Humming above 20mph
10-13-20, 05:28 AM
#1
Rookie
Thread Starter
Humming above 20mph
My girls 08 350 hums above 20mph. I keep thinking wheel bearing but it's been going on for MONTHS. every time I jack it up I feel no movement in any of the wheels. I thought front passenger side when I first heard it, now that I'm trying to fix it so she can trade it/keep it I strongly feel it is the driver side.
Now the weird thing is, if I let it coast, at almost exactly 20mph it will feel like it "frees" up (it's very noticeable, like I was riding the brakes and then let go) and stop humming completely. Any ideas?
Now the weird thing is, if I let it coast, at almost exactly 20mph it will feel like it "frees" up (it's very noticeable, like I was riding the brakes and then let go) and stop humming completely. Any ideas?
10-17-20, 02:47 PM
#3
Rookie
Thread Starter
To make matters worse my gf keeps telling me the car sometimes brakes/pulls/??? when in corners. So it confused me more as I've never felt that, only heard the hum.
Now if it is her tire, what am I looking for? And the tire doesn't sound like the culprit of the 'release' at 20mph. It's always at almost 20mph exactly.
10-17-20, 05:14 PM
#4
Driver School Candidate
Join Date: Oct 2020
Location: New York
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
My girls 08 350 hums above 20mph. I keep thinking wheel bearing but it's been going on for MONTHS. every time I jack it up I feel no movement in any of the wheels. I thought front passenger side when I first heard it, now that I'm trying to fix it so she can trade it/keep it I strongly feel it is the driver side.
Now the weird thing is, if I let it coast, at almost exactly 20mph it will feel like it "frees" up (it's very noticeable, like I was riding the brakes and then let go) and stop humming completely. Any ideas?
Now the weird thing is, if I let it coast, at almost exactly 20mph it will feel like it "frees" up (it's very noticeable, like I was riding the brakes and then let go) and stop humming completely. Any ideas?
07-11-21, 01:50 PM
#5
yep, rx's do go thru wheel bearings. not sure why.
GFs "pulling/braking"...could be the ABS brakes firing.
do you have the same condition wheels on front and back. my rx did not like it when i had older snows on the front and brand new snows on the rear. the abs was firing when i took a highspeed turn (like on a highway exit ramp), put the summer tires back on ( all four equally worn), and the ABS problem went away.
GFs "pulling/braking"...could be the ABS brakes firing.
do you have the same condition wheels on front and back. my rx did not like it when i had older snows on the front and brand new snows on the rear. the abs was firing when i took a highspeed turn (like on a highway exit ramp), put the summer tires back on ( all four equally worn), and the ABS problem went away.
07-11-21, 02:39 PM
#6
Pole Position
Different brand & types of tires do make a difference.......If it is a wheel bearing, it'd be getting worst as you drive it.
07-14-21, 06:28 AM
#7
Could be brakes dragging due to calipers sticking. The only way to check this is to remove each caliper and verify free motion. I just had to replace all four calipers just for this reason, but I was also getting steering wheel vibration.
To properly check your wheel bearings, you must remove the brake calipers as they can limit the motion you would normally feel when a bearing goes bad.
Good luck!
Bob
To properly check your wheel bearings, you must remove the brake calipers as they can limit the motion you would normally feel when a bearing goes bad.
Good luck!
Bob
Thread
Thread Starter
Forum
Replies
Last Post
stevek57
RX - 2nd Gen (2004-2009)
2
08-21-17 12:51 PM