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Replacement A/C compressor not working?

Tiny
MICHAELMAXWELL420559
  • MEMBER
  • 2003 CHRYSLER PT CRUISER
  • 2.4L
  • TURBO
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
Yes, what I'm needing help with is the A/C compressor went out and so I ordered a new one. When the new one got to me, I noticed that it had an extra plug on it that my old one didn't have. So, I didn't think anything of it, so I installed it and now my A/C still doesn't work. Is there any way that I can make my A/C work or do I need a different compressor? I don't have a connection plug for the extra part on my wire harness. Please any help would be greatly appreciated. Thank you
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Friday, May 19th, 2023 AT 8:28 PM

7 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

When you say there are extra plugs, do you mean electrical connectors? There should only be one wire to the compressor clutch, a dark blue wire with a black tracer. Is that what you are seeing? See pic below.

Let me know.

Joe
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Friday, May 19th, 2023 AT 11:22 PM
Tiny
MICHAELMAXWELL420559
  • MEMBER
  • 26 POSTS
Not quite the old compressor only has one plug-in connector on the compressor but the new one has 2 connections the regular one and one on the back of the compressor but my car only ha she one plug-in.
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Saturday, May 20th, 2023 AT 1:52 AM
Tiny
MICHAELMAXWELL420559
  • MEMBER
  • 26 POSTS
In the picture the green plug in is not on the old. Compressor bit the picture looks just like the new one I have and also my A/C system only has the one port to put the Freon into the system bit it doesn't have the other port.
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Saturday, May 20th, 2023 AT 1:59 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

Based on your old one and what I am seeing in the wiring schematics, they provided the wrong compressor.

The green plug on the new one may be a pressure switch which is located differently. Also, the idea that you only have one port indicates the other should be on one of the A/C lines.

Have you tried contacting the supplier?

Let me know.

Joe
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Saturday, May 20th, 2023 AT 9:07 PM
Tiny
MICHAELMAXWELL420559
  • MEMBER
  • 26 POSTS
No, not yet, but I will for sure. Also, the other one that I don't have a plug on my wire harness has to be plugged in for it to work, right?
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Sunday, May 21st, 2023 AT 7:30 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

If it is a pressure switch, yes, it needs to be connected to work. I am going to ask the site owner what he feels that plug is for. He is excellent with AC systems. You may see a response from him. His name is Ken.

Let me know how things work out for you.

Take care,

Joe
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Sunday, May 21st, 2023 AT 7:18 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,610 POSTS
Hi, I think Joe is correct. The compressor is the wrong one or unit is universal and doesn't need to be used. With the system on I would use a test light to see if there is power going to the compressor.

These guides can help:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

and

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

Please go over these guides and get back to us.

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Monday, May 22nd, 2023 AT 10:45 AM

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