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#4125528 - 10/24/21 01:14 PM Humming/Whining noise known sources? 2007 Town Car
alumarine Offline
Rookie

Registered: 02/11/19
Posts: 80
Loc: Manitoba, Canada
I know noises are hard to identify on the internet but I'm more wanting to know if there are any known sources.

On my 2007 Town Car I have a humming or whine that I can't identify.

It's noticeable between 30-40 mph but I suspect I can't hear it at faster speeds due to road noise.

When going at a constant speed or slightly accelerating between 30-40 mph I hear a hum or whining that sounds like a rear diff. The noise goes away if I take my foot off the gas.

If I sit in the back seat while someone else is driving I can't hear the noise at all. I realize that doesn't eliminate the diff as the source.

Are there any other known sources of humming/whining sources under these circumstances?

I did install a Ford Traction Lock 8000 miles ago but don't recall if the noise was there before that.

thanks
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2007 Lincoln Town Car Signature L

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#4125622 - 10/25/21 07:35 AM Re: Humming/Whining noise known sources? 2007 Town Car [Re: alumarine]
Rootintootin Offline
Climber

Registered: 02/26/08
Posts: 687
Loc: North Carolina
I was having humming, whining noises that I thought were transmission related. I always thought when I heard the exact same noise in cars driving by that they were having transmission issues. But that was just guessing. I'm glad I wasn't betting on it.

Mine turned out to be the alternator bearing. And the tensioner pulley. And the idler pulley. I had to replace all 3 to eliminate the whine. Just replacing the alternator lessened the noise, but didn't stop it. And there seemed to be a break-in period of a few days after replacing the pulleys before the noise was gone completely. I was kind of sweating the ps pump for a while there.

Now, when I hear that noise in someone's car, I remark that they ought to have those 3 things looked at. Most people don't even look at it as a problem.
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#4125696 - 10/25/21 11:41 AM Re: Humming/Whining noise known sources? 2007 Town Car [Re: alumarine]
alumarine Offline
Rookie

Registered: 02/11/19
Posts: 80
Loc: Manitoba, Canada
I was also wondering if it was something motor related or transmission.

When cruising at 30 mph if put it in neutral the noise stops. It's definitely load related.

I was thinking of removing the serpentine belt and see the noise is still there when driving at 30. I'd only drive it for less than a minute so wouldn't worry about overheating.

Not sure if that's a good thing to do or not. I realize I wouldn't have power steering.
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#4125726 - 10/25/21 01:50 PM Re: Humming/Whining noise known sources? 2007 Town Car [Re: alumarine]
GMUE03 Offline
Rookie

Registered: 12/23/18
Posts: 79
Loc: Florida
My thread might help, refer to the video posted in the thread, if it sounds similar we determined it’s likely the pinion bearing
https://www.crownvic.net/ubbthreads/ubbt...536#Post4125536
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#4126312 - 10/28/21 08:26 PM Re: Humming/Whining noise known sources? 2007 Town Car [Re: alumarine]
alumarine Offline
Rookie

Registered: 02/11/19
Posts: 80
Loc: Manitoba, Canada
Jacked the back wheels off the ground and had a friend run it between 30 and 40 mph.
Could not hear the whining noise.
Used a stethoscope on the axle ends and around the diff and heard nothing bad.
Walked around the car and heard nothing.

Seems whatever makes the noise only does it when the car is moving or under load.

Did find out the ABS throws a fit when the back wheels are spinning and the front aren't.
Had to reset the ABS DTC. Next time I'll turn the traction control off and see if that makes the ABS happy.
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#4126400 - 10/29/21 11:55 AM Re: Humming/Whining noise known sources? 2007 Town Car [Re: alumarine]
TCowner Offline
Member

Registered: 03/20/02
Posts: 193
Loc: Naperville, IL
I've had 6 different Panthers, and they all seem to be different as far as driveline/gear noise at low speeds, but they all have it in some form. It was even called out in a couple of the car reviews back at the time. My current 2007 Town Car (54K miles) is super quiet. My last one, a 2008 MGM that I drove from 85K to 140K miles, had a noticeable noise from slow speeds up to about 30mph, but never missed a beat.
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#4126410 - 10/29/21 03:36 PM Re: Humming/Whining noise known sources? 2007 Town Car [Re: alumarine]
Old_Guy_Stu Offline

Over the Hill

Registered: 04/28/19
Posts: 2703
Loc: Cleveland, OH
Could be front wheel bearings, tires, torque converter... None of which would really show up with the wheels off the ground (no load).
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1988 CVLX Formal Roof (Love Boat) POTM July 2019, Aug 2020, & Oct 2021, 56K
E-code lights w/ relays, LEDs w/ switchbacks, 15x8 Ansen slots w/ 255/60 BFG's, Kenwood stereo, various hacks.
This, of course, was merely the semi-delirious notion of a fever-patient, but I remember that it struck me at the time as being eminently practical and feasible.

