Water leaking in passenger rear seat
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Junior Member

Joined: Oct 2023
Posts: 55
Likes: 1
From: TN
Car: 1986 Blue Iroc Z TTop
Engine: 305 LG4
Transmission: 5speed
Water leaking in passenger rear seat
Ok so I have a 1986 TTop Iroc Z. I had water leaking in the rear seat. I replaced both rear hinges, hinge gaskets, hinge bolts, and new rear hatch seal. Also, I made sure the hatch is adjusted perfect. The hatch motor does not work for the auto pull down. I noticed today I still have water spots in the rear seat from recent rains. Can anyone guide me on where to look next? I plan on replacing the t top seals as well. Appreciate any help.
Joined: Oct 2001
Posts: 12,217
Likes: 1,141
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Water leaking in passenger rear seat
You really need to pull the trim and headliner and have someone run a garden hose over ttops and hatch hinge to body area.
the hinge to body needs a sealant around the bolts and between the washers/spacers or water leaks down in there.
The ttops can cause water back there if the sealants have gone bad. Its not always the seals.
the hinge to body needs a sealant around the bolts and between the washers/spacers or water leaks down in there.
The ttops can cause water back there if the sealants have gone bad. Its not always the seals.
Joined: Aug 1999
Posts: 5,261
Likes: 461
From: RI
Car: 1984 Camaro Berlinetta
Engine: LT1
Transmission: T56 6-speed
Axle/Gears: 4.11 LS1 Rear End
Re: Water leaking in passenger rear seat
Maybe - Just Maybe --------> Check the screws that were used to install the rear headliner trim panel.
These screws should be VERY short. I once had a car where the previous owner installed screws that were too long and put holes in the roof. The holes he made were "hidden" in the channel under the hatch glass,...only found them after removing the headliner screws and seeing how long they were.
Just 1 more place your leak *MIGHT* be coming from !

These screws should be VERY short. I once had a car where the previous owner installed screws that were too long and put holes in the roof. The holes he made were "hidden" in the channel under the hatch glass,...only found them after removing the headliner screws and seeing how long they were.
Just 1 more place your leak *MIGHT* be coming from !

Joined: Nov 2010
Posts: 5,892
Likes: 84
From: Mantua NJ
Car: 1 Owner 1986 TA with a WS6 package
Engine: 5.0 EFI
Transmission: THM700R4
Axle/Gears: 277 Posi Speedo
Re: Water leaking in passenger rear seat
When I had water on my back floor passenger side ,it was my T Top leaking.
Thread Starter
Junior Member

Joined: Oct 2023
Posts: 55
Likes: 1
From: TN
Car: 1986 Blue Iroc Z TTop
Engine: 305 LG4
Transmission: 5speed
Re: Water leaking in passenger rear seat
Wanted to give an update. I pulled the ttop seals out and discovered two rust holes in the channel. That is where my water was coming from. I patched the wholes and will be installing new ttop seals this weekend.
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