Odd Noise

Hawkeye · 10-06-2008, 09:22 PM

I don't notice anything and it is a lot cooler here. Doesn't sound like a temp issue to me personally.

F87LUV · 10-07-2008, 09:22 AM

Quote:

Originally Posted by quickfast

Is it coming from your mouth

why dont you STFU please?

kthxbai

MMMazing07 · 10-07-2008, 09:30 AM

pbdm4k · 10-07-2008, 04:16 PM

Quote:

Originally Posted by ZGirl07

why dont you STFU please?

kthxbai

Ah hahaha!!

Lana, you make me laugh! :P

Did you schedule your car to go to the dealership yet?

F87LUV · 10-07-2008, 06:14 PM

not yet... this morning my tpms was going off and my driver front tire was low... i couldnt find a functioning air pump at the gas stations i stopped at so i ended up just leaving her there and hopping on a bus to work... shes falling apart

BimmerZ408 · 10-07-2008, 06:44 PM

Quote:

Originally Posted by ZGirl07

not yet... this morning my tpms was going off and my driver front tire was low... i couldnt find a functioning air pump at the gas stations i stopped at so i ended up just leaving her there and hopping on a bus to work... shes falling apart

Oh Lana, that really sux! I am sorry to hear of all the issues you are having with your baby lately.

Your tear avatar is appropriate for sure.

Topshelf · 10-22-2008, 07:48 PM

Hey ZGirl, you ever find out what was causing that noise? I think I have the exact same problem. Started a few days ago, just after the temps around here cooled down. It sounds like air is either being sucked into or blown out of something. I've spent a few hours driving back and forth to work trying to figure out where it's coming from. I was searching for an answer when Lisa pointed me to this thread.

Here's what I know about my noise so far...

It only happens when accelerating. As soon as I lift off the throttle, it goes away.
I start to hear it at 2k rpm, and it just gets louder from there.
It only happens under load. Revving the engine in neutral does not create the sound.
It is not speed dependent. It happens at 10mph and 80mph.
It sounds like it's coming from either the firewall area or just outside the drivers window.
I was able to hear it today by brake torquing the engine. Could hear it at 1,800 rpm. Oh, and make sure the parking brake is on if you try this, otherwise the guy behind you at the red light will wonder why you are lighting up the rear tires.

I have no CEL, and everything seems to be running just fine. Although I was playing around today while out at lunch, and the car spun up to redline in 1st while in SD, and instead of shifting into second, it just bounced off the limiter.

Had to just back off and manually shift into second. Didn't sound real healthy.

Anyway, if you have any info on your noise, I'd love to hear it.

Haute Z · 10-22-2008, 09:17 PM

Unfortunately, the car still hasnt been serviced but the noise is just as you described. It cannot be normal. Ill update when I found out myself!

Topshelf · 10-23-2008, 07:57 AM

Agreed! This can not be normal. I know I didn't hear it for the last 4,000 miles, and now it's all I can focus on while driving...well, except when my dashboard rattles get my attention.

I'm going to see if I can get the wife to help me locate the source of this tonight or tomorrow. If anyone finds the answer, please post up.

Topshelf · 10-23-2008, 07:31 PM

Hey Z, just came across this thread that sounds very similar to what we're hearing. A cracked hose seems to be the culprit, but I won't be able to take a look until tomorrow. Ghost Whistle

EMP07 · 03-13-2009, 07:26 PM

I have this as well. It only occurs when the car is in motion i.e. some load on the car.When i part throttle the accelerator you here the whistle, it's like the intake is not hook-up properly to the throttle body.

Or as other i think mentioned there is a rip/tear somewhere.This will be difficult to diagnose because i think there needs to be some load on the car.

It is very annoying.

Found this thread. All roads lead to the areas in the intake elbow boot to the throttle body makes complete sense.

http://www.x5world.com/x5-e53-forum/...-coming-5.html

blender · 03-13-2009, 10:11 PM

+1 sounds intake-related. Loose fitting or airbox leak maybe?

