Thread: Sealing up leaky windoshield?

I have been pretty lucky with leaks, since I bought this car off a well versed owner. But I'm on the lookout for leaks every Fall since moving out to NW. Finally this year I sprung one under the pass dash. Luckily it is dripping mostly onto my Tsuru rubber floor mat. I'm thinking its the lower windshield seal or possibly the cowling.

there's a fix for that somewhere on alldata that has pictures to go with the following words.

Classification: BF94-024
Section: Body & Frame
Reference: TECHNICAL BULLETIN NTB94-086
Models: 1990-93 Sentra
Date: August 24, 1994


SENTRA COWL WATER LEAK

APPLIED MODEL:
All 1990-93 Sentra models built before 12/92

SERVICE INFORMATION

If a customer complains of a passenger side water leak which puddles below the glove box or heater box, use the following instructions to install a cover over the fresh air intake plenum inside the cowl.

SERVICE PROCEDURE

1. Remove the passenger side wiper arm.

2. Remove the rubber welt from the forward edge of the passenger side plastic cowl by pinching the white clips from below and pushing up.

3. Open the passenger front door and remove the Phillips screw at the the base of the "A" pillar (under the weatherstrip). Remove the two Phillips screws from each side of the passenger side wiper pivot. Lift off the passenger side cover while unseating the two barbed inserts (one is hidden and the other is in the recessed hole in the cover).

4. Trim one tab off the metal cowl cover as shown. Seal edge with paint.

5. Temporarily fit the metal cowl cover in place and drill two holes using the two tab holes by the windshield as locators. Start the sheetmetal screws then remove the cover and clean all metal chips from the area.

6. Put a bead of silicone based sealant along all mating surfaces.

7. Reinstall the metal cowl cover, and attach with two sheet metal screws.

8. Remove the large foam tape from the underside of the plastic cowl cover shown.

9. Remove the three plastic alignment tabs as shown above.

10. Reinstall the black plastic cowl cover making sure to align the clips from step # 3.

11. Reinstall the three screws into the cover.

12. Replace the third and fourth clips from the passenger side of the cowl cover and rubber welt with the two longer white clips and replace the fifth clip with the black clip as shown. Reinstall rubber welt.

13. Reinstall wiper arm.

Nice grab man. A TSB huh? Thanks.