Warning for Those Who Dropped Things in the ECU Box!

MMAJNKE · 09-21-2008, 09:58 PM

dyson ftw!

timtech · 02-17-2009, 05:49 AM

Quote:

Originally Posted by Mr. 5

My ecu box fan has been making sounds so I ordered a new one.
For those who don't know about the ECU fan, it's #5 in the pic:

Sorry to revive such an old thread.

Is there anyway installing a pnp harness that tucking the wires in the firewall direction that they could be in the fan? I don't hear any noise, but just want to make sure.

Mr. 5 · 02-17-2009, 12:26 PM

Quote:

Originally Posted by timtech

Sorry to revive such an old thread.

Is there anyway installing a pnp harness that tucking the wires in the firewall direction that they could be in the fan? I don't hear any noise, but just want to make sure.

No, I don't think there will be an issue with wires being stuffed in there.
It's only if you drop anything small and loose.
The fan could eventually suck it up and get clogged or damaged.

Italia335i · 04-04-2009, 09:02 AM

What is the part # for this fan?

Alex@AKMotorwerk · 04-04-2009, 09:05 AM

Quote:

Originally Posted by Italia335i

What is the part # for this fan?

12907547141

about $116. from Tischer

Italia335i · 04-04-2009, 09:08 AM

Found it:

12907531783

bulldog_yyc · 04-04-2009, 12:01 PM

fan looks like a mini turbo lol

De90man · 04-04-2009, 02:27 PM

Nice vacuum

**335i** · 04-04-2009, 04:10 PM

thanks for good info

Xander · 04-23-2009, 08:20 PM

I think I have this noise as well, I am going to unplug it first to make sure.

I'm wondering if you can take the ECU box out and just fish the tape out through the hole that is left in the firewall. Thoughts?

X...

Xander · 04-24-2009, 06:55 AM

Unplugged it this morning and it's not it. I guess mine is actually in the HVAC fan

X...

MSPORTWORLD · 04-24-2009, 09:47 AM

That is some good to know information. Learn something new every day.

PaulBailey@ltbmw · 04-24-2009, 04:39 PM

Good Write up!

vAnt826 · 04-24-2009, 06:40 PM

I never knew there was a fan down there.

Bendy22 · 10-22-2017, 08:56 PM

Just as another datapoint, mine was making a noise like a bad CPU computer fan every time I started the car after a long period of time. Just like computer fans, this fan kicks up full speed to start as the monitoring of the temperature isn't working the first seconds of system startup, therefore the fan speed kicks on to full just in case. After a few seconds, it spins down and possibly turns all the way off, but low enough to where you can't hear it. I've also been able to hear it on very hot days, 80 degrees+, when it is actually trying to help cool the ECU box under the hood.

I finally decided to dig in under the dash and find the little bugger and, though I found no debris inside it, I did find that it was completely unattached to where it is supposed to be, just hanging free back there from its wires. I could not get it to make the noise on starting the car, so I just snapped it back in place to the other half of its housing on the firewall (bit of a PITA behind the big wiring bundle, but somehow got it done after mostly freeing the fuse box). We will see how it sounds over the next few days. If I have to end up replacing it, at least I'm now familiar on how to get it in and out.

