Skip to main content
Topic: Ever get water in your trunk for no reason SOLVED (Read 7153 times) previous topic - next topic

Ever get water in your trunk for no reason SOLVED

There is a reason.
The factory assembly welds on the corners of the trunk are either good or not good depending on if you have water

I will clean this up add anti-corrosion compound and silicone Messines up with clear as best I can.

Just thought I would share a few pictures of where this problem is actually at


Ever get water in your trunk for no reason SOLVED

Reply #2
A little dab up here along the top edges of the windows won't hurt either

I'll put a little dot of clear silicone in there

This will prevent water from running behind the window trim on the rear of the car and pick up anymore anticorrosion

Ever get water in your trunk for no reason SOLVED

Reply #3
I just noticed on my sons Thunderbird this welded up area is totally differently designed from the cougar

Ever get water in your trunk for no reason SOLVED

Reply #4
I never thought to say anything about this...figured it was just common knowledge already everyone was already cursing Ford for....but I have the same problem...I didn't want to permanently put sealer or anything on it...so I used to literally smear grease on those flat areas on the 20th, so it could be removed easily. It did work, after all rust was repaired I decided the car would never ever ever EVER see one drop of water on itself, for the rest of my life. I was so aggravated that these cars are so pr0ne to leakage like this. I notice literally cracking in...SOMETHING at the top of the driver's door jamb, above the corner of the weatherstripping. Always wondered what was happening to water slipping inside that tiny crevice. The black XR7 already has tons of seam sealer kinda-sorta-not-so neatly smeared in the trunk corners. No problem, I'll happily leave what has been done before me! LOL.


That car's windshield is not original, and leaks near the rearview mirror a little. So that car never sees rain or a hose either LOL.
1987 20th Anniversary Cougar, 302 "5.0" GT-40 heads (F3ZE '93 Cobra) and TMoss Ported H.O. intake, H.O. camshaft
2.5" Duals, no cats, Flowmaster 40s, Richmond 3.73s w/ Trac-Lok, maxed out Baumann shift kit, 3000 RPM Dirty Dog non-lock TC
Aside from the Mustang crinkle headers, still looks like it's only 150 HP...
1988 Black XR7 Trick Flow top end, Tremec 3550
1988 Black XR7 Procharger P600B intercooled, Edelbrock Performer non-RPM heads, GT40 intake AOD, 13 PSI @5000 RPM. 93 octane

Ever get water in your trunk for no reason SOLVED

Reply #5
I've been fixing that problem on my car since about 1999... Permanently fixed it when I rebuilt my car..
[SIGPIC][/SIGPIC]
***** Project "EVOLUTION" 1987 Cougar LS  & 1985 Cougar Convertible *****
[/COLOR]
5.0 HO 306 roller block, machined GT-40P heads, Wiseco dished forged pistons, Eagle forged floating I-beam connecting rods, Lunati pushrods, ARP bolts, Scorpion aluminum 1.6 rockers, Comp Cams Magnum 266HR, Explorer intake, 65mm TB, MAF Conversion, 19# injectors, Ford Racing stainless P-headers, 2-1/2" cat-less exhaust w/ Flowtech Afterburner lers , SC AOD with 2800 BDR torque converter, 3.73 T-Lok rear, CHE rear control arms, full 2-1/2" frame w/1" jacking rails & seat supports, Rear disk brakes, Turbine wheels, All original interior w/ floor shift upgrade .......
Pretty much every panel on my 87 is new, rebuilt, or re constructed. :D
Join us on Facebook

Ever get water in your trunk for no reason SOLVED

Reply #6
Quote from: ZondaC12;401979
I never thought to say anything about this...figured it was just common knowledge already everyone was already cursing Ford for....but I have the same problem... I decided the car would never ever ever EVER see one drop of water on itself, for the rest of my life.

