help diagnosing a sound - left front
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Elder User
Joined: Jan 2013
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From: Parker, CO
help diagnosing a sound - left front
I fixed one thing and another started. 
I had noticed while parking or when turning sharply a rotational knocking type sound from the front. Turned out both hubs were stuck (and the front axles were not spinning freely). After a quick drive in 4x4 low, they unstuck. Cool I thought.
I have also been noticing a hum coming from the left front. I can feel it in floor a bit. Its not super loud but its there. Not a grinding sound but more of a mid pitched hum, that's the best way I can describe it.
Is that a wheel bearing or something else?
Thanks!
I had noticed while parking or when turning sharply a rotational knocking type sound from the front. Turned out both hubs were stuck (and the front axles were not spinning freely). After a quick drive in 4x4 low, they unstuck. Cool I thought.
I have also been noticing a hum coming from the left front. I can feel it in floor a bit. Its not super loud but its there. Not a grinding sound but more of a mid pitched hum, that's the best way I can describe it.
Is that a wheel bearing or something else?
Thanks!
New User
Joined: Apr 2012
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Someone please chime in on this one! I'm having the same sound while turning but my Ex is 2wd. No rattling or shaking of any kind, just a low deep humming from the left front while turning. Goes away when the steering is str8. Any help appreciated. Not trying to hijack your thread...but thought we might be having the same type of issue. No change in pitch
More Turbo
Joined: Oct 2012
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From: Tampa, FL
Interesting... I'm having the same issue right now. Check out this thread and see if any of it pertains to you.
New User
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Thanks for the linked thread. I put on a aftermarket cat back and the sound started, so my guess is something moved a little up front. I'll have to pinpoint it now. Love this site and many folks on here. New it was something with the exhaust, since that's all I have changed.
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Elder User
Joined: Jan 2013
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From: Parker, CO
My sound isn't a rumbling or a roar and its not related to turning. I hear just driving down the road doing 45mph. Its probably sort of like the hum from aggressive tires only mine are not. Its not the tires...
I'm going to jack up the car this weekend and spin the left front and see if anything seems wrong.
I'm going to jack up the car this weekend and spin the left front and see if anything seems wrong.
New User
Joined: Apr 2012
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I had a similar problem with my honda and it was the wheel bearing, but maybe someone else can offer more technical advice.
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Postmaster
Joined: Aug 2012
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From: Westfield, Indiana
Thanks for the linked thread. I put on a aftermarket cat back and the sound started, so my guess is something moved a little up front. I'll have to pinpoint it now. Love this site and many folks on here. New it was something with the exhaust, since that's all I have changed.
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I don't know about the whirring noise but the chirping could easily be a leaking up-pipe or a leak in the pressurized charge air circuit. (anything from the intake filter all the way to the intake plenums.). If you notice it more under acceleration when the turbo starts making boost rather than gentle cruise or idle that is even more likely to be one of those things.
Lead Driver
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From: Northern California
I don't know about the whirring noise but the chirping could easily be a leaking up-pipe or a leak in the pressurized charge air circuit. (anything from the intake filter all the way to the intake plenums.). If you notice it more under acceleration when the turbo starts making boost rather than gentle cruise or idle that is even more likely to be one of those things.
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