Good morning everyone. Just had my Ford EL re-gased, no problems. Cools to between 11.5C and 14C. The mechanic said i have to replace the heater tap ( No probs there). I told him that i would like to tweek the settings somehow so it comes out freezing. No thermostat in these cars and he said its computer controlled. Is there anyway of adjusting these settings so i can get the min temp possible out of the vents. I will fix the heater tap.
if your heater tap is not leaking and he has weighed the correct amount of gas in the a/c system you should be getting about 6-8deg c out of the vents. which shuold be plenty cold enough.for summer you should also get your radiator fans rewired to run on high when your a/c is on, to safeguard your compressor,and a/c will run cooler. ( if you haven't done so yet )
Thanks XR, i will replace the heater tap. or to save money, i wonder if there is a way of stopping the water before it gets to the heater - just to see if the heater tap is really buggered. if this makes a difference then i will replace the tap - but anyone know of a quick way to stop this ?
just clamp some vice grips over the hose that goes to the heater to stop the flow. if ya want to tweek it colder, on the TX valve underneath there is a little knob turn it in a touch, bout 1/8 of a turn, to change the orifice tension. if ya go too far it will freeze up. if ya get 2 degrees C vent temp with 134A ya doin good.
sorry nightprowler . but mmaher do not try and adjust that knob on the bottom of the tx valve. it will more than likely stuff your tx valve. and you will be up for a new tx valve and a regas .and 2 deg c at the vents is too cold your evaporator will freeze up after an hour or so of using it.i wouldn't go below 4 deg c. on systems where you can adjust the thermostat.
usually the best way to get the lowest temp (provided your heater tap is closing fully and your air-mix door is working correctly) is to recover the gas, replace the reciever-drier and regas the system (correct amount of course)
on a VT we usually aim for about 2c at the centre vents on fan speed 2, recirc, doors and windows shut after performing the above operations.
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your probaly right to not try it if you do not know what you are doing. it is a common thrick though on trucks and machines especially in hot environments and with that shit 134a gas
i find is is better to leave the doors open and the fan on high to work the guts out of the aircon. if it will pull down in these conditions it will perform no probs when used correctly. well thats my opinoin working on earthmoving machines in the middle of the desert.
Thanks guys, you have given me a lot to think about and i appreciate your input. I will slightly tweak the tx valve but make sure it dosen't go below around 5 deg's to be safe, so if it gets to 4 i will turn it off to prevent any freezing.(This should be heaps , i hate summers in brisbane as they can get un-bearable), if i can get it that far. Will clamp the hose and see how this goes.
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