Loud high pitch humming at 65 to 67 mph. - Page 4

kyongyun · 09-21-2005, 09:16 PM

I know the service bulletin was for the wrx but it still shouldn't really matter. I really don't trust my local dealer. Doesn't matter I'll just get a loud exhaust. From what I read the diff noise seems normal. From my own experience with my friends who have aftermarket gears, they get diff noise.

This what one guy said on nasioc about the damper

"As far as the damper is concerned, there shouldn't be any problem with that as the fix, if they are using something like I am thinking of. A damper is basically a block of metal and rubber that bolts onto the axle. It is designed to cancel out a certain frequency. Many axles come from the factory with dampers. It isn't used to cover up a problem or anything, it basically eliminates the noise associated with a characteric of the axle. Sometimes axles from their design just have a noise associated with them. Dampers from the factory will be put on to eliminate a noise common to the axles"

asf · 05-03-2006, 10:45 PM

Quote:

Originally Posted by G-REX

I have it too but mines around 95-100 mph. Can't really take it to the dealer and tell them it yells at 100.

I have the noise at the top of 5th and it is coming from the front but a lower pitched drone.

FleaDog · 08-07-2006, 05:55 PM

I am glad I found this thread. I installed the SPT catback this weekend, and since then, I am getting this 'whine' at 60-65 mph. Occurs throttle on/off, lightly brake on/off (dissapears outside of this range secondary to decreased speed from brake). Also, the normal drivetrain noises seem louder, liek the ones you get when you are coasting in 1st gear coming to a stop...

I am not sure how changing the exhaust is causing this ??? I double checked it, and it not rubbing anything, or moving around/vibrating at all.

skubeedo · 08-08-2006, 09:09 AM

Quote:

Originally Posted by stiperformance

14k and I have the same noise at 65mph since day one. Does not sound mechanically threatening and did not get any worse. Sounds like a transmission whine to me.

It's what happens when you have as many gears as we do meshing inside the gear box...Turn up the radio.

suby OCD · 07-10-2007, 05:01 PM

I have the slight hum/whine cruising on the freeway myself. I was also told its from the way the gears are cut.

H4N · 07-10-2007, 06:16 PM

Ya i got the same noise at 65-70 mph and partial throttle, started at about 23k and now i'm at 25k miles and seem to be a bit louder? Has it been comfirmed that this is normal?

V8Huntr · 07-11-2007, 10:30 AM

Yea I have the same issue. I noticed it the day I bought the car. That TSB is only for the WRX and the STi apparently has a different rear diff. I only get it under partial throttle as well around 70MPH. I believe it's the gears themselves humming. I put on my Group-N trans mount and the noise got even louder. I think it's just another one of those noises that we're just going to have to deal with.

A thought tho, I have an 04 which has different LSDs (SureTrac) than the other years. I thought this might be part of what is causing the humming. What year are your cars??

Lamini · 07-12-2007, 07:16 PM

isnt this called "axle whine"? couldve sworn it had a name

**WC LATHE WERKS** · 07-18-2007, 12:21 PM

My WRX has this whine noise around 62-67mph because I have the TiC rear diff bushings. They pronounced the noise more when it was almost silent stock.

pimpsti · 08-01-2007, 09:09 PM

49k and i just noticed mine started doin it as well.... so did everyone agree this is nomral?

RoadRash · 11-09-2007, 02:07 PM

I have the same whining noise and it's driving me nuts. I have an '06 with 10k miles on it. The whine peaks at 65mph while applying a constant throttle, just enough to maintain speed. I can't tell if it's coming from the tranny or rear diff. Has anyone with the same problem been able to get it resolved?

RoadRash · 11-14-2007, 07:26 AM

I'm still wondering how many cases there are of this noise. Like someone else posted earlier, the noise is similar to the high pitch tone of a tuning fork. I had a car load of people today in both the front and the back seats and determined it is only audible in certain locations. In the front seats, it is only audible in the normal driving position and if you lean your head over to the door. If you lean toward the center in the front, you can't hear it anymore. For the left and right side back seat, it is not audible in the normal seating position, but lean toward the center and you do here it. In general, there is no specific direction the noise is coming from.

I did take it to the dealership today and demonstrated the problem to the service manager and a technician. The noise can only be heard from 65 to 66 mph. They did hear it but have no idea what the problem is. I only have 11k miles on it, and they suggested to wait a little while when it is worse easier to diagnose.

