E90Post
 


ECS BMW
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > E90 N52 Engine Coolant Change



Reply
 
Thread Tools Search this Thread
      04-02-2011, 09:27 PM   #45
Stangorang
Major
Stangorang's Avatar
United_States
30
Rep
1,237
Posts

Drives: 2007 E90 335i
Join Date: Mar 2010
Location: SoCal

iTrader: (9)

Quote:
Originally Posted by mag12000x View Post
"What does the actual venting procedure do?"

Venting or "Bleeding" (Bentley Manual) is the system designed in the E9X to flush out any trapped air in the engine cooling system. Without it, you can cause damage to the engine by allowing it to run and creating "hot spots".

"Should the bleed screw be open while the pump is in the venting mode and running?"

No, the bleed screw should be opened for refilling purpose only, closed during 12minute bleeding cycle.

"I changed my coolant out and have run the venting procedure twice now, but my temps seem to be slightly higher than I recall before I did the flush."

What car do you have?, How are you checking your temperature? The E90 330i doesn't come with a temp gauge....
I understand the purpose of the venting procedure, but I don't understand how it actually accomplishes the venting.

I am basing my temps off the oil temps.

Vented twice at this point, oh well.
Appreciate 0
      04-04-2011, 03:22 PM   #46
Reflex_NL
Private
Netherlands
11
Rep
64
Posts

Drives: BMW 330i (E90) & Z4 3.0i (E85)
Join Date: Apr 2009
Location: Eindhoven

iTrader: (0)

I initiated the venting cycle as a check to see if the pumping is working correctly and noticed in the beginning the pump spinning in small cycles (on... off...on...off) and saw small, intermittent steams of water being pumped into the reservoir (by opening the coolant refill cap during the process). After 5 minutes it looked more like a wash cycle with the pump running constantly... did any of notice the same behavior?
Appreciate 0
      04-04-2011, 03:25 PM   #47
Stangorang
Major
Stangorang's Avatar
United_States
30
Rep
1,237
Posts

Drives: 2007 E90 335i
Join Date: Mar 2010
Location: SoCal

iTrader: (9)

Quote:
Originally Posted by Reflex_NL View Post
I initiated the venting cycle as a check to see if the pumping is working correctly and noticed in the beginning the pump spinning in small cycles (on... off...on...off) and saw small, intermittent steams of water being pumped into the reservoir (by opening the coolant refill cap during the process). After 5 minutes it looked more like a wash cycle with the pump running constantly... did any of notice the same behavior?
Same. It's normal.
Appreciate 0
      04-04-2011, 04:03 PM   #48
Reflex_NL
Private
Netherlands
11
Rep
64
Posts

Drives: BMW 330i (E90) & Z4 3.0i (E85)
Join Date: Apr 2009
Location: Eindhoven

iTrader: (0)

Quote:
Originally Posted by Stangorang View Post
Same. It's normal.
Thanks for letting me but the cycle didn't stop after 12 min.... not even after 30 min...

still ok?
Appreciate 0
      04-04-2011, 04:05 PM   #49
Stangorang
Major
Stangorang's Avatar
United_States
30
Rep
1,237
Posts

Drives: 2007 E90 335i
Join Date: Mar 2010
Location: SoCal

iTrader: (9)

Quote:
Originally Posted by Reflex_NL View Post
Thanks for letting me but the cycle didn't stop after 12 min.... not even after 30 min...

still ok?
Should stop after 12 mins. Also probably shouldn't be opening the cap during the process.
Appreciate 0
      04-05-2011, 10:39 PM   #50
ENINTY
Banned
76
Rep
3,415
Posts

Drives: 2006 325i Sport
Join Date: Jun 2006
Location: Virginia

iTrader: (0)

Quote:
Originally Posted by txusa03 View Post
I have 2. I have the very early e90 (built date April 05). Look at number 3.
I was digging around in my computer today and found a picture I took of my radiator. One (1) drain...
Attached Images
 
Appreciate 0
      04-05-2011, 11:10 PM   #51
txusa03
Major General
209
Rep
6,567
Posts

Drives: TS330iPPSP6MT
Join Date: Jul 2005
Location: Planet Earth

iTrader: (3)

