Oct 18, 2009
I have a 1995 xj6....same problem. I replaced the belts, water pump, and the alternator. Still does it. As I play with the tension on the belt (belt that drives water pump, alternator) it goes away and comes back. If I remove the belt, the metal to metal screech stops. I then, with just the belt, turned the main pulley on the front of the engine, and there was the sound! The main pulley has 2 belts that run on it. Also, 2 pulley tracks. They SHOULD move simultaneously and be super meshed. But the rear one moves on its own under tension until it warms up and I guess, the bushing maybe expands. Now.....how do I fix it??????
Posted on Nov 17, 2009
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