2014 Mustang taking on water and a fix?? - Mustang Evolution

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Old 12-25-2015, 06:39 PM   #1
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2014 Mustang taking on water and a fix??

There is something odd about saying my 'car' is taking on a little water. Sounds like the ominous words of the Captain of the Titanic. Lots of people talking about this issue over time but the obvious seems to be absent.

Issue: After hard rain (driving in rain) my car seems to have water accumulating inside the passenger quarter panel. The sound is like a gallon jug of water half full sloshing. Up until today, I attributed the sound to a loose water bottle under the seat or the gas tank. Well, neither of them are it. Researching this, it appears the seams in the rear passenger wheel well are notorious for not being good. Subsequently, after driving in heavy weather, water is accumulating inside a chamber within the passenger quarter panel. In retrospect, I had the sound (and the water creating it) for four or five days after driving in the rain then it's gone until the next one.

Obvious possible solution: I don't know what the internal structure is within the passenger quarter panel forward of the wheel but there obviously is a near water tight chamber somewhere within the panel. My thinking is drill a 1/4" drain hole. The logic of not drilling a hole there would normally be it may allow moisture in and damage the vehicle. As I know I have water coming in anyway, giving it a place to escape from can't be bad. There is the option of taking it to the dealer but my car is out of warranty, leaving it for ? how long etc may not offset my just drilling a drain hole.

Here's an image I found of what appears to show the internal chamber behind the quarter panel. The area in front of the rear wheel seems like the source of the sound in my car. http://cdn.stangtv.com/files/2011/10/retro-stang-4.jpg

The only issue I see with this plan is that I don't know what the internal structure of the quarter panel is on the passenger side. It may have some baffled area so the accumulating water may not necessarily be at the panel's bottom. I got a Raxion Nav unit for Christmas and will have the car up to install the reverse camera already. Before, I drill to hopefully address my Captain Stubbing issue; anyone have any thoughts on this or my logic before I get into this in the am?
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Old 12-25-2015, 10:36 PM   #2
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Why not just fix the seal of the quarter panel so it's done the correct way and not cause a future rust spot by drilling into the car?
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Old 12-26-2015, 07:46 AM   #3
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From reading in the forum and other places, it seems the welds are where water enters but folks have had some trouble with the dealers even when they see the water. Just had an idea that is either simple and smart or just dumb. I'm thinking just remove the inner wheel well covers to expose the metal. Assuming I don't see a blatant cracks in the seam, hose the area down with bedliner spray. That should seal any points for water to enter. Recover with the inner wheel well pieces and voila. Anyone who hasn't had this problem can only imagine how crazy the sound of a gallon-ish of water sounds like sloshing around there.
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Old 12-26-2015, 10:20 AM   #4
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yeah pretty much get the welds fixed under warranty.. or just don't worry about it. I still have to bring mine in for this issue but I'm lazy.

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Old 12-26-2015, 10:26 AM   #5
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Whatever you do, make sure there enough time for the cavity to dry fully before sealing the seam, as you don't want to trap water inside...maybe park somewhere warm for a day or two?
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Old 12-31-2015, 07:45 AM   #6
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My 14' convertible has the same issue but its on the drivers side. I had it in to the dealer a little over a month ago. They have a "water specialist" that addressed the issue. They claimed it was a poor seal on a weld and that it was resolved. I just got in the car the other day and the sound is back. The strange thing this time is the car sat for a week without any driving. It will be going in to be looked at again in two weeks. unfortunately the "water specialist" is only on site twice a month. The good news is it's covered under warranty. What disturbs me is this issue has been around for several model years and still hasn't been resolved by Ford.
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Old 12-31-2015, 08:05 AM   #7
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Sure it's not in the door?
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Old 12-31-2015, 08:11 AM   #8
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Not in the door. I know because I was proud of myself. Emphasis on 'was'. The day after I made the original post here, I removed the rear seat and rear side panels. The lower seat belt mechanism rests here along with a couple of vent holes drilled high. Using a hand pump and fishing a tube through one of the vent holes to the car interior, I was able to get a tad over a quart out of the passenger quarter panel. (The sloshing was gone on double checking.) I picked up some rubber bed liner spray and after removing the matting inside the rear wheel well, hosed down all the seams. I was so proud of the job I did, if I ever flipped the car I could have a party and serve punch out of that wheel well. Anyway, rain here on Virginia coast past few days... sloshing has returned. %$&%$!
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Old 12-31-2015, 08:29 AM   #9
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If you post the issue on the Ford Service FB page someone will reach out to you within the hour. If you don't want to do that I have been working with this person. Her name is Heather Culp HCULP2@ford.com .
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Old 01-01-2016, 08:35 AM   #10
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Thank Papivo. I did and they were very prompt. Problem with that is I don't want to make arrangements to leave the car for a day or so. But, pulling the rear out of the car again, this is what I found. You can see where the factory seal isn't complete and the where the water is entering. Plan now is off to Lowes to get some exterior sealant and plug this mess up.
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Old 01-01-2016, 09:05 PM   #11
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Quote:
Originally Posted by Hampton CIT View Post
Thank Papivo. I did and they were very prompt. Problem with that is I don't want to make arrangements to leave the car for a day or so. But, pulling the rear out of the car again, this is what I found. You can see where the factory seal isn't complete and the where the water is entering. Plan now is off to Lowes to get some exterior sealant and plug this mess up.

Good luck. Still amazing that this has been an issue for so many years and Ford hasn't resolved it.


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Old 01-01-2016, 09:47 PM   #12
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^ Ford doesn't care as long as people keep buying their cars. Yay corporate greed.
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Old 01-02-2016, 03:14 AM   #13
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Haven't had the issue for "years" as the car is a 2014. Clearly came from the factory that way. Pretty sure I have it fixed; the first rain will tell.
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Old 01-02-2016, 05:55 AM   #14
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Didn't mean you but the mustang in general. Forums show this problem going back to the 06' model year


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Old 01-02-2016, 12:18 PM   #15
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Quote:
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Didn't mean you but the mustang in general. Forums show this problem going back to the 06' model year


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It does seem that 2014 models have more problems with "taking on water" than any other year though. It is like one of the robots that weld our cars had a glitch that wasn't noticed.
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Old 01-02-2016, 03:06 PM   #16
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Sorry pap. I misread. Something fun and odd about explaining that my car is retaining water. Pretty sure I fixed things but I won't know until we have some weather. I filled the gaps with a nice coating of exterior vinyl DAP all over in there. Let that dry then I hosed it over with rubber bedliner spray. "It's fool proof!" (May as well curse myself as I don't see how water can get in now. But there's always Murphy's law.)
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Old 01-02-2016, 09:18 PM   #17
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No problem. Wish you the best. There are worse problems we could have.


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Old 01-03-2016, 12:06 PM   #18
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question since you opened it... is it metal in there or plastic? meaning let's say we let it sit in there for 10 years.. you think it's gonna rust out the quarter panel? I only notice the sound when i jerk forward then stop real quick, and it sloshes. otherwise, stopping short, accelerating, nothing makes me hear it. it's just one simple motion. so im gonna bring it in soon to see if they can fix the weld, but if that doesn't fix it, is the body in danger?

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Old 01-04-2016, 03:38 PM   #19
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Metal in there. I don't think it would be problematic in the short term but over years, I could see it causing trouble. With my car being a 14', I'll likely have it for years.
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