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A/C issues?

Tiny
BHAMDOC1973
  • MEMBER
  • 2016 KIA RIO
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 86,000 MILES
The car has low miles so it's strange. I hooked up the gauges and opened the low side and it showed full, high side I think it was around 100. Not taking any freon. I have never seen these types of compressors. It turns but I think these come out when it engages so I don't think it is. Where is the relay for it? I checked the fuses and they fine. I saw the fan working at some point but it's not on with the A/C on. I guess compressor must engage first.
KNADN4A35G6627655
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Friday, April 19th, 2024 AT 9:52 AM

5 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,602 POSTS
This car does not have an A/C compressor relay because the A/C control module varies the voltage to the internal valve inside the compressor, here are the wiring diagrams so you can see how the system works. I would check all fuses and then do a CAN scan to see if any codes are stored for the AC control module, if not remove the connector at the compressor and use a voltmeter, when you first turn in on it should go to 12 volts and if so, the compressor is bad.

Here is a generic guide to help you step by step with instructions in the diagrams below to show you how on your car:

https://www.2carpros.com/articles/replace-air-conditioner-compressor

Here is how to change the compressor out in your car. Check out the images (below). Please upload pictures or videos in your response to the problem so we can see what's going on.

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Friday, April 19th, 2024 AT 10:20 AM
Tiny
BHAMDOC1973
  • MEMBER
  • 1,571 POSTS
What do you think?
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Friday, April 19th, 2024 AT 11:09 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,602 POSTS
Yep, it is getting signal, I would replace the A/C compressor, the seal has let go, thanks for the video, please let me know if that works.
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Saturday, April 20th, 2024 AT 9:05 AM
Tiny
BHAMDOC1973
  • MEMBER
  • 1,571 POSTS
Ordered one, yes that's what I thought, thanks for the help.
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Saturday, April 20th, 2024 AT 9:52 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,602 POSTS
You are welcome, please use 2CarPros anytime we are here to help.
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Sunday, April 21st, 2024 AT 10:46 AM

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