grinding noise at 35mph

brittyb22 · #1 04-24-2005, 01:43 PM

I have a 2001 grand am GT 3.4L When I go about 35mph i hear a high pitch grinding noise....Break pads have been changed. Anyone know what this noise is?

Hoags · #2 04-25-2005, 05:54 AM

Are there any other details you can give? IE: Where is the noinse comming from? Is the A/C on/off? Is it happening in certian wheather conditions? and any thing else that you can tell us that may help to pin point the problem.

Ridenour · #3 04-25-2005, 04:42 PM

Yes deffinately more details would be great. Does your car shudder? Do you RPM's change?

brittyb22 · #4 04-25-2005, 05:49 PM

Im not sure. It doesnt have anything to do with the AC. It sounds like it is coming from the breaks but the pads have been changed it might be the barrings

Ridenour · #5 04-25-2005, 08:42 PM

Does it occur when you break? - if so, it's the breaks, obviously.

A bearing sound would be more like a pulsating rumbling, that varied with different speeds.

Hoags · #6 04-25-2005, 09:43 PM

Did it make this grinding noise before the pads were replaced?

brittyb22 · #7 04-26-2005, 04:39 PM

Of course i know its not the breaks...because it doesnt make a noise when i hit the breaks....i may be a woman but im not stupid. lol. Im not sure what it is....it only does it at 35mph.

Ridenour · #8 04-26-2005, 04:58 PM

Quote:

Originally Posted by brittyb22

Of course i know its not the breaks...because it doesnt make a noise when i hit the breaks....i may be a woman but im not stupid. lol. Im not sure what it is....it only does it at 35mph.

Sorry Britty, I guess i didn't really read your post close enough before i responded - I wasn't trying to bash on you or anything. By the way, I had no idea you're a woman.

Britty, it may be related to your rim / tire fit. Even on stock wheel setups, sometimes the rubber rubbing against the rim at certain speeds / frequencies can cause strange noises. It wouldn't be a bad idea to have a tire place take a look at it - they should be able to give you a verdict on what it is if it's tire related for free or very cheap.

brittyb22 · #9 04-26-2005, 05:10 PM

Its ok I was just kidding! thanks for the advice! I have been working on this thing since i got it. I have only had it for like 6 months.

Ridenour · #10 04-26-2005, 05:19 PM

O no problem. Let us know how the tire place goes if you take it there. What else have you had go wrong?

Hoags · #11 04-26-2005, 07:37 PM

Something else to have the tire place look at...Have them take look at the C/V joints and boots. Like Ridenour states sometimes things occur at certian times and then return to a "normal" position when not going that speed.

Another question I just thought of. Does the grinding noise only happen on the same road doing the 35 mph? What I'm getting at is this...As an example when I drive on the interstate going 75 mph, my RPM is about 3200 and that is pretty much the same for that speed all the time. Could the noise be related to the engine RPM?

Knifeblade · #12 04-28-2005, 05:08 AM

did you recently change tires, like a different tread pattern? Sometimes that creates a weird noise at certain speeds.

Sergeia · #13 05-07-2005, 10:17 PM

It's sound like bearing wheel.Lift one side (front)left put on drive acselerate to 35-50 and listen ,then another .Side you hear sound from had bad bearing wheel .

brittyb22 · #14 05-15-2005, 01:14 AM

All I know is that the sound occurs right at 35mph.....not at 30....not at 40...not even at 37....right at 35.....I appreciate all the advice thank you

Hoags · #15 05-15-2005, 04:45 AM

brittyb22,
Is the noise coming from outside the car? I ask because I had a 98 Montana that made a high pitched at 25 to 30 mph,ot turned out to be the speedometer, buy my noise went away after the van got warm.

Just a thought.

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