 
How will you wash it then?.... ;)
[SIGPIC][/SIGPIC]
***** Project "EVOLUTION" 1987 Cougar LS  & 1985 Cougar Convertible *****
[/COLOR]
5.0 HO 306 roller block, machined GT-40P heads, Wiseco dished forged pistons, Eagle forged floating I-beam connecting rods, Lunati pushrods, ARP bolts, Scorpion aluminum 1.6 rockers, Comp Cams Magnum 266HR, Explorer intake, 65mm TB, MAF Conversion, 19# injectors, Ford Racing stainless P-headers, 2-1/2" cat-less exhaust w/ Flowtech Afterburner lers , SC AOD with 2800 BDR torque converter, 3.73 T-Lok rear, CHE rear control arms, full 2-1/2" frame w/1" jacking rails & seat supports, Rear disk brakes, Turbine wheels, All original interior w/ floor shift upgrade .......
Pretty much every panel on my 87 is new, rebuilt, or re constructed. :D
Join us on Facebook

Ever get water in your trunk for no reason SOLVED

Reply #7
anyone with a bird here may not even know what we are talking about, the seam is designed differently,,, such that it appears like someone at ford said "oh yeah, we need to use this engineered seam for the trunks on birds, those cougars are going to have issues in a couple years but we can fix the birds so they dont have this problem"

glad im not the only one who has this problem.

if you dont know if you have this issue or not, lift up  your turnk seal and inspect.
i added clear silicone and that should stop this issue for many years i would think.

I honestly believe this is the root cause for rusting out of the lower rear qtr panel just to the rear of your rear tires down low.

if you look at the path the water would have to take and puddle  up, its obvious

Ever get water in your trunk for no reason SOLVED

Reply #8
you guys may have missed this post, this is exclusive to the passanger side only.....

daminic~ did you remember this mod or remember / notice to fix this ford error?

http://www.foxtbirdcougarforums.com/showthread.php?31787-where-the-water-flows-Rear-Fender-Well-Mod&highlight=fender+well

Ever get water in your trunk for no reason SOLVED

Reply #9
Quote
I've been fixing that problem on my car since about 1999...

And I since 1987 LOL.

Rubberized undercoating from the underside helps quite a bit. Silicone's good from the top side (clear, so you don't have to paint). That should be about all that's needed to stop it.

Ever get water in your trunk for no reason SOLVED

Reply #10
See T-birds are better ;).
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

Ever get water in your trunk for no reason SOLVED

Reply #11
No, it's just that T-Birds have a different way to attach the structure at those points. You have other problems due to the rear window slope (rusting at the bottom corners of the window trim, for starters) so each car had a unique solution.

My first '84 was 3 years old in 1987 and I remember getting a few drips in the trunk underneath those seams. The service manager at the Ford dealership recommended the undercoating trick and that solved the issue completely. The car was never wrecked either, so there was nothing to break the seam. It was likely just the original body seam sealer that shrank from temperature cycles.

Ever get water in your trunk for no reason SOLVED

Reply #12
Quote from: EricCoolCats;402003
No, it's just that T-Birds have a different way to attach the structure at those points.

No, T-Birds are just better :p :hick:

[SIZE="1"]Except those beautiful convertibles. I just don't like the rear window.[/SIZE]
1988 Thunderbird Sport

Ever get water in your trunk for no reason SOLVED

Reply #13
You know what's awesome?

(What's that, Eric?)

Being able to buy new headlights for my car, at any time I wish. :P

Ever get water in your trunk for no reason SOLVED

Reply #14
Quote from: EricCoolCats;402015
You know what's awesome?

(What's that, Eric?)

Being able to buy new headlights for my car, at any time I wish. :P

So can anyone else, for a price (only because people sit on new parts, like I've started doing :p ). There's always a NOS set out there somewhere, even if it takes a long time to find that box hiding away in some warehouse or attic.

I doubt we'll ever get standard sized headlight housings again. Add in the fact that society throws everything away now, people don't see the need to design things with long-term viability in mind.

The earlier T-Birds could do the same thing, so that isn't a benefit of the Cougar.

Now if only Ford would being back a REAL Thunderbird of some type. The latest T-Birds and Cougars were just upsetting.
1988 Thunderbird Sport