How loud is your cooling fan???

335Caliber · 09-25-2010, 05:10 PM

Hey guys, I always thought my fan in my engine compartment was a bit loud, but it never bothered me or was very noticeable.

Over the last week though, it has become extremely loud. Usually it would be loud for a few minutes when i start up the car then settle down, but now its constantly LOUD.

Today i parked over at Stonecold to get some ice cream and left the car running outside. When I came out, even from 30 feet away, it sounded as if there was a huge pickup truck or 18 wheeler out there mking that noise.

Usually when my car is on and i stand outside the car, i don't even know its on...thats how it should be. But lately its just as if the fan gets stuck on hyperdrive and stays there. It is always hot here in Vegas and temperature hasn't changed recently.

I got the 2007 335i coupe. I am on Map 7, full bolt ons, pump gas.

Anyone out there get similar issues.

And yes I have researched the topic. There are many other topics out there about loud fans. I found them for 328i's and M5s and M3s but not for 335i.

How would I go about troubleshooting this problem? don't wana take car to dealer with tune and full bolt ons.

TMR · 09-25-2010, 05:44 PM

Ive been having the same issue. Turned out to be a bad coolant temp sensor. I also remember some vender saying something about a faulty ECU causing a fan issue.

335Caliber · 09-26-2010, 02:06 AM

how do you check for a bad sensor?

WOPALX · 09-26-2010, 02:13 AM

My fan has been very loud a few times lately, when it's been loud car seams to run with less boost as well. I checked for codes and found one relating to coolant sensor plausibility, so need tO get it fixed at some stage

TMR · 09-26-2010, 02:37 AM

The sensor is $20 and took me 15 min to replace.

WOPALX · 09-27-2010, 06:01 PM

Quote:

Originally Posted by TMR

The sensor is $20 and took me 15 min to replace.

I searched real OEM and could not find the part number for the sensor, would you happen to know what it is?

TMR · 09-27-2010, 06:11 PM

Part # 13621433076

Temperature sensor water/oil 1 13621433076 $16.27

WOPALX · 09-27-2010, 08:50 PM

Quote:

Originally Posted by TMR

Part # 13621433076

Temperature sensor water/oil 1 13621433076 $16.27

Thanks for that, I was not 100% sure so figured I would ask.

335Caliber · 09-28-2010, 12:38 AM

and where is the sensor located and how would i replace it?

TMR · 09-28-2010, 01:44 AM

Take the engine cover that covers the head off. Then on the front right ( near the oil filter ) you will see the sensor. Unscrew, unplug, rescrew plug in. You are done.

BuLoOoSki · 09-28-2010, 01:54 AM

I remember when I had my car, the fan was always loud when its warm and especially when the AC is on at the same time, so that's why you're hearing it now i think. I checked the car for codes and even took it to the dealer and they said its normal. They even showed me how their barely driven test drive car even had it.

335Caliber · 09-28-2010, 09:54 AM

Quote:

Originally Posted by BuLoOoSki

I remember when I had my car, the fan was always loud when its warm and especially when the AC is on at the same time, so that's why you're hearing it now i think. I checked the car for codes and even took it to the dealer and they said its normal. They even showed me how their barely driven test drive car even had it.

the only problem is, is that i just went through a summer with 115 degree temperatures and it wasnt loud. now its 90s outside and is hella loud

335Caliber · 09-28-2010, 09:56 AM

Quote:

Originally Posted by TMR

Take the engine cover that covers the head off. Then on the front right ( near the oil filter ) you will see the sensor. Unscrew, unplug, rescrew plug in. You are done.

thank you. will connect my BT tool and see if any codes first. then i'll order the part and swap it just for the hell of it to see if it'll make a difference.

you order through tischer.com or bmw?

StatenEye · 09-28-2010, 01:56 PM

Quote:

Originally Posted by 335Caliber

Today i parked over at Stonecold to get some ice cream and left the car running outside. When I came out, even from 30 feet away, it sounded as if there was a huge pickup truck or 18 wheeler out there mking that noise.

lol Coldstone? Had this problem with my 535i dealer fixed it, bad temp sensor.

Terrance28 · 09-28-2010, 03:37 PM

subscribed.

335Caliber · 09-28-2010, 07:46 PM

Quote:

Originally Posted by medeiro

lol Coldstone? Had this problem with my 535i dealer fixed it, bad temp sensor.

Cold Stone Creamery is the best ice cream and cakes you can ever get. love it lol

335Caliber · 09-28-2010, 07:56 PM

ok just bought the part from this website:

http://www.bmwpartscounter.com/produ...621433076.html

paid total 29.50 with shipping. will wait and see. I don't even know if this is the problem but will replace it anyway and find out.

TMR · 09-28-2010, 08:47 PM

I went to the dealer and got it for $15

SiR · 09-28-2010, 10:54 PM

Quote:

Originally Posted by 335Caliber

ok just bought the part from this website:

http://www.bmwpartscounter.com/produ...621433076.html

paid total 29.50 with shipping. will wait and see. I don't even know if this is the problem but will replace it anyway and find out.

Just curious, did your car throw a code using your BT?

