Whistle AP1
Joined: Sep 2004
Posts: 1,222
Likes: 222
From: stockbridge
Joined: Aug 2012
Posts: 8,750
Likes: 1,855
Sounds more like a high frequency ringing, not a whistle. So like something vibrating. Something light, like exhaust heat shield.
Poke around with pressing something against various places under hood, to immobilize whatever might be loose and ringing. Start with exhaust heat shields, working down to cat area. Shields around exhaust, shields attached to body.
Also try the large, black battery heat shield.
Then proceed to anywhere you can see or think of. Experiment.
It could also be a serp belt pulley bearing. Easy to rule out, just remove belt, see if issue goes away. Don't even need to remove belt, just undo belt from, say, water pump pulley, so its loose.
Poke around with pressing something against various places under hood, to immobilize whatever might be loose and ringing. Start with exhaust heat shields, working down to cat area. Shields around exhaust, shields attached to body.
Also try the large, black battery heat shield.
Then proceed to anywhere you can see or think of. Experiment.
It could also be a serp belt pulley bearing. Easy to rule out, just remove belt, see if issue goes away. Don't even need to remove belt, just undo belt from, say, water pump pulley, so its loose.
Joined: Sep 2004
Posts: 1,222
Likes: 222
From: stockbridge
Sounds more like a high frequency ringing, not a whistle. So like something vibrating. Something light, like exhaust heat shield.
Poke around with pressing something against various places under hood, to immobilize whatever might be loose and ringing. Start with exhaust heat shields, working down to cat area. Shields around exhaust, shields attached to body.
Also try the large, black battery heat shield.
Then proceed to anywhere you can see or think of. Experiment.
It could also be a serp belt pulley bearing. Easy to rule out, just remove belt, see if issue goes away. Don't even need to remove belt, just undo belt from, say, water pump pulley, so its loose.
Poke around with pressing something against various places under hood, to immobilize whatever might be loose and ringing. Start with exhaust heat shields, working down to cat area. Shields around exhaust, shields attached to body.
Also try the large, black battery heat shield.
Then proceed to anywhere you can see or think of. Experiment.
It could also be a serp belt pulley bearing. Easy to rule out, just remove belt, see if issue goes away. Don't even need to remove belt, just undo belt from, say, water pump pulley, so its loose.
Last edited by spider2k; May 30, 2025 at 05:15 PM.
Thread Starter
Registered User
Joined: May 2025
Posts: 3
Likes: 1
Sounds more like a high frequency ringing, not a whistle. So like something vibrating. Something light, like exhaust heat shield.
Poke around with pressing something against various places under hood, to immobilize whatever might be loose and ringing. Start with exhaust heat shields, working down to cat area. Shields around exhaust, shields attached to body.
Also try the large, black battery heat shield.
Then proceed to anywhere you can see or think of. Experiment.
It could also be a serp belt pulley bearing. Easy to rule out, just remove belt, see if issue goes away. Don't even need to remove belt, just undo belt from, say, water pump pulley, so its loose.
Poke around with pressing something against various places under hood, to immobilize whatever might be loose and ringing. Start with exhaust heat shields, working down to cat area. Shields around exhaust, shields attached to body.
Also try the large, black battery heat shield.
Then proceed to anywhere you can see or think of. Experiment.
It could also be a serp belt pulley bearing. Easy to rule out, just remove belt, see if issue goes away. Don't even need to remove belt, just undo belt from, say, water pump pulley, so its loose.
