water on passenger side floor board

100

Asked by Apr 16, 2013 at 09:10 PM about the 2003 Toyota Tacoma Prerunner Crew Cab SB

Question type: Maintenance & Repair

started to notice water on passenger side floor board, not running hot heat comes on and works well ac
still cold im stumped about what this can be. can anyone give some assistance to where can i start
diagnosing?

9 Answers

102,755

Water on the floor could come from bad door weather striping. It could come from a plugged sunroof drain hose. It could come down the firewall from a dry weather seal in the cowl. It come from rust holes in the fire wall.

9 of 9 people found this helpful.
102,755

My '96 Alero had the leaking cowl and it took a couple years to find it. The water ran down the firewall behind the carpet. It would rain and a puddle formed on the drivers side floor. --- I drilled a hole through the carpet and floor to drain it.

4 of 4 people found this helpful.
100

after taking a closer look it seems to be leaking out of the floor air vents because my drivers foot just got wet. also saw water dripping from underneath glove box area. would this problem occur with no rain outside because its been dry for a week now.

10 of 10 people found this helpful.
102,755

That would be your HVAC heater core drain. There's a rubber hose low and centered on the firewall behind the engine. They sometimes plug up. -- If it smells sweet like coolant, it could be a heater core leak.

5 of 5 people found this helpful.
100

Thanks for an insight on the situation,ill take a closer look @ it to see what i can find.

875

I would bet money it is your heater core.

3 of 3 people found this helpful.

find the drain hole and blast some compressed air from a mechanic's air blaster~

1 of 1 people found this helpful.
60

If your not a mancanic how else could e access water leakage on passenger side does it come fro using the ac

6 of 6 people found this helpful.
30

Same problem with my 2005. pulled back the front carpet and discovered the drain hose from A/C was pulled out of the rubber grommet where it goes through the floor board. Condensation was running under the front carpet and seat and collecting in rear passenger side. Hose could come out with powerful suction when cleaning carpet. Added duct tape to prevent reoccurrence. Easy test would be to run A/C and see whether or not the condensation is dripping on the pavement under the car.

1 of 1 people found this helpful.

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