When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I noticed this afternoon (actually my 3 yr old son noticed it) that the carpet in the passenger footwell was damp. I immediately thought heater core, but further investigation indicated no dampness anywhere but the footwell at the low point. Nothing on the sides or the rear.
I always thought it would leak and run down the back wall, but this is not happening. I can pull the carpet down against the back wall and there is no moisture or evidence of dampness.
Where/how does a heater core typically leak?
We did have 3 inches of rain in 1 hr on Friday night here.
It could be leaking down the firewall without you being able to feel it in the carpet. Are you running anti-freeze? Typically, you will be able to smell it. If you have a wet vac or a shampoo-er you would be able to see the anti-freeze. You might also get a foggy film on the windshield if you run the defrost.
You could always be lucky (if you have A/C, that is) and it be a simple water leak. Not that that's a good thing but changing the HC in my AC car was a pain in the butt.
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2024 C3 of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
Re: Heater core or rain leak? (hudman)
Hudman
Sounds like rain? That usually seems to get in either via the top of the screen, or through the firewall behind the cash. That means it drips about where your foot/ankles would be in you were in the seat with legs partly outstretched. Does that seem about right? As you have convertible, it seems likely, or is that an insult to your top's fit?!
I'd go along with the thought that you's smell the heater core leaking... I could smell the tiny leak in our radiator recently from inside the car, on the move!
I had the same thing happening in my 1972, and discovered it was caused by a slight gap between the rear pillar and door weatheringstripping on the passenger side. Water would flow along the back of the door, drip down onto the metal body sill, and then flow along and dump out in the passenger foot well.