BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > BIMMERPOST Universal Forums > General BMW News and Cars Discussion
 
GetBMWParts
Post Reply
 
Thread Tools Search this Thread
      03-27-2008, 06:57 PM   #1
Expired
Fanatic
 
Expired's Avatar
 
Drives: N/A
Join Date: Sep 2007
Location: Houston, Tx

Posts: 175
iTrader: (0)

Send a message via AIM to Expired
WTFXX.. BMW Overheat..

kk, went to a friends house, then we left to go downtown. Car starts to overheat after about 7 miles.. (right by my house)
So, we make a quick turn around and the car starts to cool back down and rest at 12 o'clock. Get about a mile from the house and it starts to heat up again, then right as I get to my house it gets right by the red. Stays near the red for a bit after the car is off.

Anyways, we open it up and see some fluid around the top of the coolant reservoir.
Let it cool down and then proceed to take off the reservoir.. The nipple on the top of it had cracked and could be pulled off by hand. We go to Bap-Geon and get a new reservoir, install it and then run it down the street. Starts to overheat again..

We couldn't find a leak anywhere in sight.. I then find some sensor hanging down and touching the plastic under body. WTF?!?! I clean it off and then search around for what it could have fallen off of. Put it back in place and drive it down the street. (It mounted on the housing to the fan, appeared to be a heat sensor.) Drove it down the street and it would get near the white line to the right for about 7 seconds and then drop back down to the center.

My 'down the street' is about 5 miles going 45mph, and in that time after i put the 'sensor' back it would only go towards the white line to the right twice on a test run.

Now the new reservoir has sprung a leak, apparently the glue used to keep the top on didn't seal all the way around. Losing about half of the reservoir fluid a day. (After test runs and stuff, and then leaving it to sit till the next day)

Tomorrow I'm taking back the "new" reservoir and getting another one. Going to install that, jack up the front and take off the plastic underbody which has a nice amount of crud on it now.. -___- Then check for any leaks anywhere else.

Wondering if the reservoir could be leaking this much, or could I possibly have another leak somewhere..
Anyone had any problems like this??
Definitely disliking my car right now.. -___-

-Nathan
__________________
People only know what you tell them.Only in ROFL Copter.
Expired is offline   United_States
0
Reply With Quote
      03-28-2008, 12:17 AM   #2
PresaMat
Major
 
PresaMat's Avatar
 
Drives: 67 GT500,69 Boss 429, 335i
Join Date: Sep 2006
Location: Houston,TX

Posts: 1,170
iTrader: (0)

Garage List
Huh? English please.
__________________
-Mat

Tuned E92 335, Riss Racing downpipes! And hopefully over 400RWHP!!
PresaMat is offline   United_States
0
Reply With Quote
      03-28-2008, 12:39 AM   #3
N54YO
Lieutenant
 
N54YO's Avatar
 
Drives: 2008 BMW E92 335/2005 Scion tC
Join Date: Oct 2007
Location: San Leandro, CA

Posts: 423
iTrader: (1)

Send a message via AIM to N54YO
I don't think anybody can understand what you just wrote to help you man...
__________________

2008 BMW E92 335i
Sparkling Graphite/Coral Red/Grey Poplar
Sport/Navi/Premium/Comfort/iPod/6-Speed Manual
N54YO is offline   United_States
0
Reply With Quote
      03-28-2008, 10:21 AM   #4
wj4
Major General
 
Drives: E90 manual 335i
Join Date: Nov 2006
Location: Burbank, CA

Posts: 7,723
iTrader: (8)

Send a message via AIM to wj4
Damn, this is not AIM, man.
wj4 is offline   United_States
0
Reply With Quote
      03-29-2008, 10:08 AM   #5
Expired
Fanatic
 
Expired's Avatar
 
Drives: N/A
Join Date: Sep 2007
Location: Houston, Tx

Posts: 175
iTrader: (0)

Send a message via AIM to Expired
Uhhgg..
#1 BMW starts to overheat while driving it for around 10 minutes.
#2 Check the engine bay the next day.
#3 Find that the nipple on the cooling reservoir is cracked and obviously leaking.
#4 Replace the part and it is still overheating.
#5 Find a sensor hanging and return it to the housing of the fan between the engine and radiator. (Apparently listed as an AC cooling sensor or something in parts stores)
#6 After a few 5 mile runs the temperature then would rise to the white line to the right just for a few seconds, and then come back down to normal. (It would only rise twice on a run, so we figured the sensor had something to do with it)
#6 I then noticed that the reservoir level had dropped, and we didn't know where the leak was.
#7 We then found that the glue used on the reservoir didn't seal all the way around and was leaking.
#8 I have another reservoir now and I am going to install it again today.

Could the reservoir alone be leaking half of the reservoirs coolant in one day alone?? Or could it be in combination with another leak??
Could that sensor be the reason that it was overheating?? (I guess I will find out after the leak is fixed..)

