I have a 2010 TL and heard some squealing coming from what I thought was the drive belt. It only squealed when the care was drivin approximately 25 mph and up but not at idle or when the car is cold. I replaced the drive belt but thay didn't solve the issue. Anyone with simular plz comment, I'm unsure and much rather do the the job as opposed to going to the dealer.

 

Could be the belt tensioner or the power steering pump. Are you sure it's speed dependent and not RPM dependent?

 

4G TL has electric steering! No PS pump! Probably the belt tensioner. How many miles on the car?

 

Was wondering why I couldn't find my PS pump.

 

I don't think it's the power steering pump, I've had no issues whatsoever with my power steering. Though, I may jus go ahead and change that tensioner though.

 

you can use a long screw driver as a "stethoscope" to help locate the bad component. As said above, its probably a failing belt tensioner for the accessory belt

 

I believe we might have the same problem and I am pulling my hair out trying to find it. Here's what I've deduced so far.

-It is dependent on the speed of the final drive, not engine or input shaft and input gear related.
-It starts abruptly at 25-30 miles an hour, and while changing volume, does NOT change pitch as you accelerate.
-Changing gears/RPM makes no difference, nor does turning the steering wheel
-It has grown loud enough that it can now be heard with the passenger side window down, which is where the sound seems to emanate from (passenger side front)

I have done the following since the noise began, both to troubleshoot the problem, and in the course of general maintenance-

-Changed motor oil
-Changed transmission oil
-Changed transfer case fluid
-Changed rear differential fluid
-Rotated tires
-Changed rotors and pads (while doing this I inspected the backing plates, etc for any slight contact issues
-Changed serpentine belt
-Changed engine air filter
-Changed cabin air filter

The noise has grown progressively louder, and none of the above maintenance items made it louder/quieter after performing them. I consider myself mechanically savvy, and have done everything from changing timing belts on Honda V-6 engines multiple times, to changing out struts and shocks. I would rate myself as an intermediate skill level automotive-wise.

This one has me stumped. I'm almost wondering if it is some sort of bizarre wind noise. I have tried turning the A/C on/off, driving with the brakes lightly depressed, and even gently engaging the parking brake looking for a change, but have not found any way to alter the noise to at least narrow the field down of likely problem areas.

WTF?!?!?!

 

Are you referring to the squeal?
I had it and misdiagnosed it as a screech and replaced my brake pads first. My independent mechanic drove it and said that it was not brake noise and it sounded more like rubber against metal. He hoisted it up on his alignment machine and sure enough it was the bearing of the drive shaft/prop shaft. It was the bearing closest to the rear differential. There is what looks like a rubber cover surrounding it and there's where the noise came from.
I heard it loudest when my front passenger window was open. When the Acura technician rode with me, he insisted he heard it from the drive shaft tunnel in the middle of the car more. Anyway if you start hearing them at lower speeds, it has started getting worse. Initially you can only hear it at 80kmh or more. Mine started there and in a couple of months I could hear them at 45kmh.
Tell a technician to get in the car with you to see. Tun off the AC and audio off. They replace the whole shaft and not just he bearings. In my case they replaced the heat shield too even though it was not listed in the work order. I was lucky cause it was quite a bit rusted and I only found out when I got under it to spray some undercoating. I was surprised to see a shiny new heat shield.

 

Thanks LNJ. You can disregard the PM I sent. This will help me out perfectly. My mailbox was full, anyways, which is why I couldn't receive it.

Thanks,

Rich

 

I have noticed this on the 2012 TL I just acquired. It only makes noise above 25-30 mph. I though it was tires, but the symptoms listed above are exactly what I am hearing. The car only has 27K miles. Does the driveline warranty cover the shaft replacement?

 

Bump. Car has started to make the same noise when cold, already replaced the accessory belt but its still there at around 1000-2k rpms. I'm going to tackle the belt tensioner pulley next. Now since you apply a "loosening force (CCW)" to the belt tensioner to relieve pressure to the belt, do you need to turn the bolt clockwise to loosen the pulley bolt?

 

Replying to my own post.... Changed out my accessory belt tensioner pulley and no more noises from engine bay, silky smooth. Just for the record the pulley bolt loosens off clockwise as the belt rotates around CCW on the pulley.

 

Were you able to change the pulley with out removing the tensioner assembly ?

 

Yes.

 

Awesome, thank you. I am having the same problem, mine is an intermittent whine from the belt side of the engine and i can jiggle the tensioner pulley with my hand.

 

I used a 14mm wrench with a 22mm buddy. The pulley bolt torque wasn't all that much.

 

thanks, just changed it out. the belt was a bitch to get back on