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What would cause ac compressor clutch to engage only when wired direct?
Capri93
could be several things. the signal comes from the switch on your dash and follows wiring to a relay and more wiring to the clutch. you are bypassing all of that when "jumping" the clutch. if it works when jumped the clutch is good. get a test light and check the wiring to the clutch. good luck....a/c wiring sucks
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∙ 13y ago
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Already changed fuse and air conditioning compressor clutch assembly but no power going to cause the compressor to kick on to pull back the clutch so that compressor kicks on what could be the cause?
What specific kind of vehicle do you have? It does sound like the clutch may be bad, but we also need to know what you are working on. You need to run power straight from the battery to the compressor. If is still does not engage then you need to replace the compressor and clutch, they are dead. If they do engage, then you have a wiring or computer issue.
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