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AC parts terminology question

F250 on Sat April 25, 2009 8:43 PM User is offline

Is the "Head Pressure Switch", "High Pressure Cut-Out Switch", and "Refrigerant Contamination Switch" the same thing? My service manual shows them all in the same spot under the hood, but each manual/diagram I have calls it something different (one of the three above). The only ac switches I see on my truck are the "clutch cycling switch" located on the accumulator, and the the one on the ac line, which I believe is one of the names mentioned above. Just looking for clarification, thanks.

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99 Ford F250 Superduty with oem AC

Chick on Sat April 25, 2009 9:14 PM User is offlineView users profile

Just different terms for the same high pressure switch..

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

GM Tech on Sat April 25, 2009 9:15 PM User is offline

And your truck is the Ford in your signature panel I assume.....yes sounds like all the same- if three wires to the "switch" then it is a pressure transducer--

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The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

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