10-06-2008, 09:22 PM	#23
Hawkeye Brigadier General 2070 Rep 4,365 Posts Drives: '07 Z4 Coupe, '21 X3, '16 GMC Join Date: Aug 2007 Location: Iowa iTrader: (0) Garage List 2016 GMC Sierra SLT [10.00] 2008 Yamaha R6 [9.00]	I don't notice anything and it is a lot cooler here. Doesn't sound like a temp issue to me personally. __________________ 2007 Z4 3.0si Coupe • 6 MT • Black Saphire Metallic • PP • SP 2016 GMC Sierra SLT Z71 Premium Plus 4x4 2017 Harley StreetGlide • Denim Black • V&H Tune 2021 BMW x30i • Phytonic Blue Metallic • Fully loaded
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10-07-2008, 09:30 AM	#25
MMMazing07 More than you can afford pal....ferrari 181 Rep 1,471 Posts Drives: Z4M Join Date: Aug 2007 Location: MD iTrader: (0)
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10-07-2008, 06:14 PM	#27
F87LUV Lieutenant General 3689 Rep 15,081 Posts Drives: '16 M2, '23 GT4 Join Date: May 2007 Location: NJ iTrader: (4) Garage List 2023 Porsche GT4 [5.00] 2016 BMW M2 [8.66]	not yet... this morning my tpms was going off and my driver front tire was low... i couldnt find a functioning air pump at the gas stations i stopped at so i ended up just leaving her there and hopping on a bus to work... shes falling apart __________________ IG: Trackinheels
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10-22-2008, 07:48 PM	#29
Topshelf Private First Class 2 Rep 113 Posts Drives: '07 335xi/'08 135i Join Date: Aug 2008 Location: Bucks County, PA iTrader: (2)	Hey ZGirl, you ever find out what was causing that noise? I think I have the exact same problem. Started a few days ago, just after the temps around here cooled down. It sounds like air is either being sucked into or blown out of something. I've spent a few hours driving back and forth to work trying to figure out where it's coming from. I was searching for an answer when Lisa pointed me to this thread. Here's what I know about my noise so far... It only happens when accelerating. As soon as I lift off the throttle, it goes away. I start to hear it at 2k rpm, and it just gets louder from there. It only happens under load. Revving the engine in neutral does not create the sound. It is not speed dependent. It happens at 10mph and 80mph. It sounds like it's coming from either the firewall area or just outside the drivers window. I was able to hear it today by brake torquing the engine. Could hear it at 1,800 rpm. Oh, and make sure the parking brake is on if you try this, otherwise the guy behind you at the red light will wonder why you are lighting up the rear tires. I have no CEL, and everything seems to be running just fine. Although I was playing around today while out at lunch, and the car spun up to redline in 1st while in SD, and instead of shifting into second, it just bounced off the limiter. Had to just back off and manually shift into second. Didn't sound real healthy. Anyway, if you have any info on your noise, I'd love to hear it.
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10-22-2008, 09:17 PM	#30
Haute Z .... 2 Rep 44 Posts Drives: Zed Coupe Join Date: Sep 2008 Location: NYC iTrader: (0)	Unfortunately, the car still hasnt been serviced but the noise is just as you described. It cannot be normal. Ill update when I found out myself!
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10-23-2008, 07:57 AM	#31
Topshelf Private First Class 2 Rep 113 Posts Drives: '07 335xi/'08 135i Join Date: Aug 2008 Location: Bucks County, PA iTrader: (2)	Agreed! This can not be normal. I know I didn't hear it for the last 4,000 miles, and now it's all I can focus on while driving...well, except when my dashboard rattles get my attention. I'm going to see if I can get the wife to help me locate the source of this tonight or tomorrow. If anyone finds the answer, please post up.
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10-23-2008, 07:31 PM	#32
Topshelf Private First Class 2 Rep 113 Posts Drives: '07 335xi/'08 135i Join Date: Aug 2008 Location: Bucks County, PA iTrader: (2)	Hey Z, just came across this thread that sounds very similar to what we're hearing. A cracked hose seems to be the culprit, but I won't be able to take a look until tomorrow. Ghost Whistle
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03-13-2009, 07:26 PM	#33
EMP07 First Lieutenant 37 Rep 398 Posts Drives: Z4M Join Date: Dec 2008 Location: Bay Area iTrader: (6)	Part throttle whistle I have this as well. It only occurs when the car is in motion i.e. some load on the car.When i part throttle the accelerator you here the whistle, it's like the intake is not hook-up properly to the throttle body. Or as other i think mentioned there is a rip/tear somewhere.This will be difficult to diagnose because i think there needs to be some load on the car. It is very annoying. Found this thread. All roads lead to the areas in the intake elbow boot to the throttle body makes complete sense. http://www.x5world.com/x5-e53-forum/...-coming-5.html Last edited by EMP07; 03-13-2009 at 07:42 PM..
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03-13-2009, 10:11 PM	#34
blender Custom User Title 145 Rep 661 Posts Drives: black Join Date: Feb 2009 Location: n iTrader: (0)	+1 sounds intake-related. Loose fitting or airbox leak maybe?
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