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Pulsating grinding noise from under the car


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YourMinky
User

Dec 22, 2017, 5:26 PM

Post #1 of 7 (304 views)
Pulsating grinding noise from under the car Sign In

The front driver side wheel has a new bearing on my 2000 Hyundai Elantra. When I drive the car it makes a pulsating grinding noise when the engine is cold. The grinding noise appears when the car hits 20 MPH and goes away after a few minutes of driving and does not return until everything is cold again. The noise is even louder if I rotate the steering to the right. Rotating the steering to the left makes the noise almost go away. It started happening a few days after all 4 tires were balanced and rotated. The pulsating grinding noise is new, before it was a constant humming grind when the engine was cold, not so loud, that eventually went away after driving for 30 minutes or so. The weird part is that the new pulsating grinding noise goes away after driving the car for a minute or two. Is it related to alignment, tire balancing or something else?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 22, 2017, 5:30 PM

Post #2 of 7 (302 views)
Re: Pulsating grinding noise from under the car Sign In

My guess is you moved a cupped up tire from the rear to the front and that created the noise. Try rotating them back and see if it goes away or moves. That's a common thing to happen to the rear tires of a FWD car, especially if they are left there too long.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



YourMinky
User

Dec 22, 2017, 6:42 PM

Post #3 of 7 (291 views)
Re: Pulsating grinding noise from under the car Sign In

Thanks for your comment. The noise did not appear right after the tire rotation. The noise appeared a few days after the rotation. If it were a badly cupped tire that was brought to the front, wouldn't it make that noise from day 1 after the rotation?
I'm guessing there is no real danger here. It is very cold outside. I'll drive the car as-is and rotate the tires when the weather is warmer. Otherwise, if I go to the local Discount Tire, they will make me wait for many hours as they take care of the paying customers first and tire rotation doesn't bring them any new money.


(This post was edited by YourMinky on Dec 22, 2017, 6:49 PM)


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 22, 2017, 6:45 PM

Post #4 of 7 (287 views)
Re: Pulsating grinding noise from under the car Sign In

We're not going to turn this into a 30 post thread again. You either have a bad tire or a bad bearing. If you say you eliminated the bearing, that leaves a tire. If you don't want to move the tires to find out, we are just spinning our wheels here.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



YourMinky
User

Dec 23, 2017, 10:08 AM

Post #5 of 7 (272 views)
post icon Re: Pulsating grinding noise from under the car Sign In

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(This post was edited by Hammer Time on Dec 23, 2017, 11:05 AM)


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Dec 23, 2017, 10:39 AM

Post #6 of 7 (269 views)
Re: Pulsating grinding noise from under the car Sign In

Please CALM down sport!
This noise, grinding whatever you hear is load aggravated apparently. Tires are because you only think bearing is out of the question there's the other side and the new one could be crap right away.


True the cold doesn't help with car bull working in it nor testing. Tires you may feel or see the flaws. If not "directional" tires meant only to turn one way cross rotate them if tires the issue gets better or lots worse IMO and experience.


Just how did the bearing job go and who did it? When out it's clear in your hand it's BAD if not could very well be the other as noises travel and do fool you which side is doing what.


Please - calm down. All here are volunteers to help you if we can if not good enough just send the whole problem out and a horrible weekend to get anything done,


T



Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 23, 2017, 11:03 AM

Post #7 of 7 (263 views)
Re: Pulsating grinding noise from under the car Sign In

I've had enough of this fool. He's gone



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.







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