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Old 08-18-2003, 09:25 AM   #1
Tupper
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Member#: 31568
Join Date: Jan 2003
Chapter/Region: MWSOC
Location: Hanover Park, IL
Default AC Compressor Question

Does anyone know if the High Pressure swith that is attached to the back corner of the AC compressor is replaceable, or is it part of the compressor??


This switch is starting to stick and the AC will not turn on sometimes. If I jump the two wires it will run fine for a while.



I would rather not have to get a new compressor if this swith is replaceable.


Any help is much appreciated.


Thanks
Dan
2000 SRP 2.5RS
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Old 08-18-2003, 05:14 PM   #2
armand1
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Location: Seattle, WA
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'95 Montego Miata

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Just a silly question, but have you verified that the refrigerant pressure is correct? Isn't that switch meant to not allow the compressor to be run if the refrigerant pressure drops too low (e.g. you have a leak).
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Old 08-18-2003, 05:49 PM   #3
Tupper
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I took it to a local shop which is just down the road from my work. They are calling it a high pressure switch. They recommended evacuating the system, replacing the switch and recharging, but then changed the recommended repair to "replace compressor- switch is not removeable".

It is obvious that this sensor is screwed in. It has a hex , oh about
19-20mm or so, at its base. Similar to an oxygen sensor.

All the pressures are OK, according the thae shop.


I did make some other phone calls today one guy said that it is a heat sensor.


Any other help.


Dan
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Old 08-18-2003, 07:43 PM   #4
avk
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59E

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I believe that one is a thermal protection switch. The high/low pressure cutoff switch is located on the receiver-drier.
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Old 08-19-2003, 09:07 AM   #5
Tupper
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Location: Hanover Park, IL
Default

Well,

Right now I have this sensor bypassed. It appears to run OK. It runs for a while then begins to cycle on and off just like it always has. This confirms that this sensor is failing.


Any idea how to get a replacement. All of the dealers that I have spoken with claim that this is part of the compressor.




Dan
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