strange A/C valve?
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As soon as I take the plastic cover cap off of the high pressure valve there is a hiss of escaping air. The low pressure valve when removed there is no hiss. My understanding is these are merely dust caps and are not suppose to prevent freon from escaping, the valve itself is suppose to do this. On the other hand, this valve is not a schrader valve but a type I am unfamiliar with, so I am not sure what is 'normal'.
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It is the same valve as on my 98, and it shouldn't be leaking. I don't think that it is a serviceable part.
If it's not been replaced for a long time it's simpler just to replace the receiver/dryer (not hideously expensive) and get a system evac/recharge done. Do get it professionally drained as R134 isn't particularly environmentally friendly, and there could still be a lot of pressure left.
I've just replaced the condenser & dryer on mine. I mentioned oil to the tech who did the evac/recharge and he said he would add some depending on how much refrigerant was extracted? Presume that is OK as it's been blowing super-cool since the job was done.
HTH,
Mike
If it's not been replaced for a long time it's simpler just to replace the receiver/dryer (not hideously expensive) and get a system evac/recharge done. Do get it professionally drained as R134 isn't particularly environmentally friendly, and there could still be a lot of pressure left.
I've just replaced the condenser & dryer on mine. I mentioned oil to the tech who did the evac/recharge and he said he would add some depending on how much refrigerant was extracted? Presume that is OK as it's been blowing super-cool since the job was done.
HTH,
Mike
#5
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Remove (recover) refrigerant from the system, unscrew the service valve.
Take the old valve to a well stocked auto supply store and match the valve. Ford uses these valves so it is not some strange part.
Install new valve, evacuate and recharge system.
I do this at least a few times a month in the Summer.
I buy the low and high side valves in boxes of 5. I go through many a year. Four Seasons or FJC brand valves are what I use.
The Jaguar Dealer can get them also.
bob
Take the old valve to a well stocked auto supply store and match the valve. Ford uses these valves so it is not some strange part.
Install new valve, evacuate and recharge system.
I do this at least a few times a month in the Summer.
I buy the low and high side valves in boxes of 5. I go through many a year. Four Seasons or FJC brand valves are what I use.
The Jaguar Dealer can get them also.
bob
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The part in your picture is TWO PARTS!!!!!!!!!
The TOP part of the unit you have is the valve (that needs replacement). The bottom STEEL part is the adapter.
You need to SEPARATE the top aluminum part from the STEEL lower part and install the service valve back onto the steel lower part.
You took the entire part off and you only need the top part that the refrigerant service hose connector attaches to.
You will need to use pliers or something to separate the valve from the adapter and be careful to not scar-up the new aluminum service valve when re-installing the part to the steel lower adapter.
bob
The TOP part of the unit you have is the valve (that needs replacement). The bottom STEEL part is the adapter.
You need to SEPARATE the top aluminum part from the STEEL lower part and install the service valve back onto the steel lower part.
You took the entire part off and you only need the top part that the refrigerant service hose connector attaches to.
You will need to use pliers or something to separate the valve from the adapter and be careful to not scar-up the new aluminum service valve when re-installing the part to the steel lower adapter.
bob
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greenforest56 (08-31-2017)
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