335Caliber · 09-28-2010, 11:08 PM

haven't checked yet. i guess i should have first, but i just know my fan doesn't sound right. I've had this car long enough to know every inch of it and every sound it makes.

will let you know

M3 Eater · 09-29-2010, 11:14 AM

I have a winding sound when AC on only. I thought it was the fan and maybe it is but only when the AC is on. If I hold 4K rpms in 2nd or 3rd or 4th gear, I hear this yeow, yeow, yeow, yeow...Like my school bus sounded so many years ago...

Dealer said they didn't hear anything and that I need to schedual to take a tech on a ride.

bigdaddycane · 09-29-2010, 12:51 PM

Mine is starting to do it as well....going in for warranty work next week and will have it checked.

335caliber, were you able to check for codes with your BT cable? Anything?

Quote:

Cold Stone Creamery is the best ice cream and cakes you can ever get.

true, but their ice cream and smoothies give me nasty "ice cream headaches"...sh*t is stoopid cold....

09-25-2010, 05:10 PM	#1
335Caliber Private 8 Rep 98 Posts Drives: Pure Power Join Date: Feb 2010 Location: Las Vegas iTrader: (0)	How loud is your cooling fan??? Hey guys, I always thought my fan in my engine compartment was a bit loud, but it never bothered me or was very noticeable. Over the last week though, it has become extremely loud. Usually it would be loud for a few minutes when i start up the car then settle down, but now its constantly LOUD. Today i parked over at Stonecold to get some ice cream and left the car running outside. When I came out, even from 30 feet away, it sounded as if there was a huge pickup truck or 18 wheeler out there mking that noise. Usually when my car is on and i stand outside the car, i don't even know its on...thats how it should be. But lately its just as if the fan gets stuck on hyperdrive and stays there. It is always hot here in Vegas and temperature hasn't changed recently. I got the 2007 335i coupe. I am on Map 7, full bolt ons, pump gas. Anyone out there get similar issues. And yes I have researched the topic. There are many other topics out there about loud fans. I found them for 328i's and M5s and M3s but not for 335i. How would I go about troubleshooting this problem? don't wana take car to dealer with tune and full bolt ons. __________________ JB3 2.0 / AR CAT- DP's / BMS DCI / AMS FMIC / Forge DV's / Etc...
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09-25-2010, 05:44 PM	#2
TMR Brigadier General 394 Rep 3,161 Posts Drives: M3 Join Date: Jun 2008 Location: Torrance iTrader: (12)	Ive been having the same issue. Turned out to be a bad coolant temp sensor. I also remember some vender saying something about a faulty ECU causing a fan issue. __________________ 2015 M3 BPM Tuned, Eibach, Magnaflow and more www.tmrmzine.com/m3/f80 SOLD E92 Slēk Carbon Fiber Widebody M3 www.tmrmzine.com/m3/slek/ SOLD E92 335i Stage 3+ with all the toys www.tmrmzine.com/335/ SOLD E39 M5 Modded, What a great car! www.tmrmzine.com/m5/
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09-26-2010, 02:06 AM	#3
335Caliber Private 8 Rep 98 Posts Drives: Pure Power Join Date: Feb 2010 Location: Las Vegas iTrader: (0)	how do you check for a bad sensor? __________________ JB3 2.0 / AR CAT- DP's / BMS DCI / AMS FMIC / Forge DV's / Etc...
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09-26-2010, 02:13 AM	#4
WOPALX Lieutenant Colonel 86 Rep 1,993 Posts Drives: 335i Sedan Join Date: May 2007 Location: Sydney, Australia iTrader: (2)	My fan has been very loud a few times lately, when it's been loud car seams to run with less boost as well. I checked for codes and found one relating to coolant sensor plausibility, so need tO get it fixed at some stage __________________ Vishnu PROcede V5 \| VK Motorworks FMIC \| AR Design OCC \| Forge DV's \| Bilstein PSS9 \| M3 Lower Control Arms & Caster Rods \| Quaife LSD \| HiTech Exhaust \| BMW Performance Illuminated Door Sills \| BMW Performance Gear Selector & Boot \| BMW Performance E-Brake Cover
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09-26-2010, 02:37 AM	#5
TMR Brigadier General 394 Rep 3,161 Posts Drives: M3 Join Date: Jun 2008 Location: Torrance iTrader: (12)	The sensor is $20 and took me 15 min to replace. __________________ 2015 M3 BPM Tuned, Eibach, Magnaflow and more www.tmrmzine.com/m3/f80 SOLD E92 Slēk Carbon Fiber Widebody M3 www.tmrmzine.com/m3/slek/ SOLD E92 335i Stage 3+ with all the toys www.tmrmzine.com/335/ SOLD E39 M5 Modded, What a great car! www.tmrmzine.com/m5/
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09-27-2010, 06:11 PM	#7
