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AC Low Pressure Switch keeps failing

 
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Old 06 Jul 2018, 11:33 am
falconut's Avatar
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Default AC Low Pressure Switch keeps failing

Maybe somebody here can give me some areas to look into. My son now drives my 2007 base PT, but only really uses it as a back and forth vehicle, so not a lot of mileage. A couple weeks ago the AC just stopped. The compressor wasn't turning on. I replaced the low pressure switch and it started working again, I also checked the charge and it was around 40psi, so in the range.

About a week later he drive the car (1st time since replacing switch) and drove about 30 miles & it worked fine. On the way home it stopped almost immediately. I exchanged the switch for a new one and it worked fine again.

A couple days later he drove it again and this time it stopped almost immediately after turning it on. Any ideas as to what could be casing the switch to fail? I doubt I got 2 defective switches. Any help would be appreciated.
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Old 12 Jul 2018, 11:14 am
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Default Re: AC Low Pressure Switch keeps failing

I'm guessing this isn't a common occurrence.
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