Question about 1999 Toyota Corolla

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Wet floor on driver side only; Prevelant after heavy rain

Carpet along kick panel and fire wall is dry; Carpet along middle console is dry; Carpet along the top of the door frame/rocker panel area is dry. Firewall does not feel wet to the touch in any obvious location; Did find any wet locations along wiring harnesses, etc. - at least not yet. Carpet is saturated in location starting just below the rubber reinforcement pad, extending toward the rear of the vehicle up to the driver seat. Suspect it is collecting here as a "low" spot in the floor pan. I have not yet pulled the carpet back to expose area. Water leak occurs when vehicle is not moving, so I don't suspect it is coming from an underneath seam...????

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  • dcschwer Jun 22, 2009

    Thank you - I will definitely service the evap. drain. However, this problem only occurs during heavy rain and the AC is runnign constantly in the warm weather...?? Thoughts?

  • dcschwer Jun 22, 2009

    Where is the evaporator drain/tube located?

  • dcschwer Jun 25, 2009

    Good suggestion - thanks. NOTE: No sunroof on vehicle. We have replaced the windshield within the last 7 days due to a crack...I know, you're thing...DAH! Cracked windshield was the problem. I son't think so, Windshield wasn't cracked (visibily) until I reinstalled the plastic grate aournd the wipers. I removed this grate to add weatherstripping in obviously missing places, etc. It hasn't rained since the windshield has been repalced, so we'll is possible there was a bad/leaky windshield seal

  • dcschwer Jun 29, 2009

    floor was soaked again after recent downpour and after replacement of windshield. Next step will be to pull carpet back and use a hose on outside of vehicle to see I anything can be isolated....anyone have others thoughts, suggestiosn?



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I had a similar problem, water running off windshield down drain hole only came in when parked with front lower than rear. A hole used to route a wire to engine compartment from driver side through rear of fender allowed water to come in. Remove rear fender liner fastners from left front fender pull liner away without fully removing it and look for hole leading into cabin. Plug it with deaft sealer.
My 2001 had a wire for an alarm system routed through hole, but dealer who sold me car as used felt he could not leave an non factory alrm system in place DUH!

Posted on Jul 11, 2009

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Have your ac evaporator deain cleaned out or checked. Without this working the ac water will collect there.

Posted on Jun 22, 2009

  • toyotech6 Jun 23, 2009

    That is a tough one. A possibility is a malfuntioning sunroof drain. Rain water coming in the cowl area. Look for leaf debris there. Windsheild gasket failing. You could run a water hose over car and look for evidence of leak inside.

  • toyotech6 Jun 30, 2009

    I would run the hose from the roof down the windshield including the top edge of it. The intake for the heater/AC is under the windshield. There are drains in there to funnel water to the ground If dirt gets in there these drains can clog. Try to watch this while watering. It should flow freely out the bottom. Mark



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