04 JEEP LIBERTY AIR CONDITIONING

  • Tiny
  • Panther440
  • 2004 Jeep Liberty
  • 2WD
  • automatic
  • 110,000 miles

2004 Jeep Liberty air conditioning question. Compressor replaced last fall and ran cold. Compressor clutch not engaging now. Have used jump wire on low pressure switch and still didn't kick in. Applied separate 12 volt source to pigtail that sits on top of compressor and clutch engages that way. Engine compartment AC fuse is ok, Driver compartment AC fuse is ok. Why isn't the system delivering power to compressor clutch on its own?

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Saturday, April 23rd, 2011 AT 11:48 PM

7 Replies

  • Tiny
  • rasmataz
  • Member

Check the AC relay-You sure it has the correct amount of freon

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Saturday, April 23rd, 2011 AT 11:56 PM
  • Tiny
  • rasmataz
  • Member

Wrench -you've taught me something here that I didn't know, sure appreicate-then again unable to view the diagram to give-shoot it in the dark-You have a great Happy Easter and take care buddy-Enjoy!

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Sunday, April 24th, 2011 AT 12:12 AM
  • Tiny
  • Wrenchtech
  • Expert
  • 20,297 posts

You lost me Ras. You can view my diagram?
I don't know what switch he tried to jump but this system doesn't have a cycling/low pressure switch.

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Sunday, April 24th, 2011 AT 12:16 AM
  • Tiny
  • rasmataz
  • Member

About the fuel pump relay from fuse no.14, there's no pressure switch in plain view-You have a nice day, out to find the golden egg-see you later

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Sunday, April 24th, 2011 AT 12:21 AM
  • Tiny
  • Wrenchtech
  • Expert
  • 20,297 posts

It has a 3 wire, 5v reference pressure switch that gives the PCM exact pressures for it to make decisions. The A/C clutch relay is powered by the fuel pump relay.

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Sunday, April 24th, 2011 AT 12:24 AM
  • Tiny
  • rasmataz
  • Member

The A/C clutch relay is powered by the fuel pump relay.

This where I lost you w/o the fuel pump relay-No AC-something new

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Sunday, April 24th, 2011 AT 1:48 AM
  • Tiny
  • Wrenchtech
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  • 20,297 posts

Why would you need A/C if the car isn't running?

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Sunday, April 24th, 2011 AT 1:50 AM

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