whistling noise all of a sudden
11-08-2010, 02:50 PM
#1
Teching In
Thread Starter
Join Date: Oct 2010
Location: Spartanburg
Posts: 11
Likes: 0
Received 0 Likes
on
0 Posts
whistling noise all of a sudden I took my car out the other night and ran it pretty hard. Didnt drive it the next day and got in it today. Started it up and went to school. After the car ran for a while and got up to temperature I started hearing whistling noise. It sounds like its coming from the engine bay and dont think its the belt. What could be causing this whistling noise? It doesnt whistle at start up just after the motor is at normal running temp. Help me its already driving me crazy.
11-08-2010, 05:14 PM
#2
Staging Lane
Join Date: Nov 2009
Location: The End of My Rope
Posts: 77
Likes: 0
Received 0 Likes
on
0 Posts
Not sure about opens/closes when the engine gets to operating temp, but I know EGR does certain things between cold/normal operating temps. Can't think of anything on that system that would whistle tho?
I know on all 3 LS1s that I've had, the idler pulley will whistle from wear and tear, but that would be all the time
I know on all 3 LS1s that I've had, the idler pulley will whistle from wear and tear, but that would be all the time
11-08-2010, 05:39 PM
#4
TECH Apprentice
iTrader: (31)
Join Date: Jul 2010
Location: Loganville, Ga
Posts: 301
Likes: 0
Received 0 Likes
on
0 Posts
I had a whistle noise the other day and it ended up being the a vacuum hose came off the throttle body. Check your vacuum lines and make sure they are not loose. It might not be the same thing but you never now.
11-08-2010, 07:29 PM
#5
whistling noises are a sign of a vacuum leak somewhere. u gotta check throttle body gasket, intake manifold gasket, spray something in the creases and see if the sound goes away good luck!!
11-09-2010, 01:42 AM
#6
TECH Fanatic
Check your PCV valve hoses as well, sometimes pressure will make the valve whistle. fix is to run a breather, filter on the hose thats causing it
