Hi Bigfellah
I've not yet resolved this yet, but I intend to have the vehicle checked out by my local Honda approved car repairer after Xmas.
Despite recent rain there has not been any further noticeable water ingress in the driver's floorpan. Since I used the wet dry hoover to suck up the wet area last week, the area has got progressively dryer. I still intend to have it looked at soon though as I don't want rust or any electrical problems as the damp area is not far below the cabin fuse box area and presumably the ECU .
I'm still monitoring it daily.
I think the water came over/through the firewall from the windscreen cowl due to a blockage. Also the seal between the bottom of the windscreen and the engine cowl looks a bit dodgy to me as there is a small gap along the centre quarter of its length of approx 3mm which could swallow up water. I think heat from the hot sun this summer could have distorted the black plastic causing misalignment. I temporarily covered this with black electrical tape.
So we shall see
Honda: The Power of Dreams
(Their dreams, not mine, I don't know what substance their marketing people were snorting!)
- I'm dreaming of a dry papap!
Sorry Bing Crosby!