Notices
Series I Trouble Shooting This is the place to learn more about or discuss any issues you're having with your RX-8

Flat battery overnight

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 12-30-2006, 06:28 PM
  #1  
Speedsteve
Thread Starter
 
Speedsteve's Avatar
 
Join Date: Apr 2005
Location: Belgium
Posts: 64
Likes: 0
Received 0 Likes on 0 Posts
Flat battery overnight

I installed the Interceptor and cooling mod. Next morning , the car wouldn't start. I checked the battery and it was just very dead. I charged the battery, let the dealer run a test on it and he concluded that the battery was still ok. I connected the battery and measured the current at the battery.
I saw a 450-350 mA going to about 10mA after a few seconds. So not really a current to get a battery flat overnight. Next morning, same issue. Just to make sure it really wasn't the battery, I bought a new one. Next morning.. yep flat.

I do have some other extra's on the room fuse, and also removed that fuse, just to make sure none of these devices were responsible, but next morning .. yep...

It seems like something just starts using a lot of current(?) after a period of time...

Before installing the Interceptor and cooling mod, I didn't have any issues.

Does anybody have a clue ? Any ideas on how to log the current over a long periode of time ?
Old 12-30-2006, 06:55 PM
  #2  
Registered User
 
scottmhr1's Avatar
 
Join Date: Sep 2004
Posts: 258
Likes: 0
Received 0 Likes on 0 Posts
Don't think anyone could answer because they don't know exactly what you did to screw it up. Is obvious that whatever you did caused the problem though. go back step by step and see what you did that attached to the electrical system.
Old 12-30-2006, 08:45 PM
  #3  
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 20,559
Received 1,508 Likes on 853 Posts
Remember the RX8 system works by grounding each elect. device to switch it on .
Old 12-31-2006, 02:33 PM
  #4  
Speedsteve
Thread Starter
 
Speedsteve's Avatar
 
Join Date: Apr 2005
Location: Belgium
Posts: 64
Likes: 0
Received 0 Likes on 0 Posts
...

Of course I did go back and removed the latest stuff, next morning ... as empty as my beers on a friday evening.

If I did screw something up, I should be able to measure what device is responsible, no ? But nope, no smells, battery is OK, charger is just fine, ... seems I have to go over it again..

I will check the groundings...

Thx ..
Old 12-31-2006, 02:37 PM
  #5  
Modulated Moderator
iTrader: (3)
 
dannobre's Avatar
 
Join Date: Feb 2004
Location: Smallville
Posts: 13,718
Received 337 Likes on 292 Posts
Trunk open ...or interior light on?

I did that once on another car.....took the stuff out of the trunk...installed it and killed the battery. Took me about 1/2 hour with a DMM to figure out the draw was on the trunk light circuit. Felt like a total a**
Old 01-01-2007, 01:00 PM
  #6  
Mu ha.. ha...
 
Razz1's Avatar
 
Join Date: Aug 2004
Location: Cali
Posts: 14,361
Likes: 0
Received 3 Likes on 3 Posts
I bet you hooked up the cooling Mod wrong.
Old 01-02-2007, 02:53 AM
  #7  
Speedsteve
Thread Starter
 
Speedsteve's Avatar
 
Join Date: Apr 2005
Location: Belgium
Posts: 64
Likes: 0
Received 0 Likes on 0 Posts
cooling mod

I checked the light in the trunk just to be sure, but that is ok.

I installed the cooling mod from Mazsport and that is a very easy mod to install.
Grounding the negative side to the chassis (above the ECU), replacing the relays on the orther side and that is it.

I just let the dealer take a look, he was thinking about the extra's that are installed on the "room" fuse, but I have already removed that fuse to test, ...
So, the search continues... it must be something ... but is just seems very hard to pinpoint.. growwll..

In the meantime, I ordered a battery protection device at : http://www.noflatbatteries.com/ ...
Old 01-02-2007, 03:08 AM
  #8  
Lubricious
 
Nubo's Avatar
 
Join Date: Oct 2003
Location: SF Bay Area, California
Posts: 3,425
Likes: 0
Received 4 Likes on 4 Posts
If you've got a camcorder you could log your meter that way.

Are you sure the system is charging the battery?
Old 01-02-2007, 05:30 AM
  #9  
Registered
 
Go48's Avatar
 
Join Date: Jul 2004
Location: Fayetteville, PA
Posts: 2,598
Likes: 0
Received 2 Likes on 2 Posts
Do you have NAV? One owner had a problem with the NAV not shutting down when the car was switched off. You can do a search for that in the forum.
Old 01-02-2007, 06:25 AM
  #10  
Speedsteve
Thread Starter
 
Speedsteve's Avatar
 
Join Date: Apr 2005
Location: Belgium
Posts: 64
Likes: 0
Received 0 Likes on 0 Posts
Using a camcorder... what a great idea... why didn't I come up with this .. I will check the NAV system aswell... but I think it is on the Room fuse ...
Thx guys!
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Shankapotamus3
Series I Trouble Shooting
28
03-14-2021 03:53 PM
92trbolzr
Series I Trouble Shooting
24
07-08-2020 07:59 AM
cliffkemp
Series I Trouble Shooting
7
10-03-2015 11:11 PM
GK1707
RX-8 Parts For Sale/Wanted
0
09-27-2015 07:33 PM
Evan Gray
Series I Trouble Shooting
0
09-26-2015 12:30 PM



You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Flat battery overnight



All times are GMT -5. The time now is 10:54 AM.