Question about 1990 Honda Civic

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AC Clutch engages as soon as battery is hooked up

AC Clutch is engaging and draining battery without car on. WTF??

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  • Thomas Jun 03, 2009

    can not believe i didnt think of this... amazing what happens when ya get frustrated! Ill try that tomorrow morning. Thanks

  • Thomas Jun 04, 2009

    Alright Everybody, if you have this problem it is one of two things: You left your hood open and it rained, or your ac clutch relay is bad. On a 1990 honda civic 1.5 the ac relay is located behind the passenger side headlight. It is a rubber covered gadget with wires coming out the bottom. Remove the rubber cover, and unplug the relay. Carefully open the relay housing, and clean the realy out with electronic cleaner. ALLOW TO DRY COMPLETELY! If you damage this relay, it will cost you around $45 to replace. Reinstall the relay, and you are off to go! Have fun. Hope this helps.

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  • Honda Master
  • 3,854 Answers

Your A/C relay may have gone bad and has disconnected the power to the A/C compressor clutch.
Not sure where the relay is to your A/C, it may be in the fuse box but regardless check the relay and replace if it's seized. If you like in the mean time, you can always disconnect the wire harness to the A/C compressor clutch to keep the battery from draining and save your compressor from over heating.
Good luck and hope this helps. Keep me posted and be glad to help.

Posted on Jun 03, 2009

Testimonial: "Well, turned out to be the engine was saturated with water, and I just removed the fuse for the ac clutch, do not need it this year! LOL"

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Posted on Jan 02, 2017

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