09-21-2008, 09:58 PM	#23
MMAJNKE MMA Changed My Life! 317 Rep 6,629 Posts Drives: e92 m3 & f30 328i Join Date: Oct 2007 Location: so cal iTrader: (48) Garage List "2006 sport bi ... [0.00] 2008 e92 coupe [0.00]	dyson ftw!
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04-04-2009, 09:02 AM	#26
Italia335i Banned 2 Rep 88 Posts Drives: BMW Join Date: Mar 2009 Location: USA iTrader: (1)	What is the part # for this fan?
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04-04-2009, 09:08 AM	#28
Italia335i Banned 2 Rep 88 Posts Drives: BMW Join Date: Mar 2009 Location: USA iTrader: (1)	Found it: 12907531783
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04-04-2009, 12:01 PM	#29
bulldog_yyc Major General 130 Rep 5,040 Posts Drives: GT3RS Join Date: Oct 2008 Location: probably work iTrader: (28)	fan looks like a mini turbo lol
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04-04-2009, 02:27 PM	#30
De90man First Lieutenant 8 Rep 350 Posts Drives: F30 335i Sedan Join Date: Feb 2007 Location: Los Angeles iTrader: (1)	Nice vacuum
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04-04-2009, 04:10 PM	#31
335i Colonel 184 Rep 2,320 Posts Drives: TOYOTA & 2008 E92 335i 6MT Join Date: Jul 2007 Location: Swiss iTrader: (4) Garage List 2008 335i [9.00]	thanks for good info __________________ E92 335i Black Saphire 6MT PROcede V5, BMS DCI, Big Tom IC, AR CL-DP's 3", AR Design OC, Forge DV's, OEM M3 side skirts, BMW Performance Wheels 19 inch 269 Black Gloss+Continental ContiSportContact 5P (400hp and 550nm) https://www.youtube.com/user/aistis7..._as=subscriber
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04-23-2009, 08:20 PM	#32
Xander I'm new 8 Rep 255 Posts Drives: 997 Turbo, F80 M3, CC & Yukon Join Date: Jan 2009 Location: Buffalo, NY iTrader: (4)	I think I have this noise as well, I am going to unplug it first to make sure. I'm wondering if you can take the ECU box out and just fish the tape out through the hole that is left in the firewall. Thoughts? X...
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04-24-2009, 06:55 AM	#33
Xander I'm new 8 Rep 255 Posts Drives: 997 Turbo, F80 M3, CC & Yukon Join Date: Jan 2009 Location: Buffalo, NY iTrader: (4)	Unplugged it this morning and it's not it. I guess mine is actually in the HVAC fan X...
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04-24-2009, 09:47 AM	#34
MSPORTWORLD Major 232 Rep 1,481 Posts Drives: '11 M3 MW/FR - '12 M3 FO/SC Join Date: Dec 2008 Location: California iTrader: (6) Garage List 2004 Honda Hornet [0.00] 2003 Chevrolet 2500 ... [0.00] 2011 BMW S1000RR [0.00] 2011 BMW E92 M3 [0.00] 2012 BMW E92 M3 [0.00]	That is some good to know information. Learn something new every day. __________________ IG: @msportworld MSPORTWORLD YouTube Channel 2012 M3 ED Thread 2011 M3 ED Thread
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04-24-2009, 04:39 PM	#35
PaulBailey@ltbmw General 663 Rep 26,878 Posts Drives: 2-325 330 2-335 2-Z4 2-135 X5d Join Date: Mar 2007 Location: Huntington Beach, CA iTrader: (34) Garage List 2008 BMW 335i E90 [7.00] 2011 BMW 335i E92 [7.96]	Good Write up!
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04-24-2009, 06:40 PM	#36
vAnt826 Major 63 Rep 1,417 Posts Drives: E92 M3 Join Date: Nov 2006 Location: Seattle iTrader: (3)	I never knew there was a fan down there.
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10-22-2017, 08:56 PM	#37
Bendy22 New Member 0 Rep 8 Posts Drives: 2006 BMW 330i 6MT Sport Pkg Join Date: Feb 2017 Location: Lafayette, IN iTrader: (0)	Just as another datapoint, mine was making a noise like a bad CPU computer fan every time I started the car after a long period of time. Just like computer fans, this fan kicks up full speed to start as the monitoring of the temperature isn't working the first seconds of system startup, therefore the fan speed kicks on to full just in case. After a few seconds, it spins down and possibly turns all the way off, but low enough to where you can't hear it. I've also been able to hear it on very hot days, 80 degrees+, when it is actually trying to help cool the ECU box under the hood. I finally decided to dig in under the dash and find the little bugger and, though I found no debris inside it, I did find that it was completely unattached to where it is supposed to be, just hanging free back there from its wires. I could not get it to make the noise on starting the car, so I just snapped it back in place to the other half of its housing on the firewall (bit of a PITA behind the big wiring bundle, but somehow got it done after mostly freeing the fuse box). We will see how it sounds over the next few days. If I have to end up replacing it, at least I'm now familiar on how to get it in and out.
	Appreciate 0 Quote