The motor on my 1998 bonneville is loud, what is the issue?

Asked by Jan 03, 2015 at 08:35 AM about the 1998 Pontiac Bonneville 4 Dr SLE Sedan

Question type: Maintenance & Repair

Very loud motor when start up recently, but when warms up it goes away.  Motor has
been replaced once already.  What is the issue now?

1 Answer

4,415

Could be a simple as an exhaust leak where the exhaust manifold enters the exhaust pipe. Louder when cold and then seals better as the engine warms up.

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