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#4126412 - 10/29/21 04:34 PM Re: Humming/Whining noise known sources? 2007 Town Car [Re: TCowner]
alumarine Offline
Rookie

Registered: 02/11/19
Posts: 80
Loc: Manitoba, Canada
Originally Posted By TCowner
I've had 6 different Panthers, and they all seem to be different as far as driveline/gear noise at low speeds, but they all have it in some form. It was even called out in a couple of the car reviews back at the time. My current 2007 Town Car (54K miles) is super quiet. My last one, a 2008 MGM that I drove from 85K to 140K miles, had a noticeable noise from slow speeds up to about 30mph, but never missed a beat.

That's good to know that some of them are noisier than others.
thanks
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#4126416 - 10/29/21 04:36 PM Re: Humming/Whining noise known sources? 2007 Town Car [Re: Old_Guy_Stu]
alumarine Offline
Rookie

Registered: 02/11/19
Posts: 80
Loc: Manitoba, Canada
Originally Posted By Old_Guy_Stu
Could be front wheel bearings, tires, torque converter... None of which would really show up with the wheels off the ground (no load).

That makes sense.
Would a "noisy" torque converter cause issues?
Would a noisy diff or rear always make noise even with no load?
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#4126446 - 10/29/21 09:28 PM Re: Humming/Whining noise known sources? 2007 Town Car [Re: alumarine]
Old_Guy_Stu Offline

Over the Hill

Registered: 04/28/19
Posts: 2703
Loc: Cleveland, OH
The converter could be serious, or it could just be noisy. Drop the pan and see how much metal is in it. Never hurts to change the fluid anyway. You should be in lockup at 40 mph, but I don't know if the late-models like yours do it in the TC or in the trans.

As for the rear end, load makes a difference. You could fudge it by applying the brakes (lightly, just enough to bog the engine) with the wheels off the ground, just not for long.
_________________________

1988 CVLX Formal Roof (Love Boat) POTM July 2019, Aug 2020, & Oct 2021, 56K
E-code lights w/ relays, LEDs w/ switchbacks, 15x8 Ansen slots w/ 255/60 BFG's, Kenwood stereo, various hacks.
This, of course, was merely the semi-delirious notion of a fever-patient, but I remember that it struck me at the time as being eminently practical and feasible.

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#4126450 - 10/29/21 10:02 PM Re: Humming/Whining noise known sources? 2007 Town Car [Re: alumarine]
ColescottFTW Offline
Spreadneck
Rookie

Registered: 10/18/20
Posts: 60
Loc: Portland
Every Vic I’ve had had whine/hum.


I think it’s fairly normal for these vehicles, for whatever reason.

I was freaking out about a Vic I had two years ago, and folks on the forums also told me it was normal. Never ran into an issue.

Maybe change the fluids, if you’re concerned. New trans filter and rear diff fluid

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#4126466 - 10/30/21 12:22 AM Re: Humming/Whining noise known sources? 2007 Town Car [Re: alumarine]
D-Fenz Offline

Poobah

Registered: 10/23/03
Posts: 6736
Loc: Free America (WV)
Yeah all of mine have made noises, I think it's just not being made to super tight tolerances, which actually probably helps some of the durability. Shrug. Like everyone said, change/check the fluids. Alternators hum too.
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#4126492 - 10/30/21 12:16 PM Re: Humming/Whining noise known sources? 2007 Town Car [Re: alumarine]
alumarine Offline
Rookie

Registered: 02/11/19
Posts: 80
Loc: Manitoba, Canada
Maybe I'll worry about something else then.
Both transmission and diff fluids are fairly new although next spring I might change both just to see what they look like.

thanks for the help!
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