Has anyone had this noise and had it fixed? Any input or thoughts would be helpful. The noise is driving me nuts on longer drives and occurs at the speed I most typically drive. It can even be heard over the radio, exhaust and tire noise.

kessler89 · 03-30-2008, 04:33 PM

my car has right at 17k on it and it's making the 66-7mph whine too, i was kindof worried about it cause i cant just drop by the dealership with all of my mods, glad to see its more of a "normal" thing or should i say common noise

bluedemon_II · 04-08-2008, 01:57 PM

I have the same whining at 65mph with the same conditions as everyone else, 04 sti with 43k miles on it. Still to this day theres no official TSB on this problem for the sti? I mean the pitch its pretty annoying and loud at the highway and i can hear it even with the radio on

suby OCD · 05-03-2008, 10:16 PM

Its normal, the cause is due to the way the gears are cut, already mentioned previously in this thread.

The STi drivetrain is practically indestructible....the only weak link are the axles....and you only break those on EXTREMELY hard launches with SUPER sticky tires. I dont worry about this slight humming noise and I regularly bang gears and abuse the tranny (and I'm 70ft lbs and 50 whp over stock

)

09-21-2005, 09:16 PM	#46
kyongyun Senior STI Driver Car: 04 Silver/Silver STi Posts: 366 Join Date: Feb 2004 Trader Rating: (0)	I know the service bulletin was for the wrx but it still shouldn't really matter. I really don't trust my local dealer. Doesn't matter I'll just get a loud exhaust. From what I read the diff noise seems normal. From my own experience with my friends who have aftermarket gears, they get diff noise. This what one guy said on nasioc about the damper "As far as the damper is concerned, there shouldn't be any problem with that as the fix, if they are using something like I am thinking of. A damper is basically a block of metal and rubber that bolts onto the axle. It is designed to cancel out a certain frequency. Many axles come from the factory with dampers. It isn't used to cover up a problem or anything, it basically eliminates the noise associated with a characteric of the axle. Sometimes axles from their design just have a noise associated with them. Dampers from the factory will be put on to eliminate a noise common to the axles" This ad is not endorsed by this member. Please register or login to hide this ad.

07-10-2007, 05:01 PM	#50
suby OCD Junior STI Driver Car: '04 PSM STi Fav Mod: EQ road tune Location: CA Posts: 120 Join Date: Jul 2007 Trader Rating: (0)	Re: Loud high pitch humming at 65 to 67 mph. I have the slight hum/whine cruising on the freeway myself. I was also told its from the way the gears are cut.

07-10-2007, 06:16 PM	#51
H4N The Next Petter Solberg Car: 05 STi Fav Mod: EWG, T 2'S Location: Mass-hole Posts: 919 Join Date: Mar 2005 Trader Rating: (6)	Re: Loud high pitch humming at 65 to 67 mph. Ya i got the same noise at 65-70 mph and partial throttle, started at about 23k and now i'm at 25k miles and seem to be a bit louder? Has it been comfirmed that this is normal?

07-11-2007, 10:30 AM	#52
V8Huntr Spec C Club Car: 04' WRB STi Fav Mod: TBE Location: Allentown, PA Posts: 1,515 Join Date: Sep 2006 Trader Rating: (0)	Re: Loud high pitch humming at 65 to 67 mph. Yea I have the same issue. I noticed it the day I bought the car. That TSB is only for the WRX and the STi apparently has a different rear diff. I only get it under partial throttle as well around 70MPH. I believe it's the gears themselves humming. I put on my Group-N trans mount and the noise got even louder. I think it's just another one of those noises that we're just going to have to deal with. A thought tho, I have an 04 which has different LSDs (SureTrac) than the other years. I thought this might be part of what is causing the humming. What year are your cars??

07-12-2007, 07:16 PM	#53
Lamini Junior STI Driver Car: 2007 STI Fav Mod: TurboXS TBE RFL Location: Maryland Posts: 73 Join Date: Mar 2007 Trader Rating: (0)	Re: Loud high pitch humming at 65 to 67 mph. isnt this called "axle whine"? couldve sworn it had a name

08-07-2006, 05:55 PM	#48
FleaDog Grassroots STI Racer Car: 06 CGM/silver STI Fav Mod: DIY modding Location: Philadelphia Posts: 576 Join Date: Oct 2005 Trader Rating: (4)	I am glad I found this thread. I installed the SPT catback this weekend, and since then, I am getting this 'whine' at 60-65 mph. Occurs throttle on/off, lightly brake on/off (dissapears outside of this range secondary to decreased speed from brake). Also, the normal drivetrain noises seem louder, liek the ones you get when you are coasting in 1st gear coming to a stop... I am not sure how changing the exhaust is causing this ??? I double checked it, and it not rubbing anything, or moving around/vibrating at all.

