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1993 Oldsmobile Cutlass LOUD RATTLE NOISE WHEN RUNS

Tiny
CHOPIUS
  • MEMBER
  • 1993 OLDSMOBILE CUTLASS
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?
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Wednesday, March 24th, 2010 AT 7:33 PM

3 Replies

Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
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
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Saturday, March 27th, 2010 AT 10:48 AM
Tiny
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
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Monday, March 29th, 2010 AT 3:40 PM
Tiny
LEGITIMATE007
  • MECHANIC
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Yes, and yes, you need a pulley for the crankshaft pulley.
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Monday, March 29th, 2010 AT 3:41 PM

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