I can hear like water swishing around in my dash between thr firewall and in the dash what can it be????

SOURCE: i hear a swishing water sound under my dash what

the ac drain is clogged. you need a compressor with a air nozzle blow it in the drain to loosen the problem. the drain os usally on the fire wall. look at where the wet spot was in the summer on the ground it will be someplace above the spot

SOURCE: can hear water swishing in the rear of my crx delsol

Remove the spare tier and you should see a plastic drain plud in the floor pan that you can remove,worse comes to worse drill your own hole[make sure you not going to come out somewhere where it will do damage like fuel tank or brake line wireharness ect].

SOURCE: When it rains i can

there is a drain for rain water and the A/C. put it up on a lift and run a long pipe cleaner in and out of it. they get plugged and this will not be a new procedure to the shop where you take it. you could do this at the same place that changes your oil as they will be under it anyway.

SOURCE: I hear water swishing around in my grand prix

sounds like it could be around the air conditioner coil. The drain is probably stopped up.