Water water everywhere

[HHV8]

I need your collective help again please, I took the chim out today, lovely weather etc etc. However with the roof down decided to put the heat on. Omg with the fan running suddenly had water coming out of the passenger heater vent under dashboard. A few minutes later the heater was running cold. Checked the coolant levels and discovered that this was very low, topped up and started the car. Heater ran ok and up to temp. However with the fan running I now have a torrent of water flowing out of the heater vent in the foot well.
Clearly there is a dramatic problem.
But where from and how do I get access ?
When I turned the car off I could hear a hissing sound from under the dash.
Any ideas............

[constablergt]

Does not sound good!


It does sound like that it could be the heater matrix that has sprung a leak possibly frozen if the anti freeze in the coolant is no good. It could also be one of the two pipes that feed the matrix come loose see picture bellow.

If you have Air con could be a easy fix there are drain pipes in the passenger foot well that drain off the air box that could be blocked.


Picture from the passenger seat carpet removed.

Edited by constablergt on Monday 3rd January 11:47

[HHV8]

Thanks for the information, I guessed that it was going to be a real pain.
Ok so now the investigation will start, the car was coming off the road at the end of Jan for a few bits of renovation works, clearly this will now start a little earlier than planned.
Thanks for your help