POPCORN TYPE NOISE

1995 Oldsmobile Silhouette

Tiny

stevewierzba

June, 10, 2012 AT 2:28 AM

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

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12 Answers

Tiny

ASEMaster6371

June, 10, 2012 AT 2:44 AM

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

Tiny

cadieman

June, 10, 2012 AT 2:47 AM

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.

Tiny

stevewierzba

June, 10, 2012 AT 2:51 AM

When I take off the belt and run the engine the noise goes away.

Tiny

ASEMaster6371

June, 10, 2012 AT 3:32 AM

Then it is an external pulley or bearing making noise. Spin all the pulleys to see if you can hear the noise.

Roy

Tiny

cadieman

June, 10, 2012 AT 3:32 AM

Then its something in the drive pullys trace it like I said.

Tiny

stevewierzba

June, 10, 2012 AT 3:37 AM

Ive replaced all but the tensioner arm. Hmmmm thank you much for the insight

Tiny

cadieman

June, 10, 2012 AT 4:16 AM

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.

Tiny

stevewierzba

June, 10, 2012 AT 4:41 AM

Did attenator and ive bypassed the a/c (froze up)im lost arrggghhhh!

Tiny

cadieman

June, 10, 2012 AT 8:48 PM

Put the belt back on and listen to the pullys like I said and stop buying parts

Tiny

stevewierzba

June, 20, 2012 AT 10:11 PM

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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