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Battery drain problem

Tiny
HUNTLEYSCOTT86
  • MEMBER
  • 1999 CHRYSLER CONCORDE
  • 150,000 MILES
I have been trying to figure out the root cause for my car going dead over the weekends. Does fine during the week I drive it everyday on the weekends it sits till Monday. And of course the battery is dead. I disconnected the negative on the battery and with the car off found a draw of.8 amps. I removed all fuses and tested the draw again and had no amp testing each fuse one at a time found the following.

.062 TCM
.001 Sun Roof
.116 Stop Lamps
.62 Park & Horn
.002 ASD

.8 amps with all fuses installed

Just wanted to see where to go now with these numbers.
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Sunday, October 9th, 2011 AT 9:04 PM

7 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
That shouldn't kill the battery in 2 days. Are you sure the battery is good? How old is it?
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Sunday, October 9th, 2011 AT 9:10 PM
Tiny
HUNTLEYSCOTT86
  • MEMBER
  • 4 POSTS
Brand new battery only a month old
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Sunday, October 9th, 2011 AT 9:16 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
The largest draw is from the horn / park. Try leaving that fuse out to see if it changes things. If it does, you will need to start looking for a short.
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Sunday, October 9th, 2011 AT 9:30 PM
Tiny
HUNTLEYSCOTT86
  • MEMBER
  • 4 POSTS
I have found a 1.2 amp draw across fuse 19 Interior lights. I have read online the PCM and TCm could be the cause so I have disconnected both and no change the the draw. Anything I should check.
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Saturday, October 15th, 2011 AT 7:52 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
Does the draw stop when you pull the fuse?
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Sunday, October 16th, 2011 AT 12:09 AM
Tiny
HUNTLEYSCOTT86
  • MEMBER
  • 4 POSTS
Yes
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Tuesday, October 18th, 2011 AT 10:34 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
There has to be a short in the wiring to that circuit. It's time to start tracing circuits for damaged wires.
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+1
Tuesday, October 18th, 2011 AT 10:52 PM

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