Inside Air Intake Duct,- antenna? thermometer?

dimabimmer · 03-01-2011, 05:30 PM

Sorry if repost and don't want to sound dumb, but what is this "antenna" or "thermometer" looking like thing inside the air intake duct on drivers side???

Last pic shows passenger side air intake duct,- no antenna...

OC3 · 03-01-2011, 05:34 PM

Quote:

Originally Posted by dimabimmer

Sorry if repost and don't want to sound dumb, but what is this "antenna" or "thermometer" looking like thing inside the air intake duct on drivers side???

Last pic shows passenger side air intake duct,- no antenna...

Not sure, but it almost looks like a pitot tube, that are on aircrafts (measures speed of airflow).

///Matthew · 03-01-2011, 06:06 PM

The outside air temperature sensor is located in the brake duct of my E36 M3, I would imagine the E9X has the same setup.

dimabimmer · 03-01-2011, 06:13 PM

Quote:

Originally Posted by OC3

Not sure, but it almost looks like a pitot tube, that are on aircrafts (measures speed of airflow).

I would like to think it's just that ^^^^^

because it sounds good

but I'm pretty sure it's just a thermometer? but the faster you go, the colder temps it would measure? ...just doesnt make sense for placement of that thing inside air intake, unless it does measure the speed of airflow?

e1000 · 03-01-2011, 06:37 PM

Pretty sure that's the thermometer. Also, keep in mind that moving air doesn't measure at a cooler temperature by thermometers. It does feel cooler to the touch because of the increased evaporation that happens.

OC3 · 03-01-2011, 06:48 PM

+1 on thermometer (pitot tubes have a little open-ended tube facing the oncoming airflow)

BimmerM · 03-01-2011, 07:01 PM

It's a temperature sensor. Cost around 45 bucks if you break it.

When you check the outside temp from inside the car I believe it gets the reading from that sensor.

dimabimmer · 03-01-2011, 07:06 PM

Quote:

Originally Posted by BimmerM

It's a temperature sensor. Cost around 45 bucks if you break it.

When you check the outside temp from inside the car I believe it gets the reading from that sensor.

and we have a winner! ^^^

Mjolnir · 03-01-2011, 10:00 PM

Quote:

Originally Posted by dimabimmer

I would like to think it's just that ^^^^^

because it sounds good

but I'm pretty sure it's just a thermometer? but the faster you go, the colder temps it would measure? ...just doesnt make sense for placement of that thing inside air intake, unless it does measure the speed of airflow?

You know that cold air flowing over a thermometer won't make it read colder than the ambient air temperature, right? It might make your hand feel colder if you drove with your hand out the window, but that is windchill.

NYCMCBM3 · 03-01-2011, 10:06 PM

does anyone know why the triangle with a snow flake pic pops up on the OD screen?

RayC · 03-01-2011, 10:09 PM

Quote:

Originally Posted by NycE93M3

does anyone know why the triangle with a snow flake pic pops up on the OD screen?

Comes up when outside temperature is 3 degrees celsius or 37 degrees fahrenheit.

besiktas · 03-02-2011, 08:45 AM

It is the outside air temperature sensor!

TxFeatFan · 03-02-2011, 08:51 AM

I thought it was a parking guide.

jmflukeiii · 03-02-2011, 08:52 AM

M3 Phone Home

mr_yogi · 03-02-2011, 10:25 AM

Quote:

Originally Posted by BimmerM

It's a temperature sensor. Cost around 45 bucks if you break it.

When you check the outside temp from inside the car I believe it gets the reading from that sensor.

I was waiting for the "Ask me how I know.." line.

BimmerM · 03-02-2011, 10:30 AM

Quote:

Originally Posted by mr_yogi

I was waiting for the "Ask me how I know.." line.

Actually I didn't break mine. My car still under 300 miles. LOL.

However, a friend with a 328 had one damaged. On the 328 if I recall it's on the bottom.

