Battery Drain

HONDA PRELUDE
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JON FURILLO
  • MEMBER
  • 1 POST
1991 hondau prelude after sitting over a day the battery is drained ... 145000 miles the seat bealt lite and the door open lights have not been working in a few yrs , so i know that can not be the problem.. ANY other ideas ????????????? something is drawing on the battery ....
Nov 21, 2007 at 9:48 AM
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MHPAUTOS
  • ✓Experienced Mechanic
  • 31,937 POSTS
Hi there,

A good place to start is to fit an Amp meter between Battery + and the battery lead, this will show current draw on battery. If draw is above .1-.2 amps start pulling fuses and see which circuit is drawing current, also check with Alt disconnected as a faulty diode leaking to earth could be the problem, Have the battery load tested to may sure it is not faulty, check all earths are clean and tight.

Mark (mhpautos)
Nov 21, 2007 at 10:52 AM
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