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-   -   How to Fix a Leak in a 1999 - 2004 Mustang Vert (

clarehills 02-06-2009 05:48 PM

How to Fix a Leak in a 1999 - 2004 Mustang Vert
Hey Folks,
I have 2000 For Mustang V6 Convertible and for a long time I was not able to have it out in the rain due to a leak that I could not find the source of. Finally I tracked down the location and have come up with a fix that I have tested and can now confirm that it works.

Before I go on, I just read some recent posts in this section with the title "Mustang Convertible Leaks" and the members in there seem to have found the exact same leaks as I (based on the descriptions they gave) so I think this is a really common issue - I also agree with the assessment by gdoc89 that the holes are caused by wear - it looks to be a point at which the material folds when lowered. Also I wanted to give a big thanks to 'undecided.steve' who was good enough to write me a huge email about where he thought the issue in his vert was located - turns out my issue was different though.

Anyway - on with the description!

After rain or washing your car, the area behind the back seat has a puddle of water - ever hear a sloshing sound when driving around a corner? - Thats what is causing it. In very heavy rain dampness may also be found on the floor behind the front seats in the back seat foot wells and also in the trunk closest to the passenger compartment.

On either side of the back window, in the bottom corners, one or two wear holes will be present that allow the water to enter from the outside when it is present. The holes are difficult to locate (This is difficult to describe without pictures so have a look at the attached images as you are reading this) -

From the outside- Stand beside the car in front of one of the back wheels, facing the car. If you look at the rear glass you will notice there is a fold of material between you and the glass, slip your hand into it and slide your fingers down into the corner nearest you - feel around and you will find a small how about the size of a pea, possibly larger - that is the culprit. Look at the images below for a shot of where your hand should be.

This is where your hand should be:

This is where the hole is located if you were able to see it from the outside

From the inside- Climb into the back seat facing the back of the car, on one side of the well behind the back seat rest (where the top goes when it is down), pull the curtain/headliner that is attached to the rear corner of the interior of the inside to one side, feel along the fold of material in the interior of the canvas top and you should find the hole in this location. Look the following images for a shot of where the hole I found was.

Here I am pointing at the location of the hole

In the center of this image you can see some frayed material - that is a side view of the hole

A better picture of the hole

The Fix:
The good news is that there is a cheap and easy way to fix these holes. In the other thread that I mentioned, antiv6 suggested a patch product that looks like it would work really well - if I could go back I would probably just buy that and use it. I fixed it by using stuff in a tube called VLP (see pictures of it attached) - I got it in ACE hardware for around $5 I think - can't quite remember now. I used the VLP and strips of vinyl that I cut off an old computer bag to patch the holes on the inside and the outside (just to be sure). Sticking the patch on the outside was easy because the fold of the top naturally presses the patch into the shape of the top and holds it in place until it is dry. The inside was more difficult however and I used two small pieces of wood top hold the patch over the hole and the attached large spring clips to apply pressure on the pieces of wood. Make sure you dont move the top or expose it to rain for at least 24 hours to let the glue cure. If you don't have an old cavas bag that you can cut up for patches just try to get some flexible material that matches your top as closely as possible - also make sure to use plenty of the glue - I did not spare it.

VLP glue

The size of the patches I used, My hand is there for scale reference

This is the shape that the patch will have when inserted under the flap over the hole

The Results:
I made the fix a couple of weeks ago and have washed the car and driven in rain to see if the fix worked and so far it works great - I even put up and down the top a load of times to make sure that the glue stretches with the top and does not separate - again - it is holding just fine.

Feel free to PM me for any details I may have left out or to clarify how to do the fix.
Hopefully this will help someone else fix their leaky top - enjoy!

S197GT07 02-07-2009 09:09 AM

Awesome post!
I will say my dad has a 98 vert and has the exact same problem. It did take us a while to find the holes as well, but our fix was a little different then yours haha. We tryed patching the holes but didnt have much luck, so we ran plastic tubes from the holes to under the car, so once the water comes in it just goes right back out!

Come spring if the tubes dont hold up I will def be getting some of that VLP glue you were talking about, thanks!

clarehills 02-08-2009 01:12 PM

Wow - that is a really good idea! - Props to you for an simpler solution :)

S197GT07 02-08-2009 01:55 PM

Haha thanks, we'll see if it lasts through this summer though. It was a PITA getting the tubes to run down all nice and what not, but hope it holds up :D

Mully24 02-08-2009 02:26 PM

hats off to you! I tried this out on just one side of my car and so far it seems to be working. Tomrrow I am going to do the other side. Did you have leaks on both sides or just one?

S197GT07 02-08-2009 06:04 PM

For my dads car the holes were on both sides. Because the holes are caused by the top going up and down alot I would assume it would always happen on both sides, unless for some odd reason one side was getting more wear then the other, haha. Good luck with the fix!

clarehills 02-09-2009 10:33 AM

Yep - I had it on both sides as well - both holes were about the same size - I am amazed this did not turn into a recall - perhaps it took too long to manifest itself...

S197GT07 02-09-2009 09:46 PM

Yea thats probally why. I mean my dad got his brand new in 98, drives it about 9,000 miles a year, and it started about 2 years ago; so there is def no way Ford could of realized this to fix it. I am glad however that you found a good solution, as did we. We went to this guy who apperently knew where the holes were, and wanted $600 to replace the back window! Thus our tube idea started, haha.

solman 02-19-2009 10:28 PM

Great write up. I had holes on both sides in the same place. I made a very similar patch but used 3m super weatherstriping adheisive instead. So far I have no more leaks but I havent put the top down since I patched it.

DraKhen99 06-16-2009 10:41 AM

I probably lower and raise my top an average of 3-4 times per day (days when I drive the car, anyway), so I'm sure that's what caused it ... Mine appears to be in the bottom corners of the rear window though, since that's where the water looks like it's coming from.

I read through your directions for fixing the leaks, and I have a question: It seems like you have the top up when you apply the glue, but when you're letting it cure, do you have the top down? And do you do the inside and outside of the vinyl at the same time, or do you do one in one day, and the other the next day?



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