How the heating pipework works behind the dash

[anonymous-user]

I've replaced a faulty blower and it works great. However, the middle pipe (that feeds the left dash vent) blows nothing - never has. Odd as it comes out of the large black air distribution box and I can't imagine how it would be completely blocked?

[anonymous-user]

Update - the pipe in question actually just goes through a hole straight into the wing of the car. Baffled as to how it could ever have done anything?

Basically you have the black plastic box that houses the heat exchanger and the foorwell air vent - the draws air in from the fan in the wing - and this has a pipe coming out that feeds to the passenger air vent. Hot air - all good.

Then you have the midle air vent (left of the stereo) and that pipe simply goes through a big hole in the wing. So it has no chance of ever blowing hot air as it bypasses the heat exchanger totally.

Why on earth would TVR had left vent hot, middle cold, and right cold.?

[Loubaruch]

Fresh air vents!

The old series Land-Rovers have something much simpler, two lifting panels direct on the bulkhead.

[anonymous-user]

Yeah, my research has yielded:

Left = blown, hot / cold, fresh or recycled
Middle = fresh. Cold only pushed from wing cavity when driving
Right = cold only, blown, fresh.

Typical TVR. The middle one, really? What's the point? Why not just feed from the left one lol?