Need help figuring out where this noise is coming from.

TaintedStang · December 18th, 2010, 06:10 PM

My car has been making this annoying buzzing sound for the past couple weeks and I can't figure out whats causing the sound. I usually only hear the noise when the motor is at normal operating temperature and when backing off the throttle too slow for a stop. It doesn't increase with the RPM's and seems too be coming from the top of the motor. The car still runs fine and hasn't been problematic starting or running poorly. Can someone help me out? I attached a video of the car making the noise. Thanks!

Dale :: MOV00373.mp4 video by Dale06_photo - Photobucket

TaintedStang · December 18th, 2010, 07:44 PM

Bumpity bump bump. Anyone? Or am I the lone ranger here too have ever had this noise?

hooliganryder · December 18th, 2010, 08:21 PM

make sure ur cup holder dont have any loose change in it...happens to me all the time...

TaintedStang · December 18th, 2010, 08:39 PM

Originally Posted by hooliganryder

make sure ur cup holder dont have any loose change in it...happens to me all the time...

Click the linky in the thread. The noise is coming from under the hood.

Kohrs93 · December 18th, 2010, 08:47 PM

Really hard to hear the noise man :/ can you try to describe it better? Maybe where its coming from? up/down with rpms? etc

TaintedStang · December 18th, 2010, 08:52 PM

Originally Posted by Kohrs93

Really hard to hear the noise man :/ can you try to describe it better? Maybe where its coming from? up/down with rpms? etc

I have this stated in the OP. You can hear the buzzing noise when I rev thd motor a little and the rpms begin too drop back to idle.

Xx1nuYashaxX · December 18th, 2010, 09:55 PM

The kinda high pitch buzzing sound, or the grinding/scraping sound it makes a few times while revving? I'd like to know too, cause I think my car has done it quite a few times. None recently though.

TaintedStang · December 18th, 2010, 10:31 PM

Originally Posted by Xx1nuYashaxX

The kinda high pitch buzzing sound, or the grinding/scraping sound it makes a few times while revving? I'd like to know too, cause I think my car has done it quite a few times. None recently though.

Yea thats the noise. It doesn't seem too be abnything major but its definately annoying. I just can't track it down. Its not coming from the motor, the sound is coming from around the intake manifold and plenum. Ill let you know when I get it figured out.

mrbigjeep · December 18th, 2010, 10:34 PM

i think mine doing it too but only since its been cold and been using heat

TaintedStang · December 18th, 2010, 10:37 PM

Originally Posted by mrbigjeep

i think mine doing it too but only since its been cold and been using heat

Im not sure if its cold weather related but I do know it does this regardless of whether or not the heat and a/c are on.

Xx1nuYashaxX · December 18th, 2010, 10:39 PM

Yup, I noticed mine with all heat/ac etc off before it snowed. Please do let me know when you figure it out, I'll ask around to see if anyone knows too.

mrbigjeep · December 18th, 2010, 10:43 PM

may not have anything to do with it. just know that it hasn't been like that for long

TaintedStang · December 19th, 2010, 02:25 PM

boobs.

86er · December 19th, 2010, 03:06 PM

you talkin at the :36 and :40ish mark's? Ive heard a few cars make that noise and they never had a problem, always figured it was a harmonics transfer through something, that one weird/odd moment and it made something around it vibrate

1_nice_03_gt · December 19th, 2010, 03:10 PM

u can hear it clearly at :21-:22 seconds, does it idle ok?

TaintedStang · December 19th, 2010, 03:22 PM

The car idles fine. I haven't noticed any problems other than that noise.

gdl · December 19th, 2010, 07:15 PM

It's hard to say for sure, but if it's the sound I think I'm hearing, I had something similar once that turned out to be the waterpump. Maybe take your belt off and try spinning that and all the other pullies by hand and see if any of them have play or feel rough.

TaintedStang · December 19th, 2010, 07:40 PM

I'll check that out also. Thanks! The noise seems too be coming from around the IAC and TPS though. I cleaned the IAC valve although it wasn't very dirty.

TaintedStang · December 23rd, 2010, 11:34 PM

Just wanted too update this to let everyone know I found the problem. It ended up being my IAC valve. The problem finally started showing symptoms of a hanging idle. My car got to where it didn't wanna idle lower than 1,500rpms. Replaced the IAC and everythings great now.

December 18th, 2010, 06:10 PM	#1
TaintedStang MM's Taint Shaver! 2003 Mustang GT Join Date: Dec 2009 Location: Oregon Posts: 6,527 iTrader: 5 reviews	Need help figuring out where this noise is coming from. My car has been making this annoying buzzing sound for the past couple weeks and I can't figure out whats causing the sound. I usually only hear the noise when the motor is at normal operating temperature and when backing off the throttle too slow for a stop. It doesn't increase with the RPM's and seems too be coming from the top of the motor. The car still runs fine and hasn't been problematic starting or running poorly. Can someone help me out? I attached a video of the car making the noise. Thanks! Dale :: MOV00373.mp4 video by Dale06_photo - Photobucket __________________ Last edited by TaintedStang; December 18th, 2010 at 07:45 PM.

