Hi!

I have a pretty noise during idle, sounds lika whining almost like a fan or belt noise. It's pretty loud from outside The car and you can hear it in The cabin, it doesnt go away and goes up with revs.

attaching a youtube link.

thanks for all The help.

 

Sounds like the alternator ... Did I see lights on in the dash that don't go off after engine starts? How many miles? May also be an idler pulley bearing and/or tensioner pulley bearing.

 

thanks for the answer!

dont know in miles but is is 197000km

the light is an faultcode for oxygen sensor, going to get that fixed!

alright! Gonna check those out after work tomorrow!

 

What year?

 

It's a 2004, facelift.

 

I have the same whine on my 2004 LS but car runs fine and no faults but I hear some just run like that!

 

Shouldn't be that loud. A good LS engine makes very little noise. For some, you need to check the tach to see if it's running (personal experience).

 

Update on this? What was the answer? Mine does the same thing..

 

Having the same problem it’s giving me a feeling that it might be the computer because I’m get camshaft position sensor both and both catalytic converter sensors and a random misfire but it don’t feel like it’s misfiring nor preforms like a misfire drives good just a little confused

 

Remove the serpentine belt, start it up, and see if the noise goes away. If it does, spin all the bearings and idlers in the serp belt path to see which one makes noise or is otherwise not completely smooth and replace. The belt might also be bad - slipping.

 

​​​​​​I’m getting the same thing with my ls430 a loud high pitch noise only at idle