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I have reviewed the TSBs for this model and there are two describing your condition. One specifically states the drivers side, the other the passenger. However - water runs....so I would check both.
On the first one, the rain may run down and leak past the foam at the firewall. But again, I would check both.
Another way to check this would be to have someone take a water hose while someone is inside the vehicle and have them allow the water to run across the closed hood area near the hinge area near the windshield. Look for the water running in.
I would then open the hood and run it down the firewall.
If still nothing then on the windshield...........
I have put both TSBs at the end of this post.
Last, it looks like you may have some recalls on your vehicle. The dealer may fix these for free. Please contact the dealer service department, give them the VIN number of your car and have them check on these to see if they apply to you.
Recall - Vehicle Emission Control Label Incorrect
Recall - A/T Cooler Line Replacement
Recall 01V011001: Transaxle Oil Cooler Hose Defect
Recall - Loose Steering Pinion Gear Lock Nut
Recall 00V225001: Possible Steering Defect
Recall - Column Switches for Lights/Wiper
Recall 99V333001: Battery Cable Harness Problem
Recall 99V305001: Steering Column Switch Levers Defect
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A/C - Evaporator Drain Tube Water Leaks to Interior
DATE: August, 2002
A/C WATER LEAKAGE AT EVAPORATOR DRAIN TUBE OPENING
Customers may complain of A/C water leakage onto the driver side floor. The leakage may be more noticeable after the air conditioner or front defogger has been operated.
This condition may be caused by drain tube blockage, or the heater unit not being properly sealed to the bulkhead. The bulkhead silencer pad may be positioned between the evaporator foam pad and the firewall, causing an improper seal. This could cause the evaporator drain tube foam to become deformed and allow water to drain onto the floor.
To eliminate this condition, first check for drain tube blockage. If no blockage is found, install a new evaporator foam pad as described in this bulletin. Also, inspect the heater assembly for cracks or other damage that could cause leakage. If cracks or other damage are observed, replace the heater assembly.
1999-2002 Galants built before 9/21/01
1. Remove the carpet from the driver side floor, to access the drain tube opening.
2. Inspect the drain tube for blockage (clogging). Clear any blockage found. If no blockage is found, go to Step 3.
3. Remove the heater assembly. Refer to Group 55 in the appropriate service manual for removal instructions.
a. Remove the evaporator foam pad. Inspect the drain tube on the heater assembly for cracks or other damage that could create leakage. If cracks or other damage are observed, replace the heater assembly.
b. Replace the evaporator foam pad (listed in the PARTS INFORMATION section of this bulletin).
4. Inspect the evaporator drain opening at the bulkhead to confirm that the silencer pad does not interfere with the drain tube opening.
a. If necessary, trim the silencer pad to eliminate any interference with the drain tube opening. The silencer pad should be fitted as shown.
5. Reinstall the heater assembly.
A/C - Water Leaks to The Interior
DATE: September, 2004
MODEL: See below
BLOWER MOTOR HOUSING FILTER
This TSB supercedes TSB-03-55-008REV, to update the affected vehicles and warranty information. New information is indicated by a shaded triangle or an arrow.
Debris (such as leaves, etc.) entering the front cowl area may clog the evaporator housing drain tube. If this occurs, the evaporator housing may fill up with condensation and overflow into the passenger compartment, and into the blower motor through the cooling tube. To eliminate this condition, clean the debris from the tube and the case, then install a blower motor housing filter as described in this bulletin.
On Lancer models produced before 9/25/02, also install special wiper pivot caps onto the wiper pivot shafts as described in TSB-03-51-001.
--> Refer to TSB-04-55-007 for Endeavor and 2004 Galant repair procedures for HVAC drain blockage.
2000-2004 Eclipse, Eclipse Spyder
1. Confirm proper blower motor operation.
2. Clean debris from the evaporator housing drain tube and evaporator case.
3. On Eclipse, Eclipse Spyder and 1999-2003 Galant models only: Refer to TSB-01-55-002 for filter installation procedures.
4. Remove the glove box lid.
5. Install a blower motor housing filter (listed in the PARTS INFORMATION section of this bulletin) a follows:
a. Use a knife to cut a section from the top of the blower motor housing, along the perforated lines as shown.
b. Install the filter with the air flow directional arrow pointing down.
c. On Lancer and Outlander models only: Secure the filter with two 5X14 self-lapping screws.
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Friday, January 2nd, 2009 AT 9:03 PM