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A/C compressor / pressure sensor problems?

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Old Sep 21, 2009 | 04:49 PM
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TurboBerserker's Avatar
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Burning Brakes
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Default A/C compressor / pressure sensor problems?

Ok, my a/c blows hot, so I tried to add 134a -- initially my static pressure was 0 on both ports, but it holds 134a. I brought it up to 100psi on both side (76* ambient) but couldn't get the clutch to engage.

I disconnected the battery for 15 minutes, but no dice. I verified with EFI that the pressure sensor is sending a voltage of 1.2 (have no idea what that actually means, however).

Is the compressor toast?
Sensor bad?

Any ideas of where to look next will be appreciated.
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Old Sep 21, 2009 | 09:05 PM
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0Paul Ruggeri
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Are you getting power to the compressor with the AC turned on?
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Old Sep 21, 2009 | 10:19 PM
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you know what Lucky would say? And he would be right! "CODES"
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Old Sep 21, 2009 | 11:50 PM
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No codes. It's a manual AC.

I'm not sure how to check if the AC clutch is getting power with the engine running?
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Old Sep 22, 2009 | 12:39 PM
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From: Kinston North Carolina
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OK, this and a Meter ought to get you going.
-----------------------------------------------------
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Old Sep 22, 2009 | 02:37 PM
  #6  
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Yeah, wasn't thinking the other night. I was trying to figure out how to check the clutch internally rather than checking the relays and harness

I did find out that I can't command the A/C clutch on or off with EFI, so it's either at the relay, harness issue or in the compressor.
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