07 e90 335i with high speed fans on all the time

sabredog · 04-09-2015, 04:25 PM

noticed the other day that i could hear the fan running on high when i first started the car after sitting all night. a/c was not on . i checked my jb4 and tried to shut the jb4 off, fans just kept running. so thats not the problem. checked the coolant reservior and it was full. my car only has 54000 miles on it. is there a high speed fan relay or thermosensor that sticks on these cars ? it is an 07 . other than this it runs fine, thanks

byebyev8 · 04-09-2015, 04:30 PM

Jb4 max cool mode

ONE_slow_m5 · 04-09-2015, 04:33 PM

Quote:

Originally Posted by sabredog

noticed the other day that i could hear the fan running on high when i first started the car after sitting all night. a/c was not on . i checked my jb4 and tried to shut the jb4 off, fans just kept running. so thats not the problem. checked the coolant reservior and it was full. my car only has 54000 miles on it. is there a high speed fan relay or thermosensor that sticks on these cars ? it is an 07 . other than this it runs fine, thanks

Fans running at high speed usually indicate a water pump about to go bad. Usually around 60-70k they are bound to go out.

CHECKERED · 04-09-2015, 04:40 PM

Quote:

Originally Posted by Blown_by_TWINS

Fans running at high school usually indicate a water pump about to go bad. Usually around 60-70k they are bound to go out.

fans running full blast at the high school could indicate hot students

sabredog · 04-09-2015, 04:41 PM

jb4 max cool mode was ruled out when i shut the jb4 off. thanks though. would the fan come on full speed if the engine had not been started for over 12 hours if it was a water pump ?

ferocity02 · 04-09-2015, 05:05 PM

Quote:

Originally Posted by sabredog

jb4 max cool mode was ruled out when i shut the jb4 off. thanks though. would the fan come on full speed if the engine had not been started for over 12 hours if it was a water pump ?

Yes, if a water pump or coolant sensor fault code it stored in the DME then the fan will come on instantly when you start the car, even if its cold and has been sitting for awhile.

Try scanning for codes with the JB4. I'm not sure if it will show codes that aren't causing CEL's. If you have INPA then use it and it will show you all codes.

You can also try the coolant auto-bleed procedure. If it doesn't run then there is a good chance the pump is shot. You should hear/see coolant flowing into the reservoir. Check this thread for steps on the auto bleed procedure, they are at the end.

http://www.e90post.com/forums/showthread.php?t=248187

I went through this in October. My code was 2E82 and fan was on high all the time w/o any other signs of a problem. But here's what my failed pump sounded like when I tried to do the auto-bleed:

tc535i · 04-09-2015, 05:10 PM

sounds like a bad pump

sabredog · 04-09-2015, 07:49 PM

great info guys. sad that the water pump fails at 54000 miles but what can you do.anyone know how much a water pump typically goes for ? just the part. thanks again

n54gte · 04-09-2015, 08:43 PM

Quote:

Originally Posted by sabredog

great info guys. sad that the water pump fails at 54000 miles but what can you do.anyone know how much a water pump typically goes for ? just the part. thanks again

got mine with termostat package for about $500 on ecstunin

sabredog · 04-09-2015, 09:32 PM

thanks

ferocity02 · 04-09-2015, 10:49 PM

Got myself a pump, thermostat, coolant, and coolant temp sensor all for about $430 on ebay, all OEM too.

amr_e90 · 04-09-2015, 10:53 PM

Thats cheap ^

sabredog · 04-19-2015, 10:03 AM

just wanted to thank everyone that responded to my question . it was the water pump. i installed it yesterday and performed to water pump bleed out cycle twice and all is good. no more fans oil temps around 210-230. running great. thanks again for all your help

TheRealMccoy24 · 06-30-2015, 01:47 PM

Just had my water pump replaced and the fan is still kicking on. Don't think its running as hard but its definitely running.

ferocity02 · 06-30-2015, 01:55 PM

Quote:

Originally Posted by TheRealMccoy24

Just had my water pump replaced and the fan is still kicking on. Don't think its running as hard but its definitely running.

Might want to clear codes. It can also run if the AC is on.

TheRealMccoy24 · 06-30-2015, 02:20 PM

Quote:

Originally Posted by ferocity02

Might want to clear codes. It can also run if the AC is on.

Will do. Only code im getting is 2D2E -Angle of throttle valve -Intake underpressue. correlation

Thanks for the reply.

ferocity02 · 06-30-2015, 02:25 PM

Quote:

Originally Posted by TheRealMccoy24

Will do. Only code im getting is 2D2E -Angle of throttle valve -Intake underpressue. correlation

Thanks for the reply.

That shouldn't cause the fans to come on. I get that code too sometimes, pretty common with JB4.

TheRealMccoy24 · 06-30-2015, 02:26 PM

Quote:

Originally Posted by ferocity02

That shouldn't cause the fans to come on. I get that code too sometimes, pretty common with JB4.

Yeah was looking up the code and your name came up again haha! After the Cobb tune did it continue to throw that code?

ferocity02 · 06-30-2015, 02:29 PM

Quote:

Originally Posted by TheRealMccoy24

Yeah was looking up the code and your name came up again haha! After the Cobb tune did it continue to throw that code?

I don't think it came back with Cobb.

e92dropped · 06-30-2015, 02:44 PM

funny part is I never had the fan go on like this, I just had a lot of coolant leaking from the side of the water pump, it was like when the car reached operating temp it started gushing out. found out it was a hairline crack by one of the bolts

starbai · 07-08-2015, 01:03 AM

Well, my fan is running all the time, had a yellow coolant light warning on the dash today, added a bit of coolant and the light went away but due to the fans all the time I'm thinking the pump is going. I'm gonna do the work myself, my question here is wheres the best place to buy?

http://www.ecstuning.com/News/BMW_E9...PumpThermostat

ECS tuning has a few packages... I would like to go with ECS's package thats $487 vs the OEM kit which is $564... anyone have any experience with it? Or should I just bite the bullet and fork over the extra $80?

