I get in the car to leave the battery is always drained?

1992 CADILLAC DEVILLE
150,000 MILES • 4.9L • V8 • 2WD • AUTOMATIC
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CAROLYN REINSCHMIEDT
  • MEMBER
  • 1 POST
I have replaced the starter and have a new battery. Still when I get in the car to leave the battery is always drained. When trying to jump the battery it will sometimes take an hour. I just keep rearranging cables for possibly better connection and when I turn over the engine to see if it starts my new starter just clicks. I have no idea what finally got the battery jumped. Is there anything I might be overlooking that could cause this to happen like fuses or something? Thank you for your Expertise in advance. Carol
Jun 30, 2023 at 3:20 PM
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STRAILER
  • ✓Experienced Mechanic
  • 55,249 POSTS
The system has a draw, the first thing I like to do is remove the A/C compressor control relay because when they stick it leaves the compressor engaged and draws the battery down. here is a guide that can help and the location of the relay so you can remove it to see if the problem goes away:

https://www.2carpros.com/articles/car-battery-dead-overnight


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Jul 1, 2023 at 6:29 AM
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