A/C Evaporator and Heater Core Issues (Help please!)

[CR50HC]

My CRX has some issues. I noticed some pooling liquid on my passenger side floor board the other day. I suspected the heater core so, as a temporary fix, I bypassed it. I drove to Montgomery Alabama today (280 mile round trip) and saw pooling again. I stopped at a gas station to get some paper towels to soak some of the liquid up. I then got back on the road and it started pooling up again. This leads me to think that it may be the A/c evaporator. Is there anything I can do to test my theory? The Chilton manual is very vauge. I can't afford a Helms manual so, if anyone has step by step directions on how to get this figured out, I'd sure appreciate it.

[TheSilentChamber]

well is it water or is it antifreeze?

[CR50HC]

Well, as far as I know I don't beleive it's antifreeze. It seemed kinda dirty in color. Could have been liquid mixed with 16 years of dirt and dust??? My radiator was completely full when I bypassed my heater core and it still is full. I'm not sure is that means much since the heater core probably had it's own supply of liquid. I do know that I don't see any water dripping from under the car when the A/C is running. Could this be both the core and evaporator? Any other ideas?

[TheSilentChamber]

Its probably going to be your evaporator sence its in the summer and I dont think you've been using your heater. You can allways taiste it, antifreeze taiste sweet.

[CR50HC]

Guess you're right. I may try the taste test. Either way, it looks like a lot of work to replace either unit.

[Hybrid1990crx]

sounds like you have a clogged drain line. the evap naturally sweats and has a drain line towards the bottom of the fire wall on the passenger side. if it gets clogged its gonna do that. corvettes are known to have this problem.

[CR50HC]

Would you mind benig more specific with the location of that drain line? I'd really like to check it first.

[Hybrid1990crx]

how about you just go look for a line coming out of the fire wall towards the bottom on the passenger side, or maybe you could search some for an exact location.

[V-K]

In my sedan the drain line was just below the fuel filter on the passenger side, obviously closer to the bottom of the vehicle. It's not very big, kinda like a flimsy plastic hose, maybe like heatshrink tubing?

[anthony90si]

so i guess the evaporator is located behind the dash?

[V-K]

Under the dash. If you look just under the glove box, there is a black box with little metal clips holding the edges together. It's inside there.

[CR50HC]

Found it. It appears the drain tube somehow got disconnected from the Evap box... I had to quit working on it for the night so, I'll have to test it tomorrow.