Specific to a 99 Wrangler Sport with AC, 4.0. But probably carryover to other years and models....
All the things I addressed to finally get it stopped, some likely not the problem, but all were potentially issues and I am sure there was a combo assault, as I got the leaking from one area to stop, but not until I addressed the last issue has it (so far) stopped altogether...
Items needed / used (other than tools): FlexSeal in the spray can, and any basic general purpose adhesive in a tube. The adhesive is used as a caulking material....
1. Add a hose to your AC drain vent, which is currently just a short stub poking out of firewall under on the passenger side. The theory was in some conditions rain, or surface water, could blow back up into it, or wind could push the condensate back in.
The following issues address the foam insulation material around these parts and areas, which on a 1999 jeep is worn, brittle, and flaking away....
2. Flex seal the entire area where the AC tubing enters the cab from the firewall. That is foam and has likely pulled away from the tubing.
3. The cabin air intake is located under the plate between windshield and hood. It is raised, so water normally won't enter it unless the area is full of leaves and debris (which it may be). However, 3 screws hold down the plastic housing, and there is a gap between it, and the "funnel" into the ventilation system. It is filled with the foam, most likely crumbling, so put the adhesive in, or otherwise caulk up the gap.
4. Remove the battery, and look under it to the fan motor housing. It sits in a little concave area with, again, some foam insulation around it. Flex seal the area.
If you look at my past postings, and probably elsewhere on this forum, you can find a step by step to removing the cover plate between hood and windshield....
All the things I addressed to finally get it stopped, some likely not the problem, but all were potentially issues and I am sure there was a combo assault, as I got the leaking from one area to stop, but not until I addressed the last issue has it (so far) stopped altogether...
Items needed / used (other than tools): FlexSeal in the spray can, and any basic general purpose adhesive in a tube. The adhesive is used as a caulking material....
1. Add a hose to your AC drain vent, which is currently just a short stub poking out of firewall under on the passenger side. The theory was in some conditions rain, or surface water, could blow back up into it, or wind could push the condensate back in.
The following issues address the foam insulation material around these parts and areas, which on a 1999 jeep is worn, brittle, and flaking away....
2. Flex seal the entire area where the AC tubing enters the cab from the firewall. That is foam and has likely pulled away from the tubing.
3. The cabin air intake is located under the plate between windshield and hood. It is raised, so water normally won't enter it unless the area is full of leaves and debris (which it may be). However, 3 screws hold down the plastic housing, and there is a gap between it, and the "funnel" into the ventilation system. It is filled with the foam, most likely crumbling, so put the adhesive in, or otherwise caulk up the gap.
4. Remove the battery, and look under it to the fan motor housing. It sits in a little concave area with, again, some foam insulation around it. Flex seal the area.
If you look at my past postings, and probably elsewhere on this forum, you can find a step by step to removing the cover plate between hood and windshield....