TMR Brigadier General 394 Rep 3,161 Posts Drives: M3 Join Date: Jun 2008 Location: Torrance iTrader: (12)	Part # 13621433076 Temperature sensor water/oil 1 13621433076 $16.27 __________________ 2015 M3 BPM Tuned, Eibach, Magnaflow and more www.tmrmzine.com/m3/f80 SOLD E92 Slēk Carbon Fiber Widebody M3 www.tmrmzine.com/m3/slek/ SOLD E92 335i Stage 3+ with all the toys www.tmrmzine.com/335/ SOLD E39 M5 Modded, What a great car! www.tmrmzine.com/m5/
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09-28-2010, 12:38 AM	#9
335Caliber Private 8 Rep 98 Posts Drives: Pure Power Join Date: Feb 2010 Location: Las Vegas iTrader: (0)	and where is the sensor located and how would i replace it? __________________ JB3 2.0 / AR CAT- DP's / BMS DCI / AMS FMIC / Forge DV's / Etc...
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09-28-2010, 01:44 AM	#10
TMR Brigadier General 394 Rep 3,161 Posts Drives: M3 Join Date: Jun 2008 Location: Torrance iTrader: (12)	Take the engine cover that covers the head off. Then on the front right ( near the oil filter ) you will see the sensor. Unscrew, unplug, rescrew plug in. You are done. __________________ 2015 M3 BPM Tuned, Eibach, Magnaflow and more www.tmrmzine.com/m3/f80 SOLD E92 Slēk Carbon Fiber Widebody M3 www.tmrmzine.com/m3/slek/ SOLD E92 335i Stage 3+ with all the toys www.tmrmzine.com/335/ SOLD E39 M5 Modded, What a great car! www.tmrmzine.com/m5/
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09-28-2010, 01:54 AM	#11
BuLoOoSki Colonel 749 Rep 2,108 Posts Drives: 2015 BMW M3 Join Date: Oct 2007 Location: Kuwait iTrader: (9)	I remember when I had my car, the fan was always loud when its warm and especially when the AC is on at the same time, so that's why you're hearing it now i think. I checked the car for codes and even took it to the dealer and they said its normal. They even showed me how their barely driven test drive car even had it. __________________ 2015 BMW F80 M3: Tractive EDC Suspension / Dinan Anti-Roll Bars / GC Camber Plates / KMP Dual Diff Mount / Girodisc Rotors / GT4 Brake Cooling Kit / PTF Flash Tune / Eisenmann Downpipes / CSF Heat Exchanger / BMS Charge Pipes 2007 BMW E92 335i (SOLD): BMS JB4 / Quaife LSD / Riss Racing DPs / Helix Intercooler / BMS Intake / STETT Charge Pipe / Forge DVs
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09-28-2010, 03:37 PM	#15
Terrance28 Brigadier General 109 Rep 3,334 Posts Drives: Crimson Red E92 Join Date: Nov 2007 Location: Killeen, TX iTrader: (17)	subscribed. __________________ Mods list got too long, lets just say more than enough.
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09-28-2010, 07:56 PM	#17
335Caliber Private 8 Rep 98 Posts Drives: Pure Power Join Date: Feb 2010 Location: Las Vegas iTrader: (0)	ok just bought the part from this website: http://www.bmwpartscounter.com/produ...621433076.html paid total 29.50 with shipping. will wait and see. I don't even know if this is the problem but will replace it anyway and find out. __________________ JB3 2.0 / AR CAT- DP's / BMS DCI / AMS FMIC / Forge DV's / Etc...
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09-28-2010, 08:47 PM	#18
TMR Brigadier General 394 Rep 3,161 Posts Drives: M3 Join Date: Jun 2008 Location: Torrance iTrader: (12)	I went to the dealer and got it for $15 __________________ 2015 M3 BPM Tuned, Eibach, Magnaflow and more www.tmrmzine.com/m3/f80 SOLD E92 Slēk Carbon Fiber Widebody M3 www.tmrmzine.com/m3/slek/ SOLD E92 335i Stage 3+ with all the toys www.tmrmzine.com/335/ SOLD E39 M5 Modded, What a great car! www.tmrmzine.com/m5/
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09-28-2010, 11:08 PM	#20
335Caliber Private 8 Rep 98 Posts Drives: Pure Power Join Date: Feb 2010 Location: Las Vegas iTrader: (0)	haven't checked yet. i guess i should have first, but i just know my fan doesn't sound right. I've had this car long enough to know every inch of it and every sound it makes. will let you know __________________ JB3 2.0 / AR CAT- DP's / BMS DCI / AMS FMIC / Forge DV's / Etc...
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09-29-2010, 11:14 AM	#21
M3 Eater Major 36 Rep 1,054 Posts Drives: 335i Sedan Join Date: May 2010 Location: Unknown iTrader: (3) Garage List 2007 335i [0.00]	I have a winding sound when AC on only. I thought it was the fan and maybe it is but only when the AC is on. If I hold 4K rpms in 2nd or 3rd or 4th gear, I hear this yeow, yeow, yeow, yeow...Like my school bus sounded so many years ago... Dealer said they didn't hear anything and that I need to schedual to take a tech on a ride. __________________ JB4 beta 15 ohms FSB,AEM inline filter/ CM 10, ETS fmic, ER custom made charge pipe,TSW Donnington 18's,Simitumo HTRZ3, Injen DCI, AR DPs, Forge DVs, AA SLD, Koni FSD, ZSP springs.
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