yes the A/C kicks on with my a flex-a-lite 185 which works amazing and blowsAlso... Do you have electric fans? Do they kick on with your A/C?
What would cause that to happen?Sounds like it purged the refrigerant- likely pressures in the system getting to high
Should I buy this https://lmr.com/item/LRS-6888747/Mustang-A-C-Manifold-Service-Attachment-Charging-Port-79-93 as well or just a new pressure relief valve?Pressure relief valve on top of the compressor likely let go.
The little cylinder with the white cap on the manfold above. Service pressure is 450psi before that lets go. Im pretty sure it's one time use, so you'll need to replace it.
Likely popped due to overcharging. Either too much refrigerant, or too much oil. Really need a set of manifold guages to se the high and low side pressure on a HOT day to see where you are at.
What does the orifice tube do?My 86 has all OEM parts plus an R134a conversion.
The conversion included:
2x new [screw on] adaptors for the charge ports
A conversion oil that is compatible with both, R12 and R134a
Getting the systems sucked down, new oil added, and service to 80% with R134a.
Still blowing cold some 15/20 years later.
At some point, I recall swapping the orifice tube but I [think] that was part of a repair that I did prior to converting to R134.
I got.the same fan for 18 years now and it works great. I did replace the motor on it about ten years ago.yes the A/C kicks on with my a flex-a-lite 185 which works amazing and blows
3,300 CFM of air.
Direct-fit Black Magic Xtreme Electric Fan for 1979-1993 Ford Mustang
This is a direct-fit, bolt-on Flex-A-Lite electric fan for the 1979-1993 Ford Mustang. It features a 15-inch electric fan with an injection-molded fan shroud.flex-a-lite.com
What does the orifice tube do?
How much was the motor? I might just buy a spare backup, too.I got.the same fan for 18 years now and it works great. I did replace the motor on it about ten years ago.
What does the orifice tube do?
Should I buy this https://lmr.com/item/LRS-6888747/Mustang-A-C-Manifold-Service-Attachment-Charging-Port-79-93 as well or just a new pressure relief valve?
https://lmr.com/item/LRS-6888748/Mustang-A-C-Manifold-Service-Pressure-Release-Valve
And this ?
Why would happen if the clutch cycling switch was faulty or shorting out ?The orifice is what creates the system pressure drop that gives the AC it's ability to cool. You have hot high pressure upstream of the orifice. Passing through the orifice acts as a restrictor, so the pressure in the system drops immediately after flowing through. That pressure drop creates a cooling effect so your "low" side is now cold.
An orifice that is too open creates less pressure drop, and less of as cooling effect. Meanwhile one that is too small creates a restriction as your high side pressure builds up way too much and pops the pressure relief.
I would just replace what you need, unless the O-rings on the other manifold are not the new green units. Would have to track down the correct o-rings, or just buy a new manifold depending on cost.
As for the clutch switch, these are adjustable. There is a screw inside the connector to turn the pressure down fromR12's 25psi to around 20-21psi needed for R-134a
Don't remember but I'm sure its gone up a bunch.How much was the motor? I might just buy a spare backup, too.
Why would happen if the clutch cycling switch was faulty or shorting out ?
did you ever fix your A/C ?I Just had this same thing happen to my 85 GT. The system is still R-12. I've had the car since 2007 and the a/c has never worked. Had a bunch of a/c hoses, the evaporator (yes, that evaporator) and the condenser replaced late last year. Today it was hot enough to turn the a/c on, which was the first time since the work last year, Ran fine for about a mile, then poof, saw and heard the refrigerant come out from underneath the hood. I just can't catch a break.
where did you buy the replacement motor and how much?I got.the same fan for 18 years now and it works great. I did replace the motor on it about ten years ago.
Fitment NoteThe compressor won't engage at all. It's a low pressure cutoff switch.
Fitment Note
If the factory accumulator and compressor hose is utilized, this service port does not have the same half-moon shape inside. To correctly utilize this new service port, you must purchase a new A/C Accumulator & Compressor Hose.
would not having the proper acumulator cause
A/C Manifold Service Attachment w/ Charging Port to pop????
Should I just buy this kit and get it installed and charged up?No. That half-moon feature just allows the hose to rotate a little so when you tighten it down, it needs to be clocked in the right orientation.
The little half-moon feature just locked this feature in place. Without it you can spin it up or down slightly before you tighten the fitting up. Once tight it doesn't move
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