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when my MDX reaches around 50mph it switches into 5'th gear and the engine switches into a lower frequency tone, I can hear the low frequency tone only when I accelerate. And if I put the gear in D4(so that it won't go into the 5'th gear) then I won't be able to hear the low frequency tone. Personally, I believe this should not be a problem, but just want to get some comments. Thanks.
 

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Low frequency tone

Hey Arctic,
Mine does the same thing. I think it's just that the engine is so overgeared that it is just bogging down a bit.

Cheers
 

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I get the same thing

Arctic,
When your in D4 does it affect anything else. Can one just ride in D4 as standard or it wouldnt be wise to do that? I found myself with the low tone at times and to me it just feels as if the car is bogging down and running out of power. Although it might not be anything wrong it bugs me enught o have to accelerate each time just to change gears and not hear it.
 

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Hi, MDXplosion,

The low tone bugs me as well. My solution is that if I'm in area that I won't exceed 55mph, I'll just put in D4, and would only switch into D5 if I'm going to go over 60mph.
I'm just hoping this low frequency tone is not something wrong with the drive shaft out of balance. There was a thread talking about "Drive shaft". flyguy reported some "low frequency noise" presenting between 55mph-65mph.
But if we can avoid the low tone by not going into D5, may be it's not a problem with drive shaft. What do you think?
 
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Arctic:

I have 6500 miles on my MDX with NO TRANSMISSION NOISE in any gear. Sometimes it's hard to tell when the transmission shifts into higher gears (3rd, 4th and 5th). The MDX has the smoothest automatic transmission of any automobile I have ever owned. I have never noticed any "Transmission" noise at all. I think that if you constantly use 4th gear and don't let the transmission shift into 5th gear your mileage will suffer. To sum up, I don't think a "low frequency noise" in 5th gear is the norm for the MDX. At least it's not normal in mine. Could you be hearing tire noise? Sometimes at certain speeds and on different roads tires resonate at different frequencies causing noise and vibration. Just a thought and may not be true in your case.
 

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Like Johnnyreb says below- I never had any tranny noise.

johnnyreb said:
Arctic:

I have 6500 miles on my MDX with NO TRANSMISSION NOISE in any gear. Sometimes it's hard to tell when the transmission shifts into higher gears (3rd, 4th and 5th). The MDX has the smoothest automatic transmission of any automobile I have ever owned. I have never noticed any "Transmission" noise at all. I think that if you constantly use 4th gear and don't let the transmission shift into 5th gear your mileage will suffer. To sum up, I don't think a "low frequency noise" in 5th gear is the norm for the MDX. At least it's not normal in mine. Could you be hearing tire noise? Sometimes at certain speeds and on different roads tires resonate at different frequencies causing noise and vibration. Just a thought and may not be true in your case.
 

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I have the same noise, but between 60 & 70 MPH if the car has a slight strain on it, like when going up a hill. I was told by the dealer "it is normal for MDX" and that it is the exhaust system resonating, which is what I thought it was. If the tranny downshifts it goes away.

It might "be normal" but it should not happen. I'm sure repositioning the muffler or using a different muffler would cure the problem.

Other then excessive wind noise that seems to come from the windshield area and the exhaust "resonating" the car is pretty quiet. Too bad they can't "fix" these problems.
 

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But if we can avoid the low tone by not going into D5, may be it's not a problem with drive shaft. What do you think?

Arctic that sunds like a bypass instead of a solution. I am due for service this month and I will ask the service manager about this and get back to you. Although I dont expect them to tell me anything different than what they told Steve. We will soon see.

The exhaust system resonating during the process doesnt nearly bug me as much as it hapenning period. IT shouldnt happen but it does on my X :(

John/Texrb: For me it isnt a tranny noise at all....I dont hear anything coming from the tranny it is just when in D5 it just shifts down to a lower gear (between 55-65mph) making it seem like it is dragging or slow rolling. It is weird I cant quite explain it thoroughly, however the power is still there and the pick-up/acceleration seems fine, its just at times that it shifts into a lower gear and one picks up on it trying to resonate :confused:
 

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I don't hear anything. Maybe that noise is from the non-touring tires. Anybody with a touring have this problem?
 

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Yes, sounds (pun) like the same issue. Downshift, or go into neutral and the sound goes away.

I am also getting an unrelated vibration at > 69 MPH which remains no matter what gear. After a second session on a Hunter balancer, issue is unresolved.

While these are annoying (and presumably correctable) -- it is in otherwise a great vehicle.
 

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Has anyone taken it to the dealer to get the noise checked out? Cause I get the drone at around 70-75 mph in 5th gear as well. It is actually quite irritating. I'm going to get it checked out when I bring the X in for it's first service, but it's still some times away.

You'd figure that by the 3rd year these things would have been looked after.


:3:

2003 SS MDX - cdn model - res,back up sensor,cargo net,Husky all weather floor mats and cargo tray
 
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