Another question from the uneducated :(

[2 rocks]

Hey all
Now I was googling something completely different the other day, when somehow I stumbled over a thread regarding LPG and water - well the cooling system anyway.

Which led me to the realisation that I had no idea that LPG and the cooling system/water had anything whatsoever to do with each other. Bee Utey had replied to the poster with some info on tapping into the heater hose for "something".

This had me wondering about the issue I'm trying to resolve. I have no heater, well not entirely true, when the engine warms up, I get warm-ish air through the vents, but I can't get heat or cool air - the heat/cool selector slides but does nothing.

After looking at the side of the A/C-heater-box and following what I think is the heater tap cable, it runs from the heater towards the front of the engine, then back to the firewall ending up zip tied there and connected to nothing.

So, is the heater control disconnected for some reason because of the LPG's requirements and if so, how would I restore function to the heater?

If not...how do I get to the back of the heater controls so I can (hopefully) reconnect it to the temp control lever?

Thanks in advance
Mike

[bee utey]

A LPG system needs a guaranteed supply of heat from the circulating engine coolant to reliably evaporate liquid into vapour. (This is the same principle as boiling water to create steam, you need to apply heat. Except LPG boils below zero degrees C so even cool water contains just enough heat to run the process, up to a point.)

As for the heater tap, I have NFI how your heater is connected, and why the heater tap is disconnected. Perhaps you could take a photo and identify what your underbonnet looks like? I mean, you don't even mention what kind of vehicle/engine it is, we're supposed to guess? You could even be missing a functional thermostat for all I know.

[2 rocks]

A LPG system needs a guaranteed supply of heat from the circulating engine coolant to reliably evaporate liquid into vapour. (This is the same principle as boiling water to create steam, you need to apply heat. Except LPG boils below zero degrees C so even cool water contains just enough heat to run the process, up to a point.)

I mean, you don't even mention what kind of vehicle/engine it is.

Sorry mate, I didn't stipulate it is the V8 County... I'll try to get some pics, but it sounds like the heater issue is not associated with LPG and should be discussed elsewhere.

Thanks for the info regarding the system operation though!
Cheers
Mike