That is odd for manufacturer to do that, I believed you even without the photo. I just dont have a clue why bmw would do that. Try putting your vin in Realoem and see what comes up in their system.
__________________
under construction!
Appreciate 0
      04-06-2011, 04:54 AM   #52
check_012
New Member
United_States
0
Rep
4
Posts

Drives: 2006 330i
Join Date: Apr 2011
Location: California

iTrader: (0)

venting

hi I recently change my t-stat and replace the old coolant. I was wondering if venting is required in this procedure coz I was not able to do so., and is this the reason why I still have the SES even if I already erase it with the code reader. Please help/advice. Thanks.
Appreciate 0
      04-06-2011, 12:47 PM   #53
ENINTY
Banned
76
Rep
3,415
Posts

Drives: 2006 325i Sport
Join Date: Jun 2006
Location: Virginia

iTrader: (0)

Quote:
Originally Posted by txusa03 View Post
That is odd for manufacturer to do that, I believed you even without the photo. I just dont have a clue why bmw would do that. Try putting your vin in Realoem and see what comes up in their system.
I did run my VIN, it comes up with the same picture you posted. I didn't think you didn't believe me, I just wanted to confirm for myself really, because I've been working on cars all my life (since before I could drive) and I was worried I was getting senile. Maybe it was a production change around the time my car was built in April 2006, and I just got an old one. I guess the only issue I have is it takes longer to drain.
Appreciate 0
      04-08-2011, 03:57 PM   #54
gino58
Enlisted Member
United_States
1
Rep
42
Posts

Drives: 2006 325i zsp
Join Date: Oct 2008
Location: elk grove, ca

iTrader: (0)

2 radiator drain plugs

I got Sept 2005 build E90 auto, zsp and also has 2 drain plugs. Just did coolant drain a week ago at 57K. venting procedure took 12 minutes as Eninty said.
Appreciate 0
      04-10-2011, 09:03 PM   #55
ENINTY
Banned
76
Rep
3,415
Posts

Drives: 2006 325i Sport
Join Date: Jun 2006
Location: Virginia

iTrader: (0)

Quote:
Originally Posted by gino58 View Post
I got Sept 2005 build E90 auto, zsp and also has 2 drain plugs. Just did coolant drain a week ago at 57K. venting procedure took 12 minutes as Eninty said.
Now maybe you are on to something I didn't think of; my car has a manual transmission, maybe the auto trans cars have two drains????
Appreciate 0
      04-10-2011, 10:37 PM   #56
bumere90
Grozniy
United_States
78
Rep
2,601
Posts

Drives: Carless
Join Date: Jan 2009
Location: FL

iTrader: (12)

I have the same radiator with one drain whole
__________________
-fatman
Appreciate 0
      04-12-2011, 05:13 PM   #57
check_012
New Member
United_States
0
Rep
4
Posts

Drives: 2006 330i
Join Date: Apr 2011
Location: California

iTrader: (0)

Thumbs up

Quote:
Originally Posted by check_012 View Post
hi I recently change my t-stat and replace the old coolant. I was wondering if venting is required in this procedure coz I was not able to do so., and is this the reason why I still have the SES even if I already erase it with the code reader. Please help/advice. Thanks.
- I did the venting process., and SES code is gone! tap some coolant about (1500ml) thanks ENINTY for the post.
Appreciate 0
      04-21-2011, 08:01 AM   #58
txusa03
Major General
209
Rep
6,567
Posts

Drives: TS330iPPSP6MT
Join Date: Jul 2005
Location: Planet Earth

iTrader: (3)

Quote:
Originally Posted by ENINTY View Post
Now maybe you are on to something I didn't think of; my car has a manual transmission, maybe the auto trans cars have two drains????
I have a manual btw...
__________________
under construction!
Appreciate 0
      04-21-2011, 12:16 PM   #59
ENINTY
Banned
76
Rep
3,415
Posts

Drives: 2006 325i Sport
Join Date: Jun 2006
Location: Virginia

iTrader: (0)

Quote:
Originally Posted by txusa03 View Post
I have a manual btw...
Then all I can say is
Appreciate 0
      05-16-2011, 10:39 PM   #60
Tmaccus
Private
Tmaccus's Avatar
6
Rep
72
Posts

