AC blows hot compressor clicks on and off like empty but not

Tiny
MCFUDDEN
  • MEMBER
  • 2002 FORD EXPLORER
  • 4.0L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 172,000 MILES
So a little history on the explorer; the engine was re-manufactured 10,000 miles ago and a new transmission was built and installed 1,000 miles ago. I didn’t rebuild the transmission, and new one was built and put in. So when I turn on max air I can look under the hood and see the compressor clutch click on and run for a second then kick off. That usually means it’s out of Freon. I tried to charge the system and couldn’t get a pressure reading at all, and to my surprise, Freon is already in it. What’s going on here?
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Sunday, April 14th, 2019 AT 6:41 PM

4 Replies

Tiny
SCWICKEDSTANG
  • EXPERT
Hello,

This could be a few problems here like the A/C compressor relay going bad, bad connections and wires, climate control system, or a few other things. I have included a link for you to go to:

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Please go through this guide and get back to us with what you find out please.

Thanks,
Alex
2CarPros
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Sunday, April 14th, 2019 AT 9:24 PM
Tiny
MCFUDDEN
  • MEMBER
Did a little digging and I suspect it might be the pressure cycling switch since the compressor is kicking on and off so fast.
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Sunday, April 14th, 2019 AT 10:02 PM
Tiny
MCFUDDEN
  • MEMBER
It was some from column A and some from column B. It was the pressure cycling switch, however it wasn t malfunctioning. It was just super low on Freon because of an un-diagnosed teeny leak. I thought my gauge was broken when it showed no pressure, and assumed the system was charged. It wasn t. Since the pressure was so low the compressor wouldn t stay on long enough to load from the low pressure side.
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Tuesday, April 16th, 2019 AT 8:14 PM
Tiny
SCWICKEDSTANG
  • EXPERT
Hello again,

I'm happy to hear that you got it fixed. Great job! Please get back to us if you have any other vehicle related questions. That's what we are here for.

Thanks,
Alex
2CarPros
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Tuesday, April 16th, 2019 AT 9:47 PM

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