Engine Whine
#1
02-16-2019, 08:10 PM
Engine Whine
Hey guys, hoping to get some answers here on a sound I’ve been hearing. I drive a 06’ coupe auto non revup 92,000 miles and since the day I’ve bought it, it’s made a faint whine noise. It’s more audiable on a cold engine and its barely audiable when warmed up. I uploaded a video of the sound I’m hearing on cold engine below. Ive already ruled out ac compressor, alternator, and power steering pump by removing the belts and starting the car. Sound was still there, if this is normal also please let me know! Thank you for any help!
#2
02-16-2019, 08:17 PM
Join Date: May 2017
Location: Washington State
Posts: 14,799
Received 2,457 Likes
on
2,151 Posts
Coupe 6MT Premium RAS
#7
02-17-2019, 07:01 AM
Join Date: Mar 2009
Location: By the sea, Tx
Posts: 18,301
Received 1,486 Likes
on
1,221 Posts
G35 sedan w/ too much money in mods
Trending Topics
#8
02-17-2019, 12:12 PM
Join Date: May 2017
Location: Washington State
Posts: 14,799
Received 2,457 Likes
on
2,151 Posts
Coupe 6MT Premium RAS
I don't hear anything abnormal aside from a little noise on the valvetrain which is expected from a 100k mile motor.
If you do think there's a problem take off the drive and accessory belt and spin each pulley by hand, should be 100% smooth, with a little resistance, zero noise. If you.can spin any of the and they just keep spinning for a dozen or more revolutions and have noise then they're worn and need replacing. If you've never replaced the adjuster pulleys for each belt I can almost guarantee they're shot with 100k on them.
Are you sure you're not hearing power steering whine? Does it get louder when you slightly turn the steering wheel with the hood open? If you havent replaced the PS fluid ever then buy a cheap turkey baster, suck the fluid out of the PS reservoir and refill it. Do that each week for a month and after 4 fluid swaps you've exchanged almost all the fluid which should he good for another 30k miles or so.
It's a good habit to just do a PS fluid exchange like that every 20-30k when you change fluid in the differential and transmission. It only holds 1qt of total volume
If you do think there's a problem take off the drive and accessory belt and spin each pulley by hand, should be 100% smooth, with a little resistance, zero noise. If you.can spin any of the and they just keep spinning for a dozen or more revolutions and have noise then they're worn and need replacing. If you've never replaced the adjuster pulleys for each belt I can almost guarantee they're shot with 100k on them.
Are you sure you're not hearing power steering whine? Does it get louder when you slightly turn the steering wheel with the hood open? If you havent replaced the PS fluid ever then buy a cheap turkey baster, suck the fluid out of the PS reservoir and refill it. Do that each week for a month and after 4 fluid swaps you've exchanged almost all the fluid which should he good for another 30k miles or so.
It's a good habit to just do a PS fluid exchange like that every 20-30k when you change fluid in the differential and transmission. It only holds 1qt of total volume
#9
02-17-2019, 02:08 PM
I don't hear anything abnormal aside from a little noise on the valvetrain which is expected from a 100k mile motor.
If you do think there's a problem take off the drive and accessory belt and spin each pulley by hand, should be 100% smooth, with a little resistance, zero noise. If you.can spin any of the and they just keep spinning for a dozen or more revolutions and have noise then they're worn and need replacing. If you've never replaced the adjuster pulleys for each belt I can almost guarantee they're shot with 100k on them.
Are you sure you're not hearing power steering whine? Does it get louder when you slightly turn the steering wheel with the hood open? If you havent replaced the PS fluid ever then buy a cheap turkey baster, suck the fluid out of the PS reservoir and refill it. Do that each week for a month and after 4 fluid swaps you've exchanged almost all the fluid which should he good for another 30k miles or so.
It's a good habit to just do a PS fluid exchange like that every 20-30k when you change fluid in the differential and transmission. It only holds 1qt of total volume
If you do think there's a problem take off the drive and accessory belt and spin each pulley by hand, should be 100% smooth, with a little resistance, zero noise. If you.can spin any of the and they just keep spinning for a dozen or more revolutions and have noise then they're worn and need replacing. If you've never replaced the adjuster pulleys for each belt I can almost guarantee they're shot with 100k on them.
Are you sure you're not hearing power steering whine? Does it get louder when you slightly turn the steering wheel with the hood open? If you havent replaced the PS fluid ever then buy a cheap turkey baster, suck the fluid out of the PS reservoir and refill it. Do that each week for a month and after 4 fluid swaps you've exchanged almost all the fluid which should he good for another 30k miles or so.
It's a good habit to just do a PS fluid exchange like that every 20-30k when you change fluid in the differential and transmission. It only holds 1qt of total volume
Actually in the video that I posted all the accessory belts are removed, so the car was just running off the battery for a few seconds while I filmed. I wanted to rule out all the pullys, alternator, power steering, and ac compressor from the start. It originally sounded like an old power steering pump or a bad alternator bearing to me but the car was still making the noise even without any of those components running.
To be thourogh ill take another video with revs this time and maybe some driving to see if I can better capture what im talking about.
#10
04-23-2019, 06:00 PM
Sorry for reviving this but I’ve been busy! So I found out the whine happens when the engine is cold. After about 10-15 minutes of driving it’s a lot less audible to the point that I can’t hear it. I uploaded another video to show what I’m talking about. It’s the whine that goes with the revs. Let me know what y’all think!
#11
04-25-2019, 11:04 AM
Join Date: Mar 2009
Location: By the sea, Tx
Posts: 18,301
Received 1,486 Likes
on
1,221 Posts
G35 sedan w/ too much money in mods
Thread
Thread Starter
Forum
Replies
Last Post
wallofgrath
Engine, Drivetrain & Forced-Induction
6
01-07-2013 10:36 PM
g8tor20
Audio, Video & Electronics
7
08-23-2006 04:02 PM