-Nathan
__________________
People only know what you tell them.Only in ROFL Copter.
Expired is offline   United_States
0
Reply With Quote
      03-29-2008, 12:16 PM   #6
Ryan@Motorwerks
Captain
 
Ryan@Motorwerks's Avatar
 
Drives: 335i Coupe
Join Date: Oct 2005
Location: Houston, TX

Posts: 941
iTrader: (0)

if your car is still under warranty, plz just get the dealership to look at it...
Ryan@Motorwerks is offline  
0
Reply With Quote
      03-29-2008, 07:13 PM   #7
PresaMat
Major
 
PresaMat's Avatar
 
Drives: 67 GT500,69 Boss 429, 335i
Join Date: Sep 2006
Location: Houston,TX

Posts: 1,170
iTrader: (0)

Garage List
Quote:
Originally Posted by 335e90 View Post
if your car is still under warranty, plz just get the dealership to look at it...
+1000

Also... when stating my BMW is overheating that tells us very little. Are you running a 08 m3? a 1985 318i?
__________________
-Mat

Tuned E92 335, Riss Racing downpipes! And hopefully over 400RWHP!!
PresaMat is offline   United_States
0
Reply With Quote
      03-29-2008, 07:53 PM   #8
footie
Major General
 
footie's Avatar
 
Drives: ????????????
Join Date: Oct 2007
Location: BMW M3 will get a V6TT

Posts: 7,507
iTrader: (0)

Garage List
2008 E92 M3  [0.00]
What miles are on the engine and also have you ever driven it that hard that it's over heated at a time. If it's not a sensor it sounds like a warped head, I did something similar to an Escort RS2000 and the thing kept overheating until I replaced the head.

It only a guess but either way you will need it looked at before some real damage is done, if not already.
footie is offline   No_Country
0
Reply With Quote
      03-30-2008, 08:47 PM   #9
Expired
Fanatic
 
Expired's Avatar
 
Drives: N/A
Join Date: Sep 2007
Location: Houston, Tx

Posts: 175
iTrader: (0)

Send a message via AIM to Expired
Quote:
Originally Posted by footie View Post
What miles are on the engine and also have you ever driven it that hard that it's over heated at a time. If it's not a sensor it sounds like a warped head, I did something similar to an Escort RS2000 and the thing kept overheating until I replaced the head.

It only a guess but either way you will need it looked at before some real damage is done, if not already.
50,3XX
Nope, I baby it.. IIRC it started to overheat 1-2 days after a drive home from Dallas.
Hopefully it is nothing serious or costly.. -___-

Quote:
Originally Posted by PresaMat View Post
+1000

Also... when stating my BMW is overheating that tells us very little. Are you running a 08 m3? a 1985 318i?
'01 530i

Quote:
Originally Posted by 335e90 View Post
if your car is still under warranty, plz just get the dealership to look at it...
I was hoping to avoid the dealership with a minor fix, but now I'm taking it in tomorrow.. And it isn't under warranty..

-Nathan
__________________
People only know what you tell them.Only in ROFL Copter.
Expired is offline   United_States
0
Reply With Quote
      03-31-2008, 09:02 AM   #10
335xi
Private
 
Drives: 335xi
Join Date: Mar 2007
Location: Toronto

Posts: 92
iTrader: (0)

One of the most common problems in the e39 5-series is the plastic end-tanks of the radiator cracking. On my 2001 540 the radiator was replaced after about 50k miles.

My 540 suffered from the two most common e39 5-series problems, cracked radiator end tank and bad fan speed resistor.

Why are you asking this question on this board, there are a number of e39 boards that would be far more helpful.
335xi is offline  
0
Reply With Quote
      04-02-2008, 01:28 PM   #11
Expired
Fanatic
 
Expired's Avatar
 
Drives: N/A
Join Date: Sep 2007
Location: Houston, Tx

Posts: 175
iTrader: (0)

Send a message via AIM to Expired
Quote:
Originally Posted by 335xi View Post
One of the most common problems in the e39 5-series is the plastic end-tanks of the radiator cracking. On my 2001 540 the radiator was replaced after about 50k miles.

My 540 suffered from the two most common e39 5-series problems, cracked radiator end tank and bad fan speed resistor.

Why are you asking this question on this board, there are a number of e39 boards that would be far more helpful.
Because I like this board, and it's the only BMW forum I feel like being a member of..

Anyways, on the way to the dealership it got into the red again, so I pulled over and popped the hood. The engine didn't feel overheated at all so we figured it had to be a bad sensor or something.. I then started the car up and the temp gauge dropped back down to normal in about 2-3 seconds. We repeated this process about 3 times on the way to the dealership, and we then knew the car wasn't overheating and it had to be a sensor.. Thank god.

They replaced the sensor and didn't find any leaks dealing with the radiator fluid, so all should be well now.

-Nathan
__________________
People only know what you tell them.Only in ROFL Copter.
Expired is offline   United_States
0
Reply With Quote
      04-02-2008, 03:13 PM   #12
335xi
Private
 
Drives: 335xi
Join Date: Mar 2007
Location: Toronto

Posts: 92
iTrader: (0)

Good outcome, congrats.
335xi is offline  
0
Reply With Quote
Post 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 -5. The time now is 10:08 AM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, 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