03-01-2011, 05:30 PM	#1
dimabimmer Lieutenant Colonel 148 Rep 1,885 Posts Drives: '11 E92 M3 ZCP 6MT Join Date: Apr 2009 Location: Brooklyn to SoHo NYC iTrader: (0)	Inside Air Intake Duct,- antenna? thermometer? Sorry if repost and don't want to sound dumb, but what is this "antenna" or "thermometer" looking like thing inside the air intake duct on drivers side??? Last pic shows passenger side air intake duct,- no antenna... Attached Images __________________ '11 E92 M3 ZCP SG 6MT Tech Sound USB Heat Cloth Aluminium Sunshade http://www.m3post.com/forums/showthread.php?t=422151
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03-01-2011, 06:06 PM	#3
///Matthew Major 196 Rep 1,231 Posts Drives: 2013 M3, 1999 M3 Join Date: Dec 2010 Location: NJ iTrader: (3)	The outside air temperature sensor is located in the brake duct of my E36 M3, I would imagine the E9X has the same setup. __________________ 2013 Santorini Blue M3 1999 Estoril Blue M3 mfatuation.com
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03-01-2011, 06:37 PM	#5
e1000 that's what SHE said! 75 Rep 1,163 Posts Drives: 2011 E92 M3 ZCP Join Date: Jun 2010 Location: OC iTrader: (1)	Pretty sure that's the thermometer. Also, keep in mind that moving air doesn't measure at a cooler temperature by thermometers. It does feel cooler to the touch because of the increased evaporation that happens. __________________
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03-01-2011, 06:48 PM	#6
OC3 Havin' a blast! 125 Rep 4,847 Posts Drives: 2013 M3 E92 Jerez Blk DCT ZCP Join Date: Nov 2010 Location: SoCal iTrader: (1)	+1 on thermometer (pitot tubes have a little open-ended tube facing the oncoming airflow) __________________ BRP 1:56 \| CVR 2:01 \| ACS 1:53 \| WSIR 1:34
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03-01-2011, 07:01 PM	#7
BimmerM Lieutenant 98 Rep 525 Posts Drives: '21 F95 X5 M C, '11.5 E92 M3 C Join Date: Mar 2008 Location: NYC iTrader: (0) Garage List 2013 BMW X5 M [0.00] 2011 BMW M3 [0.00]	It's a temperature sensor. Cost around 45 bucks if you break it. When you check the outside temp from inside the car I believe it gets the reading from that sensor. __________________ Drives: '11.5 Interlagos Blue E92 M3 Comp, '21 F95 X5 M Comp DIYs: Enable Rear Fog \| Easy Side Gill Replacement \| Front Grill Replacement
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03-01-2011, 10:06 PM	#10
NYCMCBM3 Colonel 167 Rep 2,711 Posts Drives: 2012 MCB E92 M3 Join Date: Apr 2010 Location: South Ozone Park,NY iTrader: (13)	does anyone know why the triangle with a snow flake pic pops up on the OD screen? __________________ 2012 MCB///M3
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03-02-2011, 08:45 AM	#12
besiktas Ultimate Driver for the Ultimate Driving Machine 146 Rep 1,146 Posts Drives: BMW M3 E92 Join Date: Oct 2009 Location: Houston, TX iTrader: (0)	It is the outside air temperature sensor! __________________ BMW M3 E92 - Silverstone II BPM Sport Stage II Tune + Test Pipes, GTS DCT Tune
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03-02-2011, 08:51 AM	#13
TxFeatFan Captain 482 Rep 929 Posts Drives: 2024 M4 Convertible Join Date: Jul 2010 Location: Los Alamos, NM iTrader: (0) Garage List 2024 G83 M4 [10.00] 2017 F80 M3 [10.00]	I thought it was a parking guide. __________________ ————————————————————————————————————— 2024 Tanzanite Blue II M4 Convertible
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03-02-2011, 08:52 AM	#14
jmflukeiii Captain 16 Rep 726 Posts Drives: 2011 Jet Black M3 ZCP Coupe Join Date: Feb 2011 Location: Tampa, FL iTrader: (0)	M3 Phone Home __________________ 2011.5 E92 M3 Jet Black, DCT, Competition, Premium 2, and Convenience Packages, Black Novillo, Enhanced Premium Sound, 15% Tint, Black Kidneys/Reflectors/Gills/Roundels, DINAN Full Exhaust, DINAN Tune. 2006 Range Rover Sport Supercharged Black everything.
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