Question about the AC high pressure switch.
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Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Question about the AC high pressure switch.
Hello, everyone.
I've since retired from owning my repair shop and am now not at well equipped to repair mechanical failures on my truck. What's up with it right now is the AC is intermittent. The reason why is the high pressure switch has a burned pin on it. My question is: is there a check valve underneath the high pressure switch? A lot of vehicles are equipped as such and you can remove the pressure switch without having to evacuate the system. I don't have an AC machine any more and I don't want to blow all the R134 out because there's no check valve. It would save me a lot of money to be able to just R&R the switch with a new one, put a repair plug on it for the burned pin and be done. No check valve, then I have to take it in somewhere and pay to have it done.
Hope all is well with you all.
I've since retired from owning my repair shop and am now not at well equipped to repair mechanical failures on my truck. What's up with it right now is the AC is intermittent. The reason why is the high pressure switch has a burned pin on it. My question is: is there a check valve underneath the high pressure switch? A lot of vehicles are equipped as such and you can remove the pressure switch without having to evacuate the system. I don't have an AC machine any more and I don't want to blow all the R134 out because there's no check valve. It would save me a lot of money to be able to just R&R the switch with a new one, put a repair plug on it for the burned pin and be done. No check valve, then I have to take it in somewhere and pay to have it done.
Hope all is well with you all.
Butt-Head
Joined: Apr 2004
Posts: 9,462
Likes: 2,942
From: Reed Point, MT
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Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Thank you for the help, cleatus12r.
When the new parts arrive, I'm going to see if I cannot rig up some sort of heat-sink that will draw that excess heat out of the switch. This is the second failure of that plug. And now the terminal is melted in the pressure switch as well.
When the new parts arrive, I'm going to see if I cannot rig up some sort of heat-sink that will draw that excess heat out of the switch. This is the second failure of that plug. And now the terminal is melted in the pressure switch as well.
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