Chevy Impala Forums - Reply to Topic
Chevy Impala 8th Gen Discussion W-Body 2006-2013 (2014+ Limited). Discuss all Chevy Impala 8th Generation Performance and Technical Discussion here.

Thread: Engine Noise - 2009 Chevy Impala LT Reply to Thread
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:

Register Now

In order to be able to post messages on the Chevy Impala Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
04-16-2018 05:21 PM
sheila Fwiw, Harbor Freight Tools sells mechanics stethoscopes for ~$5.
04-16-2018 12:33 PM
TeeRev +1 Definitely sounds like a bad pulley bearing.

If you don't have a mechanics stethoscope, a long screwdriver works just as well. Just be *super* careful. That's what I used to determine my tensioner was going bad.
04-16-2018 11:55 AM
reubenswinks Odds are very high that it is a bad bearing on one of the pulleys. First thing I would check is if it changes whether or not the a/c is on just because it is the easiest thing to check. If no change, easiest way to ensure it is bearing related is to remove the belt and briefly run the engine in the same conditions and see if the noise went away. If it goes away, you know it is something driven by the belt. At that point you are best off using a mechanic stethoscope to figure out which one is making the noise. If you dont have one, while the belt is off you can also spin each of the pulleys by hand, feeling to see if any has a grinding feel or noise to it. The should spin smoothly. Check idler pulleys and tensioner as well. If taking the belt off makes no difference, there is something going on inside the engine which may be harder to diagnose by yourself.
04-16-2018 11:44 AM
Engine Noise - 2009 Chevy Impala LT

This morning my Chevy Impala started making a higher pitched whiny-grinding sound, like a belt was doing something funky). The sound is only present when revving the engine, accelerating, depressing the gas pedal... Sound is still there while in park stationary while revving the engine.

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

For the best viewing experience please update your browser to Google Chrome