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Whining Sound

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Old 10-12-2017, 07:20 AM   #1
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Whining Sound

Good morning!

Since two days I've been hearing a whining sound. It's small, but evident. It's not constant, and while driving it's hard to notice. When I start the car, in the garage I hear it. And it goes up and down as I rev the gas pedal.

Is this an alternator?

Last edited by RL09; 10-12-2017 at 07:25 AM.
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Old 10-12-2017, 07:41 AM   #2
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Good Morning!
check out the Power steering fluid reservoir. is it full? or low on fluid?
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Old 10-12-2017, 07:44 AM   #3
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use a screwdriver as stethoscope and place it on alternator.

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Old 10-12-2017, 08:02 AM   #4
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Quote:
Originally Posted by justnspace View Post
Good Morning!
check out the Power steering fluid reservoir. is it full? or low on fluid?
It's hard to tell. Can't see through it. But, looking from the top, it looks like close to lower level line. could be slightly low.

Isn't there a dash light to tell if its low? can slightly low cause this?

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use a screwdriver as stethoscope and place it on alternator.

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How do you do that?
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Old 10-12-2017, 08:06 AM   #5
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The list of reasons for a whine listed on the forum here are scary:

Tranny.
Cam shaft.
Alternator.

I have been feeling that when i slow down to take a turn, and don't press a little bit on pedal to continue on, its like the tranny doesn't shift down, unless i press harder on the gas.
https://acurazine.com/forums/second-...ission-962854/
Gulp.
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Old 10-12-2017, 08:07 AM   #6
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yes, the power steering is a belt driven pump. if reservoir is low, air is introduced into the system making a whining and groaning sound.
Fill reservoir up with Honda Power Steering fluid
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Old 10-12-2017, 08:09 AM   #7
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It has to go to upper line only right?

But look, it's probably even on lower level mark.

Is it supposed to go all the way up or on the upper mark?
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Old 10-12-2017, 08:17 AM   #8
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yes, start with the easy things first!
go to Honda dealer and pick up Honda Power steering fluid.

Fill to full line/Max line.
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Old 10-12-2017, 08:19 AM   #9
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Gonna do that today.

I can't see the liquid inside to measure where the limit is. Bottle is white doesn't look dirty... How do you go around that?
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Old 10-12-2017, 08:28 AM   #10
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take a light source to it. can be a flashlight or use the sun!
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Old 10-12-2017, 08:30 AM   #11
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I used the phone. maybe too bright. I'll check it outside.

Thanks Justin.
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Old 10-12-2017, 08:34 AM   #12
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Let us know what you find! if at full line, no need to buy the fluid.
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Old 10-12-2017, 09:12 AM   #13
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Sunlight shows you. The iPhone light doesn't... It's at just above the lower level. Is that enough to make a tiny whine?

The whine is very ... slim.. not loud.. it seems to be coming from the front, not below.. and when i moved the car.. it went away...

I'd add drive belt to the list above, but that was changed last year...

And it's not a screech.. it's a whine..goes up and down when applying and releasing the gas pedal.

What could it be?
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Old 10-12-2017, 09:22 AM   #14
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Quote:
Originally Posted by RL09 View Post
Sunlight shows you. The iPhone light doesn't... It's at just above the lower level. Is that enough to make a tiny whine?

The whine is very ... slim.. not loud.. it seems to be coming from the front, not below.. and when i moved the car.. it went away...

I'd add drive belt to the list above, but that was changed last year...

And it's not a screech.. it's a whine..goes up and down when applying and releasing the gas pedal.

What could it be?
Does it go up and down when the car is in gear or only in park? That should help narrow if its motor/accessory related or driveline related.
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Old 10-12-2017, 09:43 AM   #15
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Originally Posted by projektvertx View Post
Does it go up and down when the car is in gear or only in park? That should help narrow if its motor/accessory related or driveline related.
Well right now i can no longer tell if its normal engine sound or a whine. It may have gone for now.

What I just did is press all brakes and rev, no difference or whine detected.

The fact that it comes and goes made me suspect the alternator originally.
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Old 10-12-2017, 12:16 PM   #16
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I have this same issue but it comes ans goes and usually around 40-60 mph. When I release the gas it stops but would whine when on the gas. It doesn't happen all the time, so I've been ignoring the issue. Could it be the alternator? Im looking forward to your findings!
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Old 10-12-2017, 12:22 PM   #17
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Quote:
Originally Posted by HDNBenjamin View Post
I have this same issue but it comes ans goes and usually around 40-60 mph. When I release the gas it stops but would whine when on the gas. It doesn't happen all the time, so I've been ignoring the issue. Could it be the alternator? Im looking forward to your findings!
that describes the driveshaft whine, i believe.

thus why it's important to list your symptoms, as your symptoms are completely different than OPs
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Old 10-12-2017, 12:31 PM   #18
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Quote:
Originally Posted by justnspace View Post
that describes the driveshaft whine, i believe.

thus why it's important to list your symptoms, as your symptoms are completely different than OPs
Thanks for the feedback. I'll just ignore it as it is very intermittent. Still loving the RL after all these years, not to mention it has been nice not having a car payment.
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Old 10-12-2017, 02:01 PM   #19
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Quote:
Originally Posted by RL09 View Post
Sunlight shows you. The iPhone light doesn't... It's at just above the lower level. Is that enough to make a tiny whine?

