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Re: Rainwater pooling inside front passenger floor. How...
Make sure there is no obstruction ( leaves/debris ) in the drain channels located under the wiper cowling. Has the windshield ever been replaced? If so, it may not be properly sealed.
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Rainwater body leaks can be a nightmare to locate and I have many times needed to remove seats and carpets and lay inside with a flashlight while an assistant played a hose on various parts of the outside...
You could be luckier.
Water usually doesn't run uphill but a leak can travel quite a distance along body seams or behind trim or under carpets before manifesting in a pool - often a significant pool of water in a footwell can amount to only a couple of drips each minute and not a flood so patience is needed...
Apart from such obvious sources as sunroof drains, roof aerial attachment, failing windscreen bonding, one of the most common causes is blocked heater air intake drains. Much of my time servicing vehicles has been spent removing dead leaves from the heater intakes before they cause trouble...
Normally caused by
Moon roof drains clogged.
Windshield Joints
Perished Grommets in the firewall.
Holes in the floor pan.
Air intake vents between windshield and hood.
If the car has a rear heater, maybe the matrix is leaking...
If the car has a sliding sunroof it might be a displaced drain causing the problem. Such sunroofs can store a significant amount of rainwater in the gutters unless the car is perfectly level.
Is it only when it rains or when you have the ac on? I had one that the ac condensation drip line plugged up and it would soak the front passenger side floor.
I had this same problem on a '92. Get the carpet out even if you have to cut it out and dry the car with a space heater or blow dryer. Cover with a canvas to keep water out. Get under the car and look for holes in the floor or firewall allowing rainwater in. You may need to do as I did and remove the hood, left front fender, wipers, and louvered wiper panel, to look for holes. Use a garden hose to find leak. I found 3 rust holes in the firewall, using a strong flashlight and mirror to see hidden areas. I patched with metal patches, silicone, and roofing tar.
it may not be rain water ..if its in the right front floor board ..check for leaks in and around the heater core or the hoses that supply the the heater core with water [coolant] ..also keep a close eye on the amount of water [coolant] that is in your radiator..if its coming up low each time you have checked it ..its almost a sure bet that is where your water [coolant ] is being lost..or going [into your floor board] so your thinking it rainwater..
GM cars used to be notorious for leaking rain water in around the edge of the front windshield. There is also a rainwater drainage system on the front, generally where the wipers are located and the drain hole on the bottom of that can become clogged.
I suspect that water is pooling in the cowl area (in front of the windshield). Since it's at an angle, the water can't drain out the usual drain. This is also where the air is drawn in for the heat/a/c. I think that the water that collects is flowing in through the climate control system and coming out the floor vent. If you want to test it, jam some paper towels up in the floor vents and recirculating air intake and see if they get wet. If you just want to solve the problem, try backing into the space.
are you losing water in the rad ??if not and you think A/C outlet pipe is clean and water run away from inside firewall well .Then put hose on it and look inside car to trace fault
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