Air condition not cold

Tiny
YOUNGSNETWORK
  • MEMBER
  • 2001 PONTIAC GRAND PRIX
  • 3.8L
  • V6
  • 2WD
  • AUTOMATIC
  • 180,000 MILES
I tried to use acpro to boost my ac because it's cool not cold. I followed all directions but when I plug it up it goes to the red. The compressor is coming on when I turn the AC on. I can see it spinning. I wanted ask if the low coolant light would have some affect on this? The coolant level is fine but someone told me it's the radiator level sensor causing the light to come on. I'm putting a new one on soon, but would that affect the acpro to go to red. If not what could it be? Thanks
Wednesday, May 22nd, 2019 AT 3:03 AM

46 Replies

Tiny
ASEMASTER6371
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Good morning,

No, they have nothing to do with it.

What is the pressure on the gauge?

What is the outside temperature?

Roy
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Wednesday, May 22nd, 2019 AT 3:20 AM
Tiny
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In the middle of the red. Starts at 60 ends at 150. So I guess 105. Outside about 90 degrees.
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Thursday, May 23rd, 2019 AT 11:14 AM
Tiny
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That is high. The pressure should be at ambient temperature.

Check the diagram I sent you. Check the fuses for power on both sides with the key on.

Roy
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Thursday, May 23rd, 2019 AT 11:25 AM
Tiny
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Can you email me that diagram so I can make it bigger?
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Thursday, May 23rd, 2019 AT 12:44 PM
Tiny
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Not a valid e mail

Roy
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Thursday, May 23rd, 2019 AT 12:49 PM
Tiny
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Youngsnetwork@gmail. Com
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Thursday, May 23rd, 2019 AT 12:51 PM
Tiny
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Same one on file.
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Thursday, May 23rd, 2019 AT 12:52 PM
Tiny
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Sorry, need another email. That one does not work for me.

Roy
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Thursday, May 23rd, 2019 AT 1:02 PM
Tiny
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Checked fuses from diagram, all of they are good.
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Thursday, May 23rd, 2019 AT 2:54 PM
Tiny
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Did you verify power on both sides with a test light?

Roy
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Thursday, May 23rd, 2019 AT 2:55 PM
Tiny
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Yes.
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Thursday, May 23rd, 2019 AT 2:59 PM
Tiny
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Can you go to the relay and remove it and check for power on two terminals with the key on?

Roy
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Thursday, May 23rd, 2019 AT 3:10 PM
Tiny
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Two have power, and two of them don't have power.
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Thursday, May 23rd, 2019 AT 3:20 PM
Tiny
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Okay, when you turn on the AC can you hear the relay click? Install the relay before doing this.

Roy
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Thursday, May 23rd, 2019 AT 3:23 PM
Tiny
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It's just me. The relay is under the hood.
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Thursday, May 23rd, 2019 AT 3:25 PM
Tiny
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Can you hear it click? Trying to see if the PCM is grounding the control side of the relay.

Better, turn the key on, go under the hood to the relay and remove it. Then install it and see if it clicks.

Roy
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Thursday, May 23rd, 2019 AT 3:31 PM
Tiny
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I tried it with key on and AC off, no click. Key on with AC on, no click.
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Thursday, May 23rd, 2019 AT 3:39 PM
Tiny
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Okay, the PCM is not grounding the control side.

Go to the pressure switch on the AC line and see if there is power in the connector.

Roy
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Thursday, May 23rd, 2019 AT 3:42 PM
Tiny
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Where is it?
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Thursday, May 23rd, 2019 AT 3:47 PM
Tiny
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On the dryer or the accumulator on the AC line. It is a three wire switch.

Roy
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Thursday, May 23rd, 2019 AT 3:51 PM

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