Mystery chirp while under acceleration?

Tiny
OUTTATOWN
  • MEMBER
  • 2002 PONTIAC GRAND PRIX
  • 3.1L
  • V6
  • 2WD
  • AUTOMATIC
  • 183,000 MILES
I have the car listed above that had an exhaust leak for 2 years. I replaced the exhaust from the manifold back and welded all exhaust seams. From there on out I’ve had a mysterious chirping sound under acceleration. I have tried day in and day out to find where the chirping sound comes from, but I’ve been unsuccessful any advice or thoughts would be great thanks!
I’ve changed the oil added trans fluid didn’t do anything.
No mix of coolant or oil.
No metal shavings.
No loss of power or misfires.
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Sunday, March 26th, 2023 AT 5:16 PM

1 Reply

Tiny
KEN L
  • ADMIN
This sounds like you have a serpentine belt tensioner or idler pulley that has gone bad but to be sure please remove the serpentine belt and start the engine for a second to see if the noise goes away if so, spin the accessories and pullies to see which one is making noise. Also, if the belt is worn it can cause the problem as well. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
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Monday, March 27th, 2023 AT 9:36 AM

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