2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
Sponsored