Any other sources for better pricing on OEM parts?

TheRealMccoy24 · 09-20-2015, 03:56 AM

Quote:

Originally Posted by starbai

Well, my fan is running all the time, had a yellow coolant light warning on the dash today, added a bit of coolant and the light went away but due to the fans all the time I'm thinking the pump is going. I'm gonna do the work myself, my question here is wheres the best place to buy?

http://www.ecstuning.com/News/BMW_E9...PumpThermostat

ECS tuning has a few packages... I would like to go with ECS's package thats $487 vs the OEM kit which is $564... anyone have any experience with it? Or should I just bite the bullet and fork over the extra $80?

Any other sources for better pricing on OEM parts?

It's definitely worth it to stick with OEM.

http://www.getbmwparts.com/parts/200...agramCallOut=1

This site is good to have if you don't already use it.

Late reply... Did you resolve?

04-09-2015, 04:25 PM	#1
sabredog Second Lieutenant 23 Rep 222 Posts Drives: 2007 335i 4 dr Join Date: Jun 2008 Location: delaware iTrader: (3)	07 e90 335i with high speed fans on all the time noticed the other day that i could hear the fan running on high when i first started the car after sitting all night. a/c was not on . i checked my jb4 and tried to shut the jb4 off, fans just kept running. so thats not the problem. checked the coolant reservior and it was full. my car only has 54000 miles on it. is there a high speed fan relay or thermosensor that sticks on these cars ? it is an 07 . other than this it runs fine, thanks
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04-09-2015, 04:30 PM	#2
byebyev8 Private First Class 84 Rep 189 Posts Drives: e92 335i f12 m6 Join Date: May 2014 Location: Kenosha wi iTrader: (1)	Jb4 max cool mode
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04-09-2015, 04:41 PM	#5
sabredog Second Lieutenant 23 Rep 222 Posts Drives: 2007 335i 4 dr Join Date: Jun 2008 Location: delaware iTrader: (3)	jb4 max cool mode was ruled out when i shut the jb4 off. thanks though. would the fan come on full speed if the engine had not been started for over 12 hours if it was a water pump ?
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04-09-2015, 05:10 PM	#7
tc535i Lieutenant Colonel 222 Rep 1,818 Posts Drives: 2007 335i, 2001 330i, 1995 M3 Join Date: Sep 2013 Location: West Los Angeles iTrader: (1)	sounds like a bad pump
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04-09-2015, 07:49 PM	#8
sabredog Second Lieutenant 23 Rep 222 Posts Drives: 2007 335i 4 dr Join Date: Jun 2008 Location: delaware iTrader: (3)	great info guys. sad that the water pump fails at 54000 miles but what can you do.anyone know how much a water pump typically goes for ? just the part. thanks again
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04-09-2015, 09:32 PM	#10
sabredog Second Lieutenant 23 Rep 222 Posts Drives: 2007 335i 4 dr Join Date: Jun 2008 Location: delaware iTrader: (3)	thanks
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04-09-2015, 10:49 PM	#11
ferocity02 Colonel 553 Rep 2,085 Posts Drives: 2013 135is Join Date: May 2014 Location: USA iTrader: (8)	Got myself a pump, thermostat, coolant, and coolant temp sensor all for about $430 on ebay, all OEM too. __________________ 2013 135is DCT Carbon Black Metallic
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04-09-2015, 10:53 PM	#12
amr_e90 Captain 215 Rep 803 Posts Drives: e90 335xi 6mt Join Date: Apr 2012 Location: boston,Ma iTrader: (2)	Thats cheap ^
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04-19-2015, 10:03 AM	#13
sabredog Second Lieutenant 23 Rep 222 Posts Drives: 2007 335i 4 dr Join Date: Jun 2008 Location: delaware iTrader: (3)	just wanted to thank everyone that responded to my question . it was the water pump. i installed it yesterday and performed to water pump bleed out cycle twice and all is good. no more fans oil temps around 210-230. running great. thanks again for all your help
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06-30-2015, 01:47 PM	#14
TheRealMccoy24 Private First Class 44 Rep 131 Posts Drives: '18 Comp M3 Join Date: Apr 2015 Location: NorCal (North Bay) iTrader: (0)	Just had my water pump replaced and the fan is still kicking on. Don't think its running as hard but its definitely running.
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06-30-2015, 02:44 PM	#20
e92dropped Private 2 Rep 50 Posts Drives: e92 08 335i Join Date: Jun 2015 Location: toronto iTrader: (0)	funny part is I never had the fan go on like this, I just had a lot of coolant leaking from the side of the water pump, it was like when the car reached operating temp it started gushing out. found out it was a hairline crack by one of the bolts
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07-08-2015, 01:03 AM	#21
starbai PPRSWCE 663 Rep 1,854 Posts Drives: 18 Tanzanite Blue F80 ZCP Join Date: May 2009 Location: Orlando FL iTrader: (2)	Well, my fan is running all the time, had a yellow coolant light warning on the dash today, added a bit of coolant and the light went away but due to the fans all the time I'm thinking the pump is going. I'm gonna do the work myself, my question here is wheres the best place to buy? http://www.ecstuning.com/News/BMW_E9...PumpThermostat ECS tuning has a few packages... I would like to go with ECS's package thats $487 vs the OEM kit which is $564... anyone have any experience with it? Or should I just bite the bullet and fork over the extra $80? Any other sources for better pricing on OEM parts?
	Appreciate 0 Quote