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06-05-2017, 12:35 PM
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#1 |
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Senior Member
 
Join Date: Sep 2007
Location: Albuquerque NM
Posts: 7,878
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Ac. Compressorr issue
Why is my compressor engaging and then dis engaging the clutches every few seconds?
99 sonoma. 4.3 Trying to add freon and nothing...
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1967custom |
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06-05-2017, 01:10 PM
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#2 |
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Active Member
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Ac. Compressorr issue
Have you tried to add freon lately?
Usually undercharging will do this but over charging will also do it. Best way to see if it's overcharged is to hook it up with a full set of a/c hoses to check the psi on high and low sides -static and idling or running.
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68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive... |
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06-05-2017, 01:45 PM
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#3 |
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Senior Member
Join Date: Sep 2007
Location: Albuquerque NM
Posts: 7,878
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Re: Ac. Compressorr issue
My guage shows full safe. Not overcharged. But full full
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1967custom |
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06-05-2017, 04:44 PM
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#4 |
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Active Member
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Ac. Compressorr issue
If it started doing this after you recharged it, it may be overcharged. Barring obstructions or defective compressor cycle switch, the best way to find out if it's over or under charged is with set of a/c manifold gauges. I would do that first even if I had to have a shop test it before tearing into the system. You can run into unnecessary expense if compressor is damaged.
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68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive... |
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06-06-2017, 09:09 AM
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#5 |
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Registered User
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,661
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Re: Ac. Compressorr issue
Possible the orifice tube filter is mostly plugged. The moment the compressor cycles on, it over-pressures and the high pressure switch cuts out.
2nd the suggestion to use a dual set of gauges to test. |
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06-06-2017, 12:08 PM
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#6 |
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Senior Member
Join Date: Sep 2007
Location: Albuquerque NM
Posts: 7,878
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Re: Ac. Compressorr issue
Yup im gonna have to hook up guages. Any idea where the oraface tube is on a 4.4 vortec. 99 sonoma
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1967custom |
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06-06-2017, 05:30 PM
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#7 | |
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Active Member
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Ac. Compressorr issue
Quote:
 https://www.youtube.com/watch?v=aXz5jxDLgZ0
__________________
68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive... |
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06-15-2017, 09:33 PM
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#8 |
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Senior Member
Join Date: Sep 2007
Location: Albuquerque NM
Posts: 7,878
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Re: Ac. Compressorr issue
oh jeez really? as soon as I add Freon it starts doing that crazy clutch thing. I bet the tube is contaminated
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