Recently replaced the small water pump in the front trunk. Test drive one, coolant on the garage floor, so went back and pulled the floor carpet. The foam under it was soaked also so removed everything and dried it all out, there was some green in this fluid. Test drive two heater on, returned to the garage. Liquid on the floor but was just water, clear liquid, and not slippery between the fingers. Appears to be leaking from the drain under the HVAC unit ..... where it also drained green when the pump failed. Cleaned everything off, no obvious leak from the car. Test drive three was 30 miles ( others 10-15 ) STOP button depressed, returned and everything dry as a bone .... No liquid anywhere. Test drive four, heater on and after parking water (clear) on the floor again. Puddle was 6-8 in across. The heater was on high. I check under the car on occasion, oil, antifreeze/coolant, brake/clutch fluid would not evaporate and it still on your floor after a few hours. I will assume this condensation/dripping liquid is normal ? And happens when either the AC/heater is on ? Or thinking this may also be something affected by outside temp ?
I think it's normal. I investigated this on my car recently and concluded the liquid was coming from the drain under the climate control evaporator. It started out green from dried coolant being mixed with water prior to exiting the drain. Later it turned to clear water once the old dried coolant was washed away. I think the old dried coolant was just left over from a prior leak or repair in the "big black box" that I dared not disassemble.
