2003 Suburban AC not cold in front but cold in back

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October 10th, 2020, 5:06 AM

Kajdkmm7

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2003 Suburban AC not cold in front but cold in back

My front AC is not cold but my rear AC is cold. Freon checked good. Compressor seems to cycle often not sure if that is normal?

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October 10th, 2020, 5:41 AM

oilcanhenry

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Quote:

Originally Posted by Kajdkmm7

My front AC is not cold but my rear AC is cold. Freon checked good. Compressor seems to cycle often not sure if that is normal?

Can you get hold of an A/C gauge set? That might help Immensely in solving your issue. The compressor was intended to cycle, BTW.

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October 10th, 2020, 10:27 AM

Cusser

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Quote:

Originally Posted by oilcanhenry

Can you get hold of an A/C gauge set? That might help Immensely in solving your issue. The compressor was intended to cycle, BTW.

Post both low side and high side pressures at about 1800 rpm with compressor running.

NEVER ADD ANY SEALERS OR REFRIGERANT CONTAINING SEALERS !!!

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oilcanhenry (October 11th, 2020)

October 10th, 2020, 11:13 AM

PNW NBS Z71

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May have a blend door actuator problem or a controller panel problem, but yes, post the basics first. The pressure gauges help to see what is going on inside the system. But the actuators are a known weak spot. Check out a you tube video or 4 to see what I am talking about.

Sample of the controller, since I have no idea which you have: https://www.rockauto.com/en/moreinfo...12198&jsn=1693

Sample of the actuator: https://www.rockauto.com/en/moreinfo...12198&jsn=1763