Battery is being drained

THATFARMGUY

MEMBER
2001 FORD RANGER
4.0L
V6
4WD
AUTOMATIC
218,187 MILES

New alternator, new battery, new starter, new belt. No codes. Something is draining my battery. I know I have a short. Tested each and every fuse. The 26 and 29 fuses turned the light off on my light probe. Now I'm stumped.

Thursday, May 28th, 2020 AT 5:43 PM

3 Replies

DANNY L

MECHANIC
5,648 POSTS

Hello, I'm Danny.

Usually what we suggest to do is involved with your test light. Disconnect the negative battery. Hook your test light to the negative battery terminal and the negative battery cable clamp. The light should be illuminated slightly due to things that stay on continuously like clocks. Now start pulling a fuse out one at a time. When you find the suspect circuit the test light will dim. Hope this helps and thanks for using 2CarPros.

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Thursday, May 28th, 2020 AT 6:24 PM

THATFARMGUY

MEMBER
2 POSTS

I did that. But I used the positive terminal post and cable. I also pulled every single fuse out and put them back in one at a time.

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Thursday, May 28th, 2020 AT 7:33 PM

KEN L

MASTER CERTIFIED MECHANIC
43,047 POSTS

I have seen the GEM module cause this due to lack of shut down ability. This guide can help as well with the GEM module location in the diagrams below:

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

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

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