The condensate drain at the bottom of the plenum is blocked. It can become blocked from different causes but the fix is the same in most cases. Stick a wire up the drain tube to clear it. You'll probably need to put your car on a lift to see where the drain is.
Some AC installations have a drain tube or tubes that connect to the drain at the bottom of the condenser and carry the condensate water through the floor pan. You will find this on older vehicles with condenser units slung under the dash. The tubes can become kinked or fall off the unit.
One way to troubleshoot this problem is (hey, the floor is already wet) to pour water through a dash vent and see where it runs out. If the water leaks out a joint, you probably have a clogged drain. If it leaks through a crack in the plenum you'll need to dry everything out and patch the crack with JBWeld or a similar product.
After you locate the leak, take out the carpets and padding and dry it all so your floor pans don't start rusting.
There is no cabin air filter for a 1999 ford ranger xlt
If the water is leaking out underneath the cab onto the ground, this is normal if the air conditioner has been, or is being, used. It's just condensation that builds up in the system draining out. If the water is leaking inside the cab onto the passenger floor, it could be a few things. Compare patterns of air conditioner use to weather and water exposures from washing or sprinklers to indicate the source of the leak. It is likely that it is, again, condensation from the air conditioner, however, this is not normal and can create problems such as mold growth, foul smells, and rusting. What's happened is that the drain for that condensation to the outside has become plugged, so the water builds up and leaks inside. This problem should be addressed, unfortunately, I'm not aware of any reliable DIY remedies beyond dismantling the heater coil/evaporator coil housing and clearing the blockage. (A fairly big, time consuming job, which may best be left to professionals such as a radiator shop or your mechanic.) Alternatively, clear water could also be coming in from a leaking door or windshield seal. Also alternatively, if the liquid is engine coolant, it indicates a leaking heater coil, and needs to be repaired immediately.
maybe the heater core.
Do you have the recycle air button turned off? If you do you would be sucking in hot air when you are moving but when you stop the outside air stops flowing into the air conditioner and it gets a chance to get cooler air from inside the cab and cool it more. Make sure your recycle button is lit on the dash. This closes off the outside air and just recycles the cooler air from inside the cab.
what you're thinking of is the cabin air filter, which filters the recirculating air in the cab of a vehicle. this is different from the engine air filter, which filters the air flowing into the intake manifold for the motor.
they are circuit breakers that reset themselves when you shut off the key and they are in the roof of the cab. i was having issues with mine and it was the air conditioner relay thats bolted on the wall behind the motor.
R134 is used, but have the leak fixed first.
Probably not. In most vehicles the only 'water' inside the cab is from the heater core. It's mostly likely that your heater core has a leak. The heater core is near the gas pedal on these vans. If the leak is on the right side it could be ac condensation water running back in from either a plugged drain, or it could run back through the firewall from an improperly sealed drain tube. The drain tube is behind the alternator and about half way down. It is hard to see and access.
Any exhaust smell in a car cab indicates an exhaust leak somewhere along the line. Th reason you don't smell it while driving is because the air flowing air under the car is blowing the exhaust gasses away before it can rise into the cab. After the car sits for a while, the gasses seep out of the leak, and up into the cab.
It can be a vacuum problem. Check to see if there is vacuum going into the cab. Check for a pinched hose or one that is soft and collapsed.
my truck leaked as well. I had to take it back several times. It was a bad bead in the front of the cab. they had to do a water test on the truck to find it.
your heater core has got a leak and needs to be replaced