Water in drivers side footwell...

[Ambo]

Have a 2019 GT and found the above problem! Once I started searching, it was clearly a well documented fault!

I replaced the 'cloth/tape' type covers over the hole in the A post with a rubber grommet epoxy resined in (and did the passenger side).

Then noticed water coming in between the bottom of the door card and door frame, so door cards removed and the plastic film was found to be, well not very well stuck! All film is now Tiger sealed back on!

But, water was still getting in somewhere...

This is the bit I hadn't seen documented and therefore it's about time I put something back in to help! I think it's the same fault that some have had dashes etc removed by Ford to repair!

There is a grommet high up above the accelerator pedal that needed sorting. It's accessable from the engine bay by removing the wiper arms, scuttle panel and then peeling back the sound insulation...

The seam sealant was stopping it properly seat. Removed it and trimmed the sealant back, then epoxy resined the grommet back in. It's sat outside in the fine Bristish summer for a fortnight and remains dry...success!

Few photos and thanks to all that have helped me!

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[MarkM]

There are also large holes covered by stickers that are painted over on the body where the door hinges are, I found one on the ground and searched where it came from. I fitted grommets to fill them properly but others have had water ingress from there too

 

[Ambo]

These boys...

 

[Snakebyte]

These boys...

Yep. Your sticker is gone...in fact, based on the witness mark, the sticker was never adequately placed. And that potentially started the failure mode.

 

[MarkM]

These boys...

Exactly those

 

[V8_MOTOR]

The grommet up top was a common issue in 2017 mustangs. Mine had it, Ford sorted under warranty. Not had any other issues as of yet but car is now always parked under shelter, washed like twice a year and never driven in the rain.

A useful thread for when this problems become apparent! I need to take the door cards off and swap out speakers!

 

[Kristian87]

Ooh flashbacks reading through this one!

That was me that had the whole interior out, and wiring loom replaced under warranty. Great to have the photos as a reference, I've always been 99.9% sure that my issue was sorted, but having extra bits to check is always a good thing

 

[Ambo]

Kristian, I did wonder about tacking this onto your thread, but thought it might be best to do a seperate one and easier for people to find it...

I plan to check all areas of the carpet for damp every 12 months!

 

[Ambo]

The grommet up top was a common issue in 2017 mustangs. Mine had it, Ford sorted under warranty. Not had any other issues as of yet but car is now always parked under shelter, washed like twice a year and never driven in the rain.

A useful thread for when this problems become apparent! I need to take the door cards off and swap out speakers!

Be interesting what state the speakers are in! Noticed that the backs of them and I think the window motors are behind the waterproof membrane...

 

[V8_MOTOR]

Be interesting what state the speakers are in! Noticed that the backs of them and I think the window motors are behind the waterproof membrane...

Thats common. There should be no issues. I just want to upgrade mine. That's all.

 

[FMJ]

Yeah the plugs for the window motors fill with water too. Then the short slowly burns out the control unit circuit board. Then your window starts only working intermittently. Drying it out and cleaning the contacts doesn’t fix it as the board has shorted.

If they designed the plug better this wouldn’t happen. I replaced my motor unit, filled the plug with electrical grease then encased the plug/connector in an upturned thick plastic zip lock bag that I sealed with sealant so water runs off of it and not into it…. Messy solution but it works and no one can see it.

 

[ARAMP1]

Where are these holes in the firewall? Looks like to the outside of the brake booster? Trying to look at the mirror image since mine is a LHD.

Left her out in a pretty bad storm and the driver side front and rear has wet carpet.

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