07-18-2007, 12:21 PM	#54
WC LATHE WERKS Authorized Vendor Car: 04WRX /STi Swap Fav Mod: TiC AST Coilovers!!! Location: Tri-State, USA Posts: 1,239 Join Date: Nov 2005 Trader Rating: (86)	Re: Loud high pitch humming at 65 to 67 mph. My WRX has this whine noise around 62-67mph because I have the TiC rear diff bushings. They pronounced the noise more when it was almost silent stock.

08-01-2007, 09:09 PM	#55
pimpsti Junior STI Driver Car: 05 STi Fav Mod: everything i've done so far Location: earth, cali to be exact.. Posts: 107 Join Date: Dec 2004 Trader Rating: (0)	Re: Loud high pitch humming at 65 to 67 mph. 49k and i just noticed mine started doin it as well.... so did everyone agree this is nomral?

11-09-2007, 02:07 PM	#56
RoadRash Amateur STI Driver Car: Black 06 STI Location: OH Posts: 26 Join Date: Jul 2007 Trader Rating: (1)	Re: Loud high pitch humming at 65 to 67 mph. I have the same whining noise and it's driving me nuts. I have an '06 with 10k miles on it. The whine peaks at 65mph while applying a constant throttle, just enough to maintain speed. I can't tell if it's coming from the tranny or rear diff. Has anyone with the same problem been able to get it resolved?

11-14-2007, 07:26 AM	#57
RoadRash Amateur STI Driver Car: Black 06 STI Location: OH Posts: 26 Join Date: Jul 2007 Trader Rating: (1)	Re: Loud high pitch humming at 65 to 67 mph. I'm still wondering how many cases there are of this noise. Like someone else posted earlier, the noise is similar to the high pitch tone of a tuning fork. I had a car load of people today in both the front and the back seats and determined it is only audible in certain locations. In the front seats, it is only audible in the normal driving position and if you lean your head over to the door. If you lean toward the center in the front, you can't hear it anymore. For the left and right side back seat, it is not audible in the normal seating position, but lean toward the center and you do here it. In general, there is no specific direction the noise is coming from. I did take it to the dealership today and demonstrated the problem to the service manager and a technician. The noise can only be heard from 65 to 66 mph. They did hear it but have no idea what the problem is. I only have 11k miles on it, and they suggested to wait a little while when it is worse easier to diagnose. Has anyone had this noise and had it fixed? Any input or thoughts would be helpful. The noise is driving me nuts on longer drives and occurs at the speed I most typically drive. It can even be heard over the radio, exhaust and tire noise.

03-30-2008, 04:33 PM	#58
kessler89 Spec C Club Car: 06 STi/00 L Fav Mod: trunk monkey Location: Ohio Posts: 1,303 Join Date: May 2006 Trader Rating: (6)	Re: Loud high pitch humming at 65 to 67 mph. my car has right at 17k on it and it's making the 66-7mph whine too, i was kindof worried about it cause i cant just drop by the dealership with all of my mods, glad to see its more of a "normal" thing or should i say common noise

04-08-2008, 01:57 PM	#59
bluedemon_II STI Driver Car: 04 Sti Wrb on Silver Location: Hatillo, Puerto Rico Posts: 287 Join Date: Jul 2007 Trader Rating: (0)	Re: Loud high pitch humming at 65 to 67 mph. I have the same whining at 65mph with the same conditions as everyone else, 04 sti with 43k miles on it. Still to this day theres no official TSB on this problem for the sti? I mean the pitch its pretty annoying and loud at the highway and i can hear it even with the radio on

05-03-2008, 10:16 PM	#60
suby OCD Junior STI Driver Car: '04 PSM STi Fav Mod: EQ road tune Location: CA Posts: 120 Join Date: Jul 2007 Trader Rating: (0)	Re: Loud high pitch humming at 65 to 67 mph. Its normal, the cause is due to the way the gears are cut, already mentioned previously in this thread. The STi drivetrain is practically indestructible....the only weak link are the axles....and you only break those on EXTREMELY hard launches with SUPER sticky tires. I dont worry about this slight humming noise and I regularly bang gears and abuse the tranny (and I'm 70ft lbs and 50 whp over stock ) This ad is not endorsed by this member. Please register or login to hide this ad.