AC Problems
May 14th, 2018, 7:32 PM
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AC Problems
First off, my apologies if I am posting in the wrong section. I’m new to the forum so hold on tight. I have a 2005 Chevy 2500 6.6L. Last year the AC worked but would freeze up and stop blowing, then eventually thaw out and work again. This year it doesn’t work at all. I put a test light on the compressor plugs and had no power to the compressor. I don’t know whether or not to replace it or if it’s an electrical issue somewhere. All the fuses are good. Any thoughts would be appreciated!
May 14th, 2018, 9:26 PM
#2
if the system has low pressure...the low pressure switch will open and not allow the compressor to turn on
you could briefly (to long and the compressor will be damaged) jumper the low pressure switch...if it engages the compressor...have the system recovered, charged and leak tested.
how were you able to confirm the evaporator froze up?
you could briefly (to long and the compressor will be damaged) jumper the low pressure switch...if it engages the compressor...have the system recovered, charged and leak tested.
how were you able to confirm the evaporator froze up?
May 15th, 2018, 3:39 PM
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if the system has low pressure...the low pressure switch will open and not allow the compressor to turn on
you could briefly (to long and the compressor will be damaged) jumper the low pressure switch...if it engages the compressor...have the system recovered, charged and leak tested.
how were you able to confirm the evaporator froze up?
you could briefly (to long and the compressor will be damaged) jumper the low pressure switch...if it engages the compressor...have the system recovered, charged and leak tested.
how were you able to confirm the evaporator froze up?
May 15th, 2018, 4:02 PM
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May 15th, 2018, 5:45 PM
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May 15th, 2018, 6:08 PM
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May 15th, 2018, 7:18 PM
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Actually like you didn't say. You can put gauges on static, you should read same across the compressor. If the system has a charge that will allow the compressor to operate, then start systematically troubleshooting where you don't have power to the ac clutch.