Growling noise
Thread Starter
Racer
Joined: Apr 2007
Posts: 1,361
Likes: 48
From: seattle,wa
Growling noise
Last night i had this growling rumbling noise under the hood, its either a pulley, water pump or ac compressor,or ??
the noise lasted for 30 minutes until i shut the car off.
Now the weird thing is i drove the car this morning with ac on for 2 hours straight on the hiway and the noise is completely gone, your input is greatly appreciated.
1998 gs400 with 180k miles
the noise lasted for 30 minutes until i shut the car off.
Now the weird thing is i drove the car this morning with ac on for 2 hours straight on the hiway and the noise is completely gone, your input is greatly appreciated.
1998 gs400 with 180k miles
Maybe the alternator?
It can intermittently show signs of going bad until it finally goes. If you do hear it again, pull over and try winding down all 4 windows at the same time. Stand outside while doing this. If the growling sound gets louder it might very well be the alternator.
A method I used which was surprisingly very helpful is...use your phone to record audio...bring it close to each component. Hence bring it close to the alternator then the water pump, then idler pulley, etc.
Listen to the audio after and see where it is the loudest. Just remember the order you did it in.
It can intermittently show signs of going bad until it finally goes. If you do hear it again, pull over and try winding down all 4 windows at the same time. Stand outside while doing this. If the growling sound gets louder it might very well be the alternator.
A method I used which was surprisingly very helpful is...use your phone to record audio...bring it close to each component. Hence bring it close to the alternator then the water pump, then idler pulley, etc.
Listen to the audio after and see where it is the loudest. Just remember the order you did it in.
Thread Starter
Racer
Joined: Apr 2007
Posts: 1,361
Likes: 48
From: seattle,wa
Maybe the alternator?
It can intermittently show signs of going bad until it finally goes. If you do hear it again, pull over and try winding down all 4 windows at the same time. Stand outside while doing this. If the growling sound gets louder it might very well be the alternator.
A method I used which was surprisingly very helpful is...use your phone to record audio...bring it close to each component. Hence bring it close to the alternator then the water pump, then idler pulley, etc.
Listen to the audio after and see where it is the loudest. Just remember the order you did it in.
It can intermittently show signs of going bad until it finally goes. If you do hear it again, pull over and try winding down all 4 windows at the same time. Stand outside while doing this. If the growling sound gets louder it might very well be the alternator.
A method I used which was surprisingly very helpful is...use your phone to record audio...bring it close to each component. Hence bring it close to the alternator then the water pump, then idler pulley, etc.
Listen to the audio after and see where it is the loudest. Just remember the order you did it in.
The only thing now is waiting for the noise to reoccur, also i noticed that the top pulley 12 oclock, dosent rotate when in idle
Not sure how the V8 is set up but you should be able to pinpoint which side the noise is coming from. Then you can use the method of recording audio with your phone on whatever accessories / pulleys run on that side.
Just ensure to put the phone as close to each accessory as possible. By the way I just replace my alternator on a gs300 using this method over the weekend(didn't have a multimeter to test). However ended up getting a multimeter to test after to confirm it.
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Since the noise is gone, I wouldn't worry too much now. Would be hard to find the problem without the sound now.
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Thread Starter
Racer
Joined: Apr 2007
Posts: 1,361
Likes: 48
From: seattle,wa
I think your right, thanks for taking out the time to reply and to all who read the thread!
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