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.

Rattling Sound

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Old 06-25-2009, 04:43 PM
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Default Rattling Sound

1 prob after another....
When i start her up theres a rattling round coming somewhere underneath the car, when you give her some gas it goes away, this happens when the she sits over night (usually when cold). Also rattles on stop lights. When shes warm or hot it doesnt rattle at all. Im hoping its the exhaust but worried its not any barrings going
Old 06-25-2009, 05:03 PM
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Its possible it is only the exhaust.

There are four heat shields. One up by the down pipe, one above the cat, and one above the res, and one above the muffler.

When the exhaust warms up the shields may be tight enough to not rattle.

When the car is cold and not running, hit the exhaust with a rubber mallet to determine if there is a loose shield.
Old 06-25-2009, 07:25 PM
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I agree with Todd. Heat shields that are loose can make some noises that sound like the car/engine/tranny are falling apart. Let us know how things go.
Old 06-26-2009, 04:43 PM
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Yeah I agree with the above two- mine does the same thing. Goes away when driving, but idling it is bad
Old 07-05-2009, 09:09 PM
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sry for the long wait, its the metal shield above the resonator
Old 07-05-2009, 10:18 PM
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probably just a sheared off rivet head. you could drill out the old rivet carefully and just pop in a new one and your good to go

Glad to hear its not a bad motor.........
Old 07-05-2009, 10:22 PM
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ill just probably live with it, doesnt bother me too much, but yea good its not motor :/
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