After replacing the water pump and A/C compressor there us a constant chirping noise coming from the engine

2003 CHEVROLET TRAILBLAZER
140 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
JENDUFRESNE33
  • MEMBER
  • 1 POST
Engine sounds like there is a birds nest in the engine and constant chirping . I just had the water pump and AC compressor replaced a week ago and there's been chirping noise constantly until the vehicle has been driven for about an hour straight. The only time I've ever heard a noise like that is when I had to replace the belt a couple if months ago. Any ideas? Anyone??
Oct 9, 2020 at 8:38 AM
Advertisement
Avatar
ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good evening,

I would start by removing the drive belt and starting the motor and see if the noise is still there. That will tell you it either one of the driven pulleys that is making the noise.

https://www.2carpros.com/articles/chirping-noise

https://www.2carpros.com/articles/car-squeaking-noise

The tensioner is a common failure not keeping the tension correct and the belt wears and the metal ribs start to show.

Roy
Images (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Oct 9, 2020 at 8:57 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.