If there are any leaks into the vehicle from outside, the carpets should be wet and since it smells, it should be a rather bad eak. Since you are not able to find anything under the carpets, the only other place water can accumulate within the vehicle would be the A/C evaporator housing.
There is a drain hose at the firewall for draining the evaporator condensaton water. Ensure it is not clogged.
Sunday, March 4th, 2012 AT 8:36 PM