Tapping noise

Asked by mchapar001 Feb 21, 2018 at 10:08 AM about the 2005 Buick LeSabre Custom Sedan FWD

Question type: Maintenance & Repair

I got the car back from the mechanic after they repaired the intake manifold
and the fuel pump. Ever since, there is a tapping noise when you start the
vehicle and it continues until the car reaches about 40mph or I lift my foot of
the gas pedal. It is worse when it is cold outside. The car works fine
otherwise, there has been no overheating, trouble driving it or check engine
lights coming on. Not sure of what the problem is or how concerned I should
be. This car has about 98000 miles.

3 Answers
101,555

KenF answered 6 years ago

I'd suggest you still have an intake manifold problem then - take it back to your mechanic, it might just be a gasket issue. When engine gets warmed up materials expand, so maybe that is why the issue seems worse when running cold.

1 people found this helpful.
Mark helpful

Ryan answered 8 months ago

Listen to it and see if its coming from the top or bottom. If its from the top Its probably in your valve train (lifters , loose rocker arm nuts) . If its from the bottom its maybe a rod bearing. Thats if its a ticking or chattering noise. Best of luck to you

Mark helpful

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