1993 Oldsmobile Cutlass LOUD RATTLE NOISE WHEN RUNS

1993 OLDSMOBILE CUTLASS
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CHOPIUS
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Noises problem
1993 Oldsmobile Cutlass 6 cyl Front Wheel Drive Automatic 135K miles

My Olds start making a rattle noise since start, when accelerate reduce the noise. I took out the seroentien belt and the noise almost disapear, then I roll every accesory and they seem to be ok, but if I try to roll the crank pulley a metal noise shows.

pls let me know what can be

Is this noise related to the timming belt?
Mar 24, 2010 at 7:33 PM
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LEGITIMATE007
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sounds like the bearings on one of the pulleys are going bad, mosltlikely its the tensioner pulley, water pump pulley or the a/c pulley sometimes they are just loose, but in most cases they are in bad shape
Mar 27, 2010 at 10:48 AM
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CHOPIUS
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Thank You for your answer, make sense what you said.
Also when I start the car without the serpentine belt, there's no noise, but when I turn off the car, there is a metal rattle noise while the engine stop.
Is that possible that the crank pulley bearing are bad?
or needs tighten? is difficult replace the crank pulley?

thank you in advance
Mar 29, 2010 at 3:40 PM
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LEGITIMATE007
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yes, and yes, you need a pulley for the crankshaft pulley,
Mar 29, 2010 at 3:41 PM