A/C Compressor Engagement Failure Troubleshooting
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Joined: Jan 2019
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From: Phoenix, AZ
A/C Compressor Engagement Failure Troubleshooting
RE: 2000 XKR
My A/C compressor is not engaging with car running when the A/C switch is pressed.
Checked the 10A fuses- O.K. Did NOT check the A/C Compressor Clutch relay... how does one check a relay?
Would a low refrigerant (pressure) be indicated in preventing the compressor activation?
What would the simplistic troubleshooting hierarchy of steps be?
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2009 XKR Convertible
My A/C compressor is not engaging with car running when the A/C switch is pressed.
Checked the 10A fuses- O.K. Did NOT check the A/C Compressor Clutch relay... how does one check a relay?
Would a low refrigerant (pressure) be indicated in preventing the compressor activation?
What would the simplistic troubleshooting hierarchy of steps be?
- IF fuse(s) OK ->
- Check relay?
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2009 XKR Convertible
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Joined: Dec 2010
Posts: 8,833
Likes: 2,920
From: Douglasville Ga.
To me he simplest test would be to measure the pressure in the A/C system with the engine running and A/C set to cold and fan on high. Several auto parts stores will loan the test gauges, which come with instructions. Odds are pretty good the system pressure is too low and the clutch will not engage.
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