Water every were!!

I just bought a 92 PA, great car, but it had a weird smell to it. I found the floor was wet in the front on both sides but mostly on the passenger side. But, its not coolant, it’s from the AC box under the dash. Has anyone had this problem? And is there an easy fix?

And the 2nd leak is in the trunk, the spare tire spot was filled with water and I can't find were that’s coming from either. Any suggestions?

Thanks

Your A/C blower housing drain must be clogged, causing the leak into your passenger compartment. The water in your trunk must be the trunk weather strip leaking, try using a water hose to help diagnose this problem.

I've been going through the leaky A/C problem myself recently with my '02 Park Avenue. Same wet areas. The water flow comes down under the right front footwell carpet and then flows into the right rear. Pull the right front carpet up and if it's sopping wet underneath, it'll confirm my thoughts. Grab the carpet at the top and pull it downward as far as you can so that you can reach your hand back behind it and reach down to the floor area to feel for the water.

On the A/C, most cars usually have a plugged up drain tube. I've had this happen before myself. People usually blow out the tube or ram something into it to clear the obstruction, often an algae slim. In this forum, one fellow mentioned sucking it clear with a shop vacuum and that's the best way I've ever heard because, with that method, the obstruction exits the system and isn't just pushed back into the evaporator housing. I tried all 3 on my P/A, none worked.

As I discovered, GM has built quite a poorly designed evaporator housing for this car. The lower evaporator housing doesn't have a built-in drain tube or an opening at the bottom of housing for the condensate water to simply pour out of, straight down and out. Nope, they cleverly designed a "horizontal hole" in the lower housing that fits flush with the inside firewall opening to the exterior. And, they cleverly packed simple foam rubber around the housing to keep the A/C water from seeping back in. The drain hole is supposed to have a rubber extension on it, but it could still leak around the firewall opening back into the car because of the manner in which the tube they sold me simply attaches to the housing rather then into the hole itself. This is what happened to my P/A - the water was dribbling out of the horizontal hole, in the black plastic housing, then down and seeping back into the car via bad foam rubber seals.

I had to make my own drain tube, L-shaped, to push into the hole to be sure the water drained out "away" from the firewall. I used 3-M (yellow) adhesive on the tube for a pliable cement to hold it in their drain-hole although it did fit snugly. I further shoved foam rubber down around the housing opening from the outside and this isn't easy to do with the lack of clearance space in that area.

Btw, I used towels shoved under the front carpet and a wet vac to dry out the mess.

On the trunk water, I've seen deteriorated trunk lid rubber seals cause water entry. With the trunk closed, spray a lot of water around the trunk, like a heavy rain. Then opened the trunk and you'll see fresh water around the inside of the gasket, on the floor, etc. to confirm this possibility. If so, replacing that big, long rubber lid gasket should fix it. Another poster in this forum said something about a rubber plug possibly leaking too - this being caused by road water being forced up around it into the trunk.

Best 'o luck -
Mike

Thanks ya'll for the info, Mike thanks for all the info. I will try your way to fix the AC box and the trunk. How hard was the AC box to get to? Through the dashboard or from outside? Thanks again.

Texman,

All of the tube clearing, adding, etc. is done from the outside, underneath. I had to vitually find the hole by feel due to the obstructions. Be sure the exhaust is cool so that you won't get burned like I did on that nasty, unshielded, catalytic converter, which heats up fast.

On my '02 P/A, GM has installed several black plastic covers around the evaporator case. The one behind and under the glove box somewhat blocks the view, but was easily removed. There is a rectangular, tapered "downspout" on the bottom of the case, about 3" high, 2 1/2" wide, up against the (inside) firewall. This is the backside of the drain. The front (exterior) side is round, about 1 1/2" diameter, with the (approx.) 1/2" drain hole in the middle.

Hope this helps -
M

Thanks again, I plan on working on it this weekend. I will let you know how it goes.

Casey