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Buzzing sound under car

I just purchased a 01 nissan maxima I thought it had an exhaust leak but then noticed the sound changes with speed only. The noise is still present with ignition off while coasting. What could cause this exhaust like sound? Is is worst at about 35mph

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ARE YOU SURE IT'S EXHAUST SOUND COULD BE A BEARING ARE THERE OTHER SYMPTOMS YOU NOTICE THAT WOULD BE HELPFUL

Posted on Jul 14, 2013

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  • luke james Jul 14, 2013

    First thanks for the quick reply! I didn't think it was a bearing because it isn't noticeable at slow speeds, also the bearings are not getting hot. It is defiantly not from the exhaust just sounds like the exhaust from a rice burner, but related to the rolling chassis as the sound does not change with engine rpm but with speed only.

  • luke james Jul 14, 2013

    Also I do not know if this could be related but i noticed the when accelerating the car pulls quick to the right

  • NOMERCYINSITE Jul 15, 2013

    you definately have a problem and sound's like front right wheel check your brake pad's and see if they are worn ex bad a brake line can freeze now let me explain before someone contradick's the brake line has a inter liner whick which will pin hole when you apply the brake it will expand internally and prevent the fluid from flowing back the presseure is applying to the brake enough that it cause's the pad to scrub which in the car could sound like exhaust.this need's immediate attention.my reason is you said it pull's to the right which mean's something is dragging if not the brake lint then the caliper because it sound's like the brake is hanging and not releaseing check all you can check thoroughly and jack the right side up spin the wheel mash brake release then see if the wheel will turn free if not it is the caliper and or brake line

  • luke james Jul 16, 2013

    ok i jacked the car and tested the brake and wheel turns free. when i had it jack up i looked at the tie rod end and they look bad i think maybe that is causing the steering problem. and I think your first guess might be right about the wheel bearings I believe it is the rear. Is it a bad idea to drive it for awhile and see if it gets any worse and confirm that it is wheel bearings making the sound.

  • NOMERCYINSITE Jul 16, 2013

    Hi Luke Great now were getting somewhere I wish I had of ask you to try to move the front tire in and out to check play in the wheel there should be a slight play.Now that you have narrowed it down to a bearing this can be very dangerious some time's it can cause the wheel to freeze up, it can get bad enough to come apart and cause the wheel to come off,. Luckly for you the wheel bearing will warn you with a noise which you have found can be hard to identify. THE FRONT BEARING CAN BE DONE BY A HOME MECHANIC FAIRLY WELL,YOU MUST REMOVE THE BRAKE CALIPER DO NOT DISCONNECT THE BRAKE LINE THERE ARE TWO BOLT'S THAT HOLD THE CALIPER ON ETC.bUT LAT'S GET IT NARROWED DOWN AND i,LL EXPLAIN MORE. iF IT IS THE REAR THEN THAT'S MORE INVOLVED AND REQUIRE'S REMOVEING THE AXLE AND PRESSING THE BEARING OFF AND ON. BOTTOM LINE you can cause severe damage to the vehicle which could sky rocket in repair cost. if you will .at this point let's find out what it is exactly it will not be that expencive at this point. JUST A THOUGHT find a car dealer or the dealer you bought the care from and ask how much they would charge for an estimate to check yourm car and repair the problem usually they want your business and it's a courtecy none the less do it right away it's better safe than sorry and this is new to me and I do not want to give information that will cause anyone to get hurt let me know maybe it will be something you can do or not to serious and they can fix..

  • luke james Jul 16, 2013

    Thanks for the info I'm taking the car in today for a front alignment i will have them check the bearing too.

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