The whine is very ... slim.. not loud.. it seems to be coming from the front, not below.. and when i moved the car.. it went away...

I'd add drive belt to the list above, but that was changed last year...

And it's not a screech.. it's a whine..goes up and down when applying and releasing the gas pedal.

What could it be?
Have you done any work recently to the car? Pulleys/tensioners on way to dirt nap? Is noise coming from speakers any audio work done that may been poorly grounded?
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Old 10-13-2017, 07:31 AM   #20
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Quote:
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Have you done any work recently to the car? Pulleys/tensioners on way to dirt nap? Is noise coming from speakers any audio work done that may been poorly grounded?
Other than putting in 1 liter of a cleaning type of engine oil and wondered if i shouldn't just always put the exact same oil in and not mix, no. And I've been feeling this sometimes.

No it's not the speakers, i hear the sound outside the car, not in it. If I close the windows i don't hear it.

It's very slim... I;'m gonna go for transmission oil change and have them top off the PS oil as Justin said just to make sure... Maybe ask them to make sure there's no air inside? Is that easy to do or a big bill?

Hope its not the tranny or cam shaft.

Given this car's electric load, I'd happily change the alternator.
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Old 10-13-2017, 07:55 AM   #21
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I think you're webMD'ing yourself.
Start with the easy things! if fluid is low, top off! then proceed from there.
if whining is in the 30-40mph range, it's the driveshaft.
etc. etc.
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Old 10-13-2017, 08:39 AM   #22
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I'd say it could be the tensioner going out.

How the hell could it be the camshaft?
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Old 10-13-2017, 08:41 AM   #23
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^that's precisely how I got this crab avatar.
uhh, google...what are these red itchy spots?!?!?!
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Old 10-13-2017, 08:44 AM   #24
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I was going to say it's probably a pulley on the tensioner assembly. I had mine get noisy every 60K on my TL. Sounded like it was supercharged.

I was going to make a joke about RL making a thread about whining, but I decided not to.
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Old 10-13-2017, 10:05 AM   #25
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I had read a thread yesterday where Majofo was mentioning cam, shaft, something. I forgot...

The whine is tiny so once i'm driving, wind noise let alone engine will just mask it. I don't know if its there at 40+mph...

But the tensioner was changed and the bearings together with TB & pump not even a year ago..

Tranny oil was due this summer and I put it off.. It's still very clear on the stick. But I gonna do it now.
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Old 10-13-2017, 10:22 AM   #26
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Sorry. Crank shaft.

https://acurazine.com/forums/3g-tl-p...%2A%2A-707151/

That OP seemed to be having a similar issue.
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Old 10-13-2017, 11:02 AM   #27
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If you tested each component in question in engine bay using a long screwdriver or stethoscope, assuming the noise is reproducible while car is not in motion, and noise not heard then any more guesses are futile here. I seriously doubt cam or crankshaft if it is you got bigger issues man. Hell could be differential. Too many variables. Take it to mechanic for diagnosis.
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Old 10-13-2017, 06:00 PM   #28
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I am interested in this post because I have had the same thing happen to me, I have a 2005 rl with 108000 miles and have experienced this same issue twice.
The last time 1 month ago I put a screw driver on the alternator and heard the bearing noise. Went to the shop to discus replacing the alternator and the need to remove the cooling fans to get the alternator out. but when I got to the repair shop the noise stopped and hasn't recurred again so i'll keep watching it and replace it when it either gets worse or I have a charging issue. Good luck with your issue.
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Old 10-16-2017, 02:35 PM   #29
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Well just my luck. Pulled into the under ground parking at work today a loud whining noise can be heard from the engine bay at low speeds. It sounds like a mechanical whining noise, if that makes any sense. I am still at work and a bit afraid to drive it home later, my commute is over one hour in mostly stop and go traffic.

I suspect it is either the alternator going bad or the power steering. Will update once resolved. Hopefully soon.
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Old 10-16-2017, 08:54 PM   #30
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Drove home from my one hour commute. Scared shitless and hoping the alternator doesn't die in traffic. Luckily, after 15 min of driving the whining noise stopped. At home, I disconnected the negative of the battery and the car still ran, so that tells me it isn't the alternator. I then checked the power steering fluid reserve and it was right at the low mark. I used a turkey baster and removed some of the fluid out and it is dark as night (picture below). I filled with new Acura power steering fluid. Needless to say, I will get a full flush and new fluid in ASAP, and hopefully save the power steering from failure.

Does anyone know if power steering fluid damage rubber hoses? I spilled some on the power steering hoses during the process.
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Old 10-17-2017, 01:19 PM   #31
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Update. Still no whining sound even with a very long commute today. Will do a full flush with new power steering reservoir this weekend. So, for people with similar experience...check your power steering fluid and ensure it isnt dark or low!
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