Something's Up with Exhaust - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-12-2007, 11:00 PM   #1
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Default Something'* Up with Exhaust

When I accelerate over 2000 rpm my exhaust starts growling and not in a good way it sounds raggedy. I put the car in park and pressed on the gas and it sounds like there'* something loose inside of my exhaust system, like a ball thats causes a pinging noise. i think its my converter, but I'm not sure. Could anyone help? Does an damaged exhaust system give you a poor fuel mileage?
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Old 01-12-2007, 11:11 PM   #2
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It defintely can .

How many miles are on the car?
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Old 01-12-2007, 11:55 PM   #3
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Give the cat a kick and see if it rattles. If it does, there'* your problem. If not, check the heatshield in the back above the muffler, and see if that has come loose.
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Old 01-13-2007, 02:19 PM   #4
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ok Im going to check it When I get a chance. thanks
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Old 01-26-2007, 03:53 AM   #5
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I didn't check the cat yet, but the noise and bad exhaust sound stopped. could my air/fuel ratio have this type of effect on the exhaust?
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Old 01-26-2007, 07:54 AM   #6
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A loose piece in your exhaust system can get lodged and stop making noise. It can also lodge in a place where it restricts the exhaust.
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Old 02-21-2007, 02:02 PM   #7
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I found out the problem, I just cleaned my air filter and the car is running more smoothly and quietly.
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Old 02-21-2007, 02:06 PM   #8
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air filters dont make pinging noises...

did you ever kick the cat?
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Old 02-21-2007, 02:44 PM   #9
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I missed this thread when you originally posted it.

I had a similar issue on my old 93 SE. It ended up being the heat sheild over the muffler. Two of the srews were missing...so I screwed it back up and the noise never resurfaced.

I doubt you fixed this sound by replacing the air filter. It probably coincedentaly hasn't reoccured.
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Old 02-21-2007, 07:13 PM   #10
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Agreed Vital. If the sound was exhaust and ...let'* say for example it was some loose honeycombs in the catalytic converter..they could have wedged somehow and now the noise is gone.

It'll be back if that'* the case.
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