Drives: E90 N52, E93 N54, E46 S54
Join Date: Jul 2010
Location: philly/central NJ

iTrader: (0)

how much coolant should I buy?
__________________

E46 S54: Black on Black, 6MT, Agency exhaust, ESS chip, KW2 coilovers, H&R Spacers. E93 N54: Black on Black, 6MT, FULLY STOCK. Sports PKG. E90 N52: Black, AT, H&R Sport springs, Hyper Silver 19" VMR V715 staggered
Appreciate 0
      05-17-2011, 12:28 AM   #61
AlanAZ
Captain
AlanAZ's Avatar
16
Rep
811
Posts

Drives: E90 325i sport manual
Join Date: Aug 2009
Location: Scottsdale, AZ

iTrader: (4)

1 gallon is more than enough (BMW coolant - should run about $21) and a gallon of distilled water. Mix 50/50 outside of the radiator, I used a large empty water container. [Coolant is toxic, make sure it's not reused for drinking.]

Last edited by AlanAZ; 01-07-2012 at 12:21 PM.
Appreciate 0
      05-22-2011, 05:21 PM   #62
335i Pal
Second Lieutenant
335i Pal's Avatar
United_States
5
Rep
284
Posts

Drives: 335i Sedan
Join Date: Oct 2010
Location: Ohio

iTrader: (1)

I have 335i, and I could not find the drain plug when I had it up on the rack. Is it because the intercooler is in the way?

And if the intercooler is in the way, anyone have a write up for how to take that out?
__________________
335i E90 | BMS DCI | Black Matte Grill | JB4 | Logic 7 | Sport | Premium | Cold |
Appreciate 0
      05-28-2011, 08:45 PM   #63
Tmaccus
Private
Tmaccus's Avatar
6
Rep
72
Posts

Drives: E90 N52, E93 N54, E46 S54
Join Date: Jul 2010
Location: philly/central NJ

iTrader: (0)

Do you leave reservoir bleed open or close when you are done with the entire process? I mean after you're done flushing and everything.

My camry had a hole so extra coolant can escape. If you close everything, is it okay?
__________________

E46 S54: Black on Black, 6MT, Agency exhaust, ESS chip, KW2 coilovers, H&R Spacers. E93 N54: Black on Black, 6MT, FULLY STOCK. Sports PKG. E90 N52: Black, AT, H&R Sport springs, Hyper Silver 19" VMR V715 staggered
Appreciate 0
      05-29-2011, 11:10 AM   #64
Tmaccus
Private
Tmaccus's Avatar
6
Rep
72
Posts

Drives: E90 N52, E93 N54, E46 S54
Join Date: Jul 2010
Location: philly/central NJ

iTrader: (0)

The color of coolant that came out of my car was dark green. Is this normal from the factory?
__________________

E46 S54: Black on Black, 6MT, Agency exhaust, ESS chip, KW2 coilovers, H&R Spacers. E93 N54: Black on Black, 6MT, FULLY STOCK. Sports PKG. E90 N52: Black, AT, H&R Sport springs, Hyper Silver 19" VMR V715 staggered
Appreciate 0
      05-30-2011, 08:39 AM   #65
ENINTY
Banned
76
Rep
3,415
Posts

Drives: 2006 325i Sport
Join Date: Jun 2006
Location: Virginia

iTrader: (0)

Yes. BMW coolant is very deep colored bluish green and in some light conditions looks dark green.
Appreciate 0
      05-30-2011, 08:43 AM   #66
ENINTY
Banned
76
Rep
3,415
Posts

Drives: 2006 325i Sport
Join Date: Jun 2006
Location: Virginia

iTrader: (0)

Quote:
Originally Posted by Tmaccus View Post
Do you leave reservoir bleed open or close when you are done with the entire process? I mean after you're done flushing and everything.

My camry had a hole so extra coolant can escape. If you close everything, is it okay?
You only open the bleed screw during the re-fill procedure, then you close it when bleeding the air from the system and keep it close thereafter. After the bleed procedure is completed you open the reservior cap to leat any air escape, then top off the coolant level, then close the cap.
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 11:35 PM.




e90post
e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST