A new noise!! Rumbly exhaust kinda sound... - Nissan Forum
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post #1 of 25 Old Dec 15th, 2016, 05:34 PM Thread Starter
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A new noise!! Rumbly exhaust kinda sound...

So my little bus has been making a noise that we think is coming from the front half, underneath. It is not noticeable at slow speeds, only 70 km and up. We thought it may be a leak in the exhaust system but our mechanic looked at it, and could find no leaks. We did not have it road tested that day as it was too cold and I had not booked enough time anyway. He did mention other components in the exhaust system that may be responsible. It is kinda rumbly and even my deaf hubby can hear it, haha! I did have the muffler replaced in July, 2015. Any ideas?

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post #2 of 25 Old Dec 16th, 2016, 03:00 PM
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Hi Molly,
There are a few sections to the exhaust, could be a flange or connection. Cant tell from here. Hopefully nothing too dire.
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post #3 of 25 Old Mar 20th, 2017, 04:44 PM Thread Starter
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Well, the noise seemed to subside a bit but for the last few trips, the noise now sounds like a really loud hum, that gets louder the faster you go. A slightly fluctuating sound. My hubby, who as I mentioned is pretty deaf and wears hearing aids, really noticed it, too, and said I should take it in to the mechanic again...It sounds kinda like an airplane flying overhead, for lack of a better description. When parked, and idling, it sounds normal, and when I rev the engine, it just sounds fine. What could it be?? It is really annoying!! Help!

I plan to get the mechanic to test drive it, with me in it, and maybe he can figger it out! It can't be my tires, as I bought those last summer, and I hardly even noticed the slight increase in road noise. Sigh...
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post #4 of 25 Old Mar 20th, 2017, 05:27 PM
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I had a pontiac sunfire back in 2003 and at the end of the winter it started to do the same thing. I thought maybe it was the winter tires, so i did a couple of burns in a parking lot. Nothing changed and it was like a Boeing 747 on the freeway.
Finally it was the wheel bearing.

Even driving slowly and swirling a bit you should hear it.

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post #5 of 25 Old Mar 20th, 2017, 05:43 PM Thread Starter
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I googled "my car sounds like an airplane", and there are a lot of references to wheel bearings being the cause...anyway, not sure how many pesos that would be, but hope to find out soon!!
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post #6 of 25 Old Mar 20th, 2017, 06:19 PM
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I googled "my car sounds like an airplane", and there are a lot of references to wheel bearings being the cause...anyway, not sure how many pesos that would be, but hope to find out soon!!
Sadly, "rumbly" sounds that only happen when the car is moving and change only with vehicle speed tend to be bearings. Sometimes, you can get a change in sound by turning tightly one way or another. "Tightly" meaning that you get a bit of body roll so that you know you are adding or subtracting weight on one side or the other. The thing about "wheel" type noises is that they reverberate through the drive train, making it really hard to pinpoint them from the drivers seat

A mechanic will put it on a hoist and get the weight off the wheels. They'll grab each tire and give it a good hard wiggle. If there is any play, then it is probably bearings.

It could still be other things like brakes or CV joints, but they tend to "chirp" or click rather than rumble continuously.

I'm guessing from your Alberta location that you have a 2005 or 2006. After 10/11 years and 160+km, bearings aren't an unusual repair.

Last edited by MikeHJ; Mar 20th, 2017 at 06:24 PM.
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post #7 of 25 Old Mar 20th, 2017, 08:01 PM
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I agree with the others, its a wheel bearing. And MikeHJ, Molly has over 340,000 kms on hers, I kind of doubt they were never changed before she bought it. Have had mine for 6 and half years and driven 123,000 kms in that time (182,000 on odometer), and have replaced both rears twice and the front ones once.
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post #8 of 25 Old Mar 20th, 2017, 09:17 PM Thread Starter
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I agree with the others, its a wheel bearing. And MikeHJ, Molly has over 340,000 kms on hers, I kind of doubt they were never changed before she bought it. Have had mine for 6 and half years and driven 123,000 kms in that time (182,000 on odometer), and have replaced both rears twice and the front ones once.
Haha! Now about 358K...yikes! I reviewed the service records I got with this and can find no reference to wheel bearings at all! Now, there are some missing entries, so maybe they were done...I don't have to get them done in pairs, do I?? How much time and how much does this typically cost, assuming this is the issue?
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post #9 of 25 Old Mar 20th, 2017, 10:43 PM
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Wheel bearings are typically 2 hours labor & the part, probably $250-$300 depending on what your mechanic charges per hour. Although I don't know if the book rate is significantly different for X Trails.

You don't have to do them in pairs, but if one side goes then it isn't unusual for the other go soon after. It's not like they're connected where changing one will add undue stress to the other causing it to fail early. It's just they're a part that wears out, so if one side wears out, then the other is probably nearing the end as well. I usually only change the bad one and hope for the best; sometimes I get more than a year, sometimes I only get a month.

Last edited by MikeHJ; Mar 20th, 2017 at 10:47 PM.
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post #10 of 25 Old Mar 21st, 2017, 05:35 AM
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MikeHJ is exactly right. Also, that would be amazing if they have never been replaced before. Which reminds me, what was the outcome of your timing belt noise?
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post #11 of 25 Old Mar 21st, 2017, 08:45 AM Thread Starter
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MikeHJ is exactly right. Also, that would be amazing if they have never been replaced before. Which reminds me, what was the outcome of your timing belt noise?
Regarding the timing chain noise, we had agreed to wait for a while as the noise was so slight and so random, he felt it would be OK to wait. It has to stay overnight for the silicone to dry (no gasket!?) and he hoped no more than a couple hours labour, and hopefully no parts... Obviously, this new problem sounds much more important! Hubby doesn't want me to drive it if I don't have to...what would happen? Would my wheel fall off? Stay tuned!

Oh, and thanks for the comments...you guys are usually right!
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post #12 of 25 Old Mar 21st, 2017, 12:26 PM Thread Starter
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Yep...It is a wheel bearing!

So as I was going to the garage, I listened a bit more carefully and felt that the sound was coming more from the right front. And, that is what he found...the right front bearing is going. There was no play in the wheel, but he did some maneuvers that supported the theory, as well as he heard the "bi-plane sound" and said sound like that is usually a definite symptom of that problem. So I left it there and he is ordering a new one at $71.00, and thought no less than a couple hours labour. He thought the others sounded OK so far, but at least I know what to listen for. He told me what can happen if nothing is done, so obviously I don't want to get into a wreck, haha!! Anyway, I'll let you know how it is tomorrow when I pick it up...
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post #13 of 25 Old Mar 21st, 2017, 07:01 PM
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Hi Molly
Its better to not neglect it and have it done sooner rather than later. I doubt yours was at the point your safety was at risk, but there are people who ignore these things. You will enjoy the quiet of the new one.
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post #14 of 25 Old Mar 21st, 2017, 11:33 PM
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hello Molly from Vancouver! what were your options (if any) when you had your muffler changed? My 06 Xtrail muffler is in decent shape, but i asked a few shops here for a ''sport'' muffler option and they pretty much tell me there are none for our trucks. I know a few people have installed Magnaflow muffler ( great muffler..had one on my last honda civic...but too pricey)....did you end up replacing yours with stock ? how much was it?
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post #15 of 25 Old Mar 22nd, 2017, 04:15 PM Thread Starter
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OK! It cost me $262.50, and it is MUCH quieter!!

As to my muffler, I just got a regular one; it cost $222.00 for the part... I don't need any of that fancy stuff on there!
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