Notices
2005-2009 Mustang S197 Discussion & News

Anti-freeze Always Low

Old 2/1/19, 02:47 PM
  #1  
Member
Thread Starter
 
Join Date: September 30, 2018
Posts: 19
Received 4 Likes on 4 Posts
Anti-freeze Always Low

I noticed over the past couple of months that my anti-freeze is always low, about 3" under the minimum line but doesn't go any lower. I can always smell it outside of my car but i can't find a leak. I think it might be the heater core from want I've read but can't say for sure. Has any one experienced an issue like this or have any idea of what might be wrong? Also my windows where fogging up on the inside to the point where I'd have to wipe it off with a towel. I hasn't happened for a little while, not sure if that's a symptom of a bad heat core.
Dan12z is offline  
Old 2/1/19, 02:54 PM
  #2  
Shelby GT350 Member
 
wanted33's Avatar
 
Join Date: February 26, 2012
Location: Down south in Dixie
Posts: 2,021
Received 156 Likes on 140 Posts
Could be the heater core. Can you feel any dampness in the floor board near the core. Also, check the water pump. You could have a small leak around the shaft. I always hated little stuff like that, they're quite hard to track down. Good luck.
wanted33 is offline  
The following users liked this post:
Dan12z (2/1/19)
Old 2/1/19, 05:34 PM
  #3  
Member
Thread Starter
 
Join Date: September 30, 2018
Posts: 19
Received 4 Likes on 4 Posts
There is but it's winter it could just be water, there's no smell. I'll take a look at the pump in the morning.
Dan12z is offline  
The following users liked this post:
wanted33 (2/2/19)
Old 2/2/19, 05:12 AM
  #4  
Cobra R Member
 
Paris MkVI's Avatar
 
Join Date: August 18, 2004
Location: Virginia
Posts: 1,951
Likes: 0
Received 17 Likes on 16 Posts
Some of the heater supply/return hoses run through the intake manifold on the 4.6L V8's. Just had to have mine replaced. But certainly the heater core and/or water pump can be the culprit(s).
Paris MkVI is offline  
The following users liked this post:
Dan12z (2/2/19)
Old 2/2/19, 08:34 AM
  #5  
Member
Thread Starter
 
Join Date: September 30, 2018
Posts: 19
Received 4 Likes on 4 Posts
There's a good chance it's the coolant housing, their made of plastic and held together with glue, seems to be the most common issue when you lose coolant and can't find a leak. On the next warmish day I'll check all of my hoses, pump and housing and update my thread. Thanks for all of the help.
Dan12z is offline  
The following users liked this post:
wanted33 (2/2/19)
Old 2/3/19, 02:32 AM
  #6  
Shelby GT350 Member
 
mrkabc's Avatar
 
Join Date: November 13, 2005
Posts: 2,138
Received 14 Likes on 10 Posts
Originally Posted by Dan12z View Post
There's a good chance it's the coolant housing, their made of plastic and held together with glue, seems to be the most common issue when you lose coolant and can't find a leak. On the next warmish day I'll check all of my hoses, pump and housing and update my thread. Thanks for all of the help.
Dan, do you have a V6? If so, check the thermostat housing. They are made from sheet metal and are known to rust away, especially over 100k miles.
mrkabc is offline  
The following users liked this post:
Dan12z (2/3/19)
Old 2/3/19, 08:17 AM
  #7  
Member
Thread Starter
 
Join Date: September 30, 2018
Posts: 19
Received 4 Likes on 4 Posts
Yes, I'll take a look. I'm at 92000mi.

Last edited by Dan12z; 2/3/19 at 04:28 PM.
Dan12z is offline  
Old 2/3/19, 04:29 PM
  #8  
Member
Thread Starter
 
Join Date: September 30, 2018
Posts: 19
Received 4 Likes on 4 Posts
Here is a pic of my thermostat housing. I couldn't really see coolant leaking but it seems like there's something going on around the glue seal.


Dan12z is offline  
Old 2/4/19, 08:07 PM
  #9  
Shelby GT350 Member
 
Cavero's Avatar
 
Join Date: February 13, 2006
Posts: 2,255
Received 46 Likes on 44 Posts
It's hard to tell, there's definitely something crusty there by that seam, but water will also tend to collect there, and it looks like you've been doing some winter driving, so the crusties might just be dried salt. You could start the car cold and start smelling right in that area as the car warms to see if it's coming from there. You could also take it to a shop to get the cooling system pressure tested.
Cavero is offline  
The following users liked this post:
Dan12z (2/5/19)
Old 2/5/19, 05:25 AM
  #10  
Member
Thread Starter
 
Join Date: September 30, 2018
Posts: 19
Received 4 Likes on 4 Posts
I'll make an appointment to have it tested.
Dan12z is offline  
Old 2/5/19, 08:18 AM
  #11  
Member
Thread Starter
 
Join Date: September 30, 2018
Posts: 19
Received 4 Likes on 4 Posts
I was just out and checked with the engine running. There's definitely neon green fluid dripping out, it seems to be a slow leak; I'll going ahead and order a new housing. I'm sure it will only get worse over time. Thanks for all of the help. Now it's time to call my insurance company and try to get my rear bumper fixed, a plow banged it a pretty good a couple days ago.



Dan12z is offline  
Old 2/5/19, 04:33 PM
  #12  
V6 Member
 
lenko's Avatar
 
Join Date: February 24, 2006
Posts: 54
Likes: 0
Received 5 Likes on 3 Posts
There are some hoses/pipes under the intake manifold (valley) that run to the back and they may be leaking under there.
lenko is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dennycarlton
V6 Performance Mods
5
1/10/09 08:06 PM
jeffgall
Warranty and Service Issues
9
3/15/08 08:03 AM
clintoris
Warranty and Service Issues
5
6/8/07 02:19 PM
Faber
2005-2009 Mustang
10
5/2/05 10:19 PM
Lalo
Off-Topic Chatter
17
9/2/04 10:20 PM


Thread Tools
Search this Thread
Quick Reply: Anti-freeze Always Low


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.