Wet floors after it rains

Don A has an excellent answer, but if you have a sunroof, that is more likely the reason. The pipe runs down between the door pillar and the windshield and there is often a join there which can part. Be careful with compressed air as it can blow joints apart.

Water puddling on passenger side?

Nissan Forum https://www.nissanforums.com > threads > water-pudd...
Dec 19, 2004 - Hi, I have a 94 sentra xe and lately ALOT of water is on the floor on the passenger side. The sides and under the door are not wet, where ...

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My 2022 Nissan Sentra is leaking water into the front

JustAnswer https://www.justanswer.com > Nissan Repair
May 28, 2023 - I noticed water leakage about 1 month after I purchased the car. It had rained and there was puddle on the carpet and weather mat on the front ...

1 answer · Top answer: Hello and welcome to JustAnswer! Thank you for choosing us to answer your

So you're saying you replaced the heater core because water was puddling on the driver's side, but water is still puddling on the driver's side? I'm assuming you're in the US and the driver's side is on the left and the heater core is on the right side.
Do you get much rain where you live? Is the vehicle parked outside? Do you notice the puddling more often after a rain? If this is the case, your water intrusion may be because of a leaking seal around the windshield or door. Check by getting the floor reasonably dry, and then have someone sit inside while another floods your car with a garden hose - specifically the windshield and driver's door. Have the inside observer try to catch a stream of water along the edge of the windshield, along the door jam, or along the door sill.

Rusted out footwell? Pull carpet and see where water is getting thru.

Seems that when going thru puddles the engine sucked water causing engine damage

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.

You forgot to add WIND to your experiment! Poured water is not driven water and sometiomes the pressure and VACUUM of the moving vehicle is the problem. As you drive a vacuum is created around any area not directly exposed to the airflow. This can "pull-up" seals that are tight when you are still, and also there is a possiblity that the water came from underneath your car!!

I would say you have either a bad seal on the windshield or the seal on the passenger door opening.

If you have a wet seat then it is likely defective weather stripping around the window.

Try this. If the floor is dry, then it rains and the floor remains dry, only gets wet after a drive in the rain or on wet streets, you may have a hole somewhere.

Check for holes from missing rubber grommets or holes in the floorboard or firewall from rust. Check for any rust holes or missing rubber grommets under the car or on the firewall, anywhere water can splash up into the vehicle from driving in rain or running through puddles..

Check wet spots along the carpeting all the way up under the dash, if the wet spot is higher than the floor itself, you could be getting the water from splashing through puddles.

Any holes under the car or in the fenderwell even up on the firewall can cause this problem.

First check for any obvious signs of rust, if none are found then look for missing or defective rubber grommets.

A/C drain pipe blocked with old leaves and dead flies the outlet is on the passenger side of vehicle lift bonnet and look a lower of firewall for a rubber pipe with a **** in the end and squeeze it and shake it