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Popcorn type noise

Tiny
STEVEWIERZBA
  • MEMBER
  • 1995 OLDSMOBILE SILHOUETTE
  • 175,000 MILES
1995 olds silohette 175000 mi. Was told the timing chain is bad because of a popcorn type noise but I feel the vibration mainly on the belt tensionor replaced ps pump, water pump, alt tensioner pulley. Doesnt sound internal. Any ideas
Sunday, June 10th, 2012 AT 2:28 AM

12 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Go to another shop and get a second opinion. We cannot hear the noise and can only guess. Get a couple of opinions before making your decision.

Roy
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Sunday, June 10th, 2012 AT 2:44 AM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
Use a long screw driver. Put it to the timing cover. Then put the handle to your ear. Youll hear it. Then u can put it on different componites to trace the noise down.
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Sunday, June 10th, 2012 AT 2:47 AM
Tiny
STEVEWIERZBA
  • MEMBER
  • 9 POSTS
When I take off the belt and run the engine the noise goes away.
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Sunday, June 10th, 2012 AT 2:51 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Then it is an external pulley or bearing making noise. Spin all the pulleys to see if you can hear the noise.

Roy
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Sunday, June 10th, 2012 AT 3:32 AM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
Then its something in the drive pullys trace it like I said.
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Sunday, June 10th, 2012 AT 3:32 AM
Tiny
STEVEWIERZBA
  • MEMBER
  • 9 POSTS
Ive replaced all but the tensioner arm. Hmmmm thank you much for the insight
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Sunday, June 10th, 2012 AT 3:37 AM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
U didnt replace the altenator the a/c compressor or vacuum pump if equipted. If it was the tensioner. The pully would be to loose or tight.
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Sunday, June 10th, 2012 AT 4:16 AM
Tiny
STEVEWIERZBA
  • MEMBER
  • 9 POSTS
Did attenator and ive bypassed the a/c (froze up)im lost arrggghhhh!
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Sunday, June 10th, 2012 AT 4:41 AM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
Put the belt back on and listen to the pullys like I said and stop buying parts
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Sunday, June 10th, 2012 AT 8:48 PM
Tiny
STEVEWIERZBA
  • MEMBER
  • 9 POSTS
Thanks harmonic balancer now that ive done that it wants to die after about 20 mins of driving! WTF is wrong with this van it never ends. Replaced coil packs and ignition module tests fine(even after 20 repeats) lost again. Lol
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Wednesday, June 20th, 2012 AT 10:11 PM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
U need to know what the fuel pressure is when it wont start?
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Wednesday, June 20th, 2012 AT 11:00 PM
Tiny
STEVEWIERZBA
  • MEMBER
  • 9 POSTS
Has a new fuel pump and it starts just sputters out let it sit for 10 mins then runs fine for a bit then does it again
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Thursday, June 21st, 2012 AT 1:56 AM

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