Help - What Can It Be?
06-21-2011, 10:53 AM
#1
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Help - What Can It Be?
So I have had my TL for about 6 weeks now. It is a 2008 with 70K miles. I had a couple issues that I am working on.
I do not feel any real vibrations at any speed. Is it possible for the wheel bearings to be bad and not have the wheel shake when you jack it up and jiggle?
What else can it be?
- Repeating road noise - This is the one I need help with. At speeds greater than 40 mph I hear a repeating humming sound. It gets worse as the speed increases. I had the dealership check the wheel bearings. I also asked them to check the suspension in general and found one issue with the sway bar. That is being replaced this week.
- Bent wheels - I had one replaced by the dealership before I bought the car and I replaced the less visible one last week. The road noise did not change with the new wheel.
- Tires - There were 2 tires that were cupped when I bought the car. I think the previous owner did not rotate them enough because they had considerably more thread on them. The dealership cut me a check for the tires and I picked up a set of DWS. The road noise did not change with the tires.
- Idle was a bit rough - Dealership neutralized the motor and reattached a loose vacuum hose and it is smooth as silk. I can hardly tell the car is running when it is idling.
I do not feel any real vibrations at any speed. Is it possible for the wheel bearings to be bad and not have the wheel shake when you jack it up and jiggle?
What else can it be?
06-21-2011, 11:46 AM
#2
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1) Did the DWS tires go on the front or back? Try moving the front tires to the back and vice versa to eliminate the possibility that the noise is from the tires.
2) Check underneath the car to make sure nothing (like a cloth, back, etc.) is caught in the undercarriage or in a heat shield.
3) Check to see if the humming noise changes when you have the windows and sunroof open-- try it one glass panel at a time, to see if it's a weatherstripping/seal problem.
4) Is the "humming" metallic in nature? If so, check the brake calipers, brake dust shields, parking brake adjustment and the heat shield near the cats (although the heat shield problem usually is a rattle at idle or just off idle).
G/L.
2) Check underneath the car to make sure nothing (like a cloth, back, etc.) is caught in the undercarriage or in a heat shield.
3) Check to see if the humming noise changes when you have the windows and sunroof open-- try it one glass panel at a time, to see if it's a weatherstripping/seal problem.
4) Is the "humming" metallic in nature? If so, check the brake calipers, brake dust shields, parking brake adjustment and the heat shield near the cats (although the heat shield problem usually is a rattle at idle or just off idle).
G/L.
06-21-2011, 11:54 AM
#3
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1) Did the DWS tires go on the front or back? Try moving the front tires to the back and vice versa to eliminate the possibility that the noise is from the tires.
2) Check underneath the car to make sure nothing (like a cloth, back, etc.) is caught in the undercarriage or in a heat shield.
3) Check to see if the humming noise changes when you have the windows and sunroof open-- try it one glass panel at a time, to see if it's a weatherstripping/seal problem.
4) Is the "humming" metallic in nature? If so, check the brake calipers, brake dust shields, parking brake adjustment and the heat shield near the cats (although the heat shield problem usually is a rattle at idle or just off idle).
G/L.
2) Check underneath the car to make sure nothing (like a cloth, back, etc.) is caught in the undercarriage or in a heat shield.
3) Check to see if the humming noise changes when you have the windows and sunroof open-- try it one glass panel at a time, to see if it's a weatherstripping/seal problem.
4) Is the "humming" metallic in nature? If so, check the brake calipers, brake dust shields, parking brake adjustment and the heat shield near the cats (although the heat shield problem usually is a rattle at idle or just off idle).
G/L.
Rolling the rear windows down makes it should like a helicopter but I cannot isolate the sound when the windows are down because it is more pronounced at higher speeds.
It is not a rattle. The noise sounds more like a repeating rumble than metallic. I will have them check the brakes on Friday because those were new. Maybe the parking brake needs adjusting. No brake odors though.
06-21-2011, 12:11 PM
#4
Yes it's possible. To check if it's a rear bearing, get up to speed where the noise starts. Turn the steering wheel left. Does the noise go away? If it does, it's a left rear bearing. If not, turn the wheel right. Does the noise go away? If it does, then it's the right rear. If it doesn't go away, then it's possible it's a front bearing.
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RaviNJCLs (06-21-2011)
06-21-2011, 12:17 PM
#5
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Yes it's possible. To check if it's a rear bearing, get up to speed where the noise starts. Turn the steering wheel left. Does the noise go away? If it does, it's a left rear bearing. If not, turn the wheel right. Does the noise go away? If it does, then it's the right rear. If it doesn't go away, then it's possible it's a front bearing.
06-21-2011, 12:36 PM
#7
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I asked Acura to swap the wheels with another one on the lot and prove to me that the issue is with the tires. We'll see if that happens. I think it sounds logical.
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06-21-2011, 04:01 PM
#10
Suzuka Master
06-21-2011, 07:55 PM
#12
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It may be. I drove it home this evening and did the swerve test to see if it may be the bearings. Then I jacked the car up and took a closer look at the suspension including trying to shake the wheel. Damn thing will not budge at all. We'll see what Acura says on Friday and I am taking it back to the tire shop this weekend for a rotation and check.