December 18th, 2010, 07:44 PM	#2
TaintedStang MM's Taint Shaver! 2003 Mustang GT Join Date: Dec 2009 Location: Oregon Posts: 6,527 iTrader: 5 reviews	Bumpity bump bump. Anyone? Or am I the lone ranger here too have ever had this noise? __________________

December 18th, 2010, 08:21 PM	#3
hooliganryder Regular 00 mustang gt Join Date: Jul 2010 Location: mcewen tn Posts: 393 iTrader: 0 reviews	make sure ur cup holder dont have any loose change in it...happens to me all the time... __________________ Cms stage 2 cams 04 explorer aluminum engine spec 3 clutch sct x3 k and n cai 410 gears underdrive pulleys roush short throw

December 18th, 2010, 10:34 PM	#9
mrbigjeep I Post Entirely Way Too Much 04 mustang gt 7.21 @ 98 Join Date: Apr 2008 Location: upstate sc Posts: 5,923 iTrader: 1 reviews	i think mine doing it too but only since its been cold and been using heat __________________ cams + 150 shot

December 18th, 2010, 10:43 PM	#12
mrbigjeep I Post Entirely Way Too Much 04 mustang gt 7.21 @ 98 Join Date: Apr 2008 Location: upstate sc Posts: 5,923 iTrader: 1 reviews	may not have anything to do with it. just know that it hasn't been like that for long __________________ cams + 150 shot

December 18th, 2010, 09:55 PM	#7
Xx1nuYashaxX Regular '99 Mustang GT Join Date: Feb 2010 Location: Whitehall, OH Posts: 251 iTrader: 0 reviews	The kinda high pitch buzzing sound, or the grinding/scraping sound it makes a few times while revving? I'd like to know too, cause I think my car has done it quite a few times. None recently though.

December 18th, 2010, 10:39 PM	#11
Xx1nuYashaxX Regular '99 Mustang GT Join Date: Feb 2010 Location: Whitehall, OH Posts: 251 iTrader: 0 reviews	Yup, I noticed mine with all heat/ac etc off before it snowed. Please do let me know when you figure it out, I'll ask around to see if anyone knows too.

December 19th, 2010, 02:25 PM	#13
TaintedStang MM's Taint Shaver! 2003 Mustang GT Join Date: Dec 2009 Location: Oregon Posts: 6,527 iTrader: 5 reviews	boobs. __________________

December 19th, 2010, 03:06 PM	#14
86er I Post Entirely Way Too Much Join Date: Nov 2006 Location: Memphis, TN Posts: 7,626 iTrader: 0 reviews	you talkin at the :36 and :40ish mark's? Ive heard a few cars make that noise and they never had a problem, always figured it was a harmonics transfer through something, that one weird/odd moment and it made something around it vibrate __________________ Just a truck 5.4 3v: 264hp 317ft lbs rock stock The "search" button, its not just for porn piecing together the next project faster than your first sexual experience

December 19th, 2010, 03:10 PM	#15
1_nice_03_gt Hardcore Enthusiast 2003 ford mustang gt 13.9 stock Join Date: Sep 2010 Location: bay area Posts: 1,473 iTrader: 1 reviews	u can hear it clearly at :21-:22 seconds, does it idle ok? __________________ k&n cai, mangaflows exhaust, summit udp's, 24lb injectors, 78mm bbk plenun, tri-ax s/s, a/c delete,3.73's, aluminum drive shaft, upr upper/lower control arms, solid motor mounts, bbk heades, upr xpipe,bbk cc plates, camber bolts.bama tune

December 19th, 2010, 03:22 PM	#16
TaintedStang MM's Taint Shaver! 2003 Mustang GT Join Date: Dec 2009 Location: Oregon Posts: 6,527 iTrader: 5 reviews	The car idles fine. I haven't noticed any problems other than that noise. __________________

December 19th, 2010, 07:15 PM	#17
gdl Regular 99 Cobra, 03 Mach1, 07 CS Join Date: Oct 2008 Location: Grapevine, TX Posts: 373 iTrader: 0 reviews	It's hard to say for sure, but if it's the sound I think I'm hearing, I had something similar once that turned out to be the waterpump. Maybe take your belt off and try spinning that and all the other pullies by hand and see if any of them have play or feel rough. __________________ 2007 Redfire California Special http://i183.photobucket.com/albums/x...n/2007GTCS.jpg 2003 Dark Shadow Grey Mach 1 http://i183.photobucket.com/albums/x...born/Mach1.jpg 1999 Black Cobra Vert

December 19th, 2010, 07:40 PM	#18
TaintedStang MM's Taint Shaver! 2003 Mustang GT Join Date: Dec 2009 Location: Oregon Posts: 6,527 iTrader: 5 reviews	I'll check that out also. Thanks! The noise seems too be coming from around the IAC and TPS though. I cleaned the IAC valve although it wasn't very dirty. __________________

December 23rd, 2010, 11:34 PM	#19
TaintedStang MM's Taint Shaver! 2003 Mustang GT Join Date: Dec 2009 Location: Oregon Posts: 6,527 iTrader: 5 reviews	Just wanted too update this to let everyone know I found the problem. It ended up being my IAC valve. The problem finally started showing symptoms of a hanging idle. My car got to where it didn't wanna idle lower than 1,500rpms. Replaced the IAC and everythings great now. __________________

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