Highlander in Yorkshire
Active Member
I wasn’t getting any heat out of the drivers window vent, nothing at all. A quick check and I could feel hot air coming from underneath the lower dash. Removed the parcel tray etc and took off the lower dash. It was so rotten (especially the corner near the hole for the heat exchanger) that no air was making it the full length of the lower dash. Figured I would never want air to my feet so.....
rebuilt the square hole that mates with the heat exchanger (old metal, some rivets and some araldite). This worked really well and we then had a good mating structure for the exchanger. I laid a bit of 40mm waste pipe in the dash and basically filled the rest with expanding foam; air destined for the drivers side had to go through the pipe; all other routes were blocked by the foam. The only problem now was that all the hot air basically blasted straight out of the passenger vent. So, a home made flap valve inside some more waste pipe (slightly oval wooden ‘flap’, connected to a wooden dowel, operated by a radiator knob). The line on the knob represents where the oval flap valve is. Bit gash looking I know but did the trick. I’ll tart it up when I’ve fixed more pressing stuff.
rebuilt the square hole that mates with the heat exchanger (old metal, some rivets and some araldite). This worked really well and we then had a good mating structure for the exchanger. I laid a bit of 40mm waste pipe in the dash and basically filled the rest with expanding foam; air destined for the drivers side had to go through the pipe; all other routes were blocked by the foam. The only problem now was that all the hot air basically blasted straight out of the passenger vent. So, a home made flap valve inside some more waste pipe (slightly oval wooden ‘flap’, connected to a wooden dowel, operated by a radiator knob). The line on the knob represents where the oval flap valve is. Bit gash looking I know but did the trick. I’ll tart it up when I’ve fixed more pressing stuff.