Page 2 of 2 FirstFirst 12
Results 11 to 16 of 16

Thread: Front subframe holding water (future rust/corrosion problem area)

  1. #11
    Senior Member stevedmc's Avatar
    Join Date
    Dec 2015
    Location
    Baton Rouge
    Country
    United States
    Posts
    329
    Thanks
    5
    Thanked 81 Times in 55 Posts
    Quote Originally Posted by daleWV View Post
    Could it have been water draining out of the A/C drain hose? It hangs down right in the vicinity of that corner of the subframe as you described. My subframe has holes in the bottom that look they would pretty much preclude much accumulation. I replaced the subframe on my sons Mirage after he bent it running the car into a ditch the winter before last and neither his or the used subframe I bought had any accumulation of anything in them.
    Ditto. The A.C. drain hose is the first thing I thought about when I read the original post. It's normal for water to drip from the front passenger side if you use the A.C.



  2. #12
    Senior Member Mitz's Avatar
    Join Date
    Jun 2015
    Location
    Cavite
    Country
    Philippines
    Posts
    305
    Thanks
    25
    Thanked 166 Times in 109 Posts
    Yes .. it's coming from the A/C. I have this hose extension put long time ago.

    Name:  Aircon Hose Extension.jpg
Views: 135
Size:  83.4 KB

  3. The Following User Says Thank You to Mitz For This Useful Post:

    MightyMirageMpg (10-17-2018)

  4. #13
    Senior Member MightyMirageMpg's Avatar
    Join Date
    Apr 2016
    Location
    wi
    Country
    United States
    Posts
    696
    Thanks
    387
    Thanked 270 Times in 171 Posts
    No its too cold here for a/c
    It was raining really heavily the day before tho

    I like that mitz thanks fot posting going to do that too

  5. #14
    Junior Member
    Join Date
    Jul 2016
    Location
    Ohio
    Country
    United States
    Posts
    7
    Thanks
    0
    Thanked 4 Times in 2 Posts

    Subframe rust out

    Quote Originally Posted by MightyMirageMpg View Post
    Anyone else notice the front subframe holds a little water inside it?

    Wondering if anyone has done anything about this or has a suggestion? Are the 2015/2017 subs differ3nt?
    One fix, if you're keeping the car for years, is to first clean it (pressure wash) then dry, even using a heat gun to be sure no moisture is hiding in frame.
    Next spray in any permanent lubricant/sealer you can find, like undercoating, Fluid Film, etc. After this step, fill all cavities with spray foam, the expanding type. Make sure you see it squirt out all openings.
    When that sets, trim excess, and paint over it.
    The lubricant will prevent rust, the foam will keep water out, and as a bonus feature, will add sound deadening

  6. #15
    Moderator Eggman's Avatar
    Join Date
    Sep 2015
    Location
    Cleveland, Ohio ☼
    Country
    United States
    Posts
    4,844
    Thanks
    2,807
    Thanked 1,240 Times in 925 Posts
    The expanding foam is an interesting idea
    Have you tried it before? I wonder how this treatment holds up long term.

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage ES 1.2 manual: 50.1 mpg (US) ... 21.3 km/L ... 4.7 L/100 km ... 60.1 mpg (Imp)


  7. #16
    Junior Member
    Join Date
    Jul 2016
    Location
    Ohio
    Country
    United States
    Posts
    7
    Thanks
    0
    Thanked 4 Times in 2 Posts
    Quote Originally Posted by Eggman View Post
    The expanding foam is an interesting idea
    Have you tried it before? I wonder how this treatment holds up long term.
    Yep, it works great, as long as you don't get into a repair, like accident damage. All that foam has to burn off or be cut away before you can weld

    I first used it 30 years ago on a rusted out Masda wagon, mostly to stop air flow in winter.
    And on that dreaded front member on my '93 Metro.

    As long as it is not exposed to direct sun for long periods of time it will hold up for years.
    Sun will slowly turn the surface to powder, but that takes years.



Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •