Hi there -
If someone can help. (Maybe an ignorant question)
We've had our car a week. Gas was fitted about 2 months ago before we had acquired it.
It blows pure cold air when on top hot on when the dial pointed to max. red..
How can I do some trouble-shooting to find out where something maybe amiss - that could be basic?
Thanks guys for any help..
Cheers,
Deborah

hey mate

could be that were they have fitted the gas conveter heater hose

they are placed under the thermostat and this restricst the flow of coolant to the heater core
a good idea is to change the thermostat and drill out the little ball thing on the side

I'd also check the vacuum line to the heater valve, if they were rough when they were mucking around in there its possible they knocked the line off.

I had this problem in my AU, didnt fit gas though, turns out theres a cable that runs from the heater knob down behind the glove box, it sorta clips into this plastic lever that controls the vents. As you turn the knob to hot it pulls the plastic lever in which opens the hot vents, as you turn to cold it pushes the lever away which closes the hot vents. Just check behind your glove box (squeeze sides of glove box in to pull glove box right down) and check for a black cable with metal comming out of the end, this metal is threaded allowing it to clip and/or screw into the lever. Look at this as your adjusting your hot/cold knob and see if it pushes/pulls the lever, if not, then thats the problem... hope this helps.

not knocking you because your right for a low series car, but a fairlane will have electronic activation for it all.
A good place to start is to check to see if the car is full of coolant. Next, do as frank suggested, (the knocking out the nibble piece in the hole and drilling an extra hole was an "in service upgrade" for AUII cars anyway,
failing that, im sure someone here can tell u how to run the self test on the climate control system which will check all the electronic side of things...

No the vacuum line to the heater tap is only required to shut it, ie cold air.
If the hose was off, then the heater would be on.

Sound like they might have bypassed the heater when connecting the convertor up to the heater hoses. The convertor should be connected to the heater hoses using 'T' Pieces and before the heater tap.

Check and make sure it been done properly.

Well we have the Air con not to max for heater to work and seems we get a bit of warmth after 15 mins driving... so we will work on twiddling knobs next drive. I wish there was a pic somewhere on the net of the dashboard or similiar.... I did a search to no avail till.. I searched for forums.
I'd like to thank you for your quick input though and I'm still listening.
First year and a half with Fords - excuse my mentioning but I've only been around Holdens most of my life and then Toyotas and Nissans.. Grin... sorry to use "swear" "car" words around you guys!.. Cheers, Deborah