Interesting Coolant Leak - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 06-14-2007, 06:04 PM
n00b
 
Join Date: May 2007
Posts: 21
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
reepicheep_85 will become famous soon enough reepicheep_85 will become famous soon enough
(Thread Starter)
Interesting Coolant Leak

So, I have been dealing with a coolant leak on my 92' 325is for awhile now and still don't have a solid idea where the leak is. It appears that the coolant is leaking out near the tranny. Are there any coolant lines that run to the tranny? This all started when it randomly overheated on me while I was heading to work. I have since replaced the entire cooling system (thermostat, alum. t-stat housing, radiator, metal impeller water pump, converted to elec. fan, all new gaskets and bled the system properly) My first theory was that the engine had overheated so badly that it had pushed the coolant through the seals somewhere because it only leaks when the car gets hot. Anyone have any ideas? Has this ever happened to anyone? I've searched all over and can't come up with a viable answer. Any help is much appreciated.
reepicheep_85 is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 06-14-2007, 08:50 PM
5th Gear Member
 
Join Date: May 2004
Location: NC
Posts: 1,118
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Starmavin is a jewel in the rough Starmavin is a jewel in the rough Starmavin is a jewel in the rough Starmavin is a jewel in the rough
Was your coolant rusty color?
Starmavin is offline  
#3 (permalink) Old 06-14-2007, 08:54 PM
n00b
 
Join Date: May 2007
Posts: 21
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
reepicheep_85 will become famous soon enough reepicheep_85 will become famous soon enough
(Thread Starter)
Not at first. When I re-filled and let it warm up I just used water (didn't see the point in wasting coolant if it's just gonna leak out) and it is coming out slightly rusty looking. I've never seen a car do that before, what does it mean?
reepicheep_85 is offline  
#4 (permalink) Old 06-15-2007, 09:23 PM
5th Gear Member
 
Join Date: May 2004
Location: NC
Posts: 1,118
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Starmavin is a jewel in the rough Starmavin is a jewel in the rough Starmavin is a jewel in the rough Starmavin is a jewel in the rough
It could mean internal corrosion, if it's not then don't worry about it. Can you smell coolant with your heat on?
Starmavin is offline  
#5 (permalink) Old 06-16-2007, 10:15 PM
Science Roolz!
 
Join Date: Aug 2004
Location: Indianapolis, Indiana
Posts: 7,043
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
SHAHAB323IS is a name known to all SHAHAB323IS is a name known to all SHAHAB323IS is a name known to all SHAHAB323IS is a name known to all SHAHAB323IS is a name known to all SHAHAB323IS is a name known to all
Send a message via AIM to SHAHAB323IS
if it looks like it's leaking by the tranny, it's most likely a leak in your heater core, it can be hard to determine because it will leak onto the top of the transmission and at times you won't be able to see a leak, best bet would be to take it to a shop and have them pressure test it, they will be able to determine where the leak is coming from and you can take it from there

2011 Mazda2
1990 Mazda Miata
SHAHAB323IS is offline  
#6 (permalink) Old 06-17-2007, 01:27 AM
n00b
 
Join Date: May 2007
Posts: 21
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
reepicheep_85 will become famous soon enough reepicheep_85 will become famous soon enough
(Thread Starter)
Quote:
Originally Posted by Starmavin
It could mean internal corrosion, if it's not then don't worry about it. Can you smell coolant with your heat on?
yeah, I can actually smell some coolant when it's on. Are there any coolant lines that go to the tranny itself? It seems like there are, but I'm having a hard time routing them.
reepicheep_85 is offline  
#7 (permalink) Old 06-17-2007, 10:46 AM
5th Gear Member
 
Join Date: May 2004
Location: NC
Posts: 1,118
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Starmavin is a jewel in the rough Starmavin is a jewel in the rough Starmavin is a jewel in the rough Starmavin is a jewel in the rough
No the trans fluid goes to the rad not the other way around. Thats why I was asking if you could smell coolant, you heater core could be leaking.
Starmavin is offline  
#8 (permalink) Old 06-17-2007, 03:12 PM
n00b
 
Join Date: May 2007
Posts: 21
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
reepicheep_85 will become famous soon enough reepicheep_85 will become famous soon enough
(Thread Starter)
Ok, Thanks for the help I will check it out today.
reepicheep_85 is offline  
#9 (permalink) Old 06-17-2007, 05:06 PM
n00b
 
Join Date: May 2007
Posts: 21
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
reepicheep_85 will become famous soon enough reepicheep_85 will become famous soon enough
(Thread Starter)
So it does appear that the leak is coming from above the tranny. Would the problem be with the heater core itself or with the lines that connect to the core? In the past when I have replaced heater cores, it has been because of a puddle on the floor boards, why would it be leaking outside but not in?
reepicheep_85 is offline  
#10 (permalink) Old 06-18-2007, 12:22 AM
5th Gear Member
 
Join Date: May 2004
Location: NC
Posts: 1,118
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Starmavin is a jewel in the rough Starmavin is a jewel in the rough Starmavin is a jewel in the rough Starmavin is a jewel in the rough
It could be leaking from the hose and running down the firewall. Or it could be worse.
Starmavin is offline  
#11 (permalink) Old 06-18-2007, 11:27 AM
n00b
 
Join Date: May 2007
Posts: 21
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
reepicheep_85 will become famous soon enough reepicheep_85 will become famous soon enough
(Thread Starter)
I pulled the dash apart last night and got to the heater core. It is definetly leaking and it looks like there is a drain hose that lets all of the coolant that has leaked out of the core itself drain through the floorboard. I'm hoping that is the problem since I just spent an entire day tearing that damn thing apart.
reepicheep_85 is offline  
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E36)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Coolant Leak PhatCat 3-Series (E21, E30) 5 09-19-2006 10:48 AM
97 540ia, Coolant leak, but cant find the source! ///Matt 5-Series (E12,E28, E34, E39, E60) 7 11-08-2005 11:25 AM
1997 328i Coolant Leak and Maintenance Larry Horne 3-Series (E36) 4 10-15-2005 07:45 PM
Coolant Leak From Sensor? BMW-ATI 3-Series (E36) 7 06-23-2005 07:41 AM
Problem with the Coolant Leak RedBeemer95 3-Series (E36) 3 07-23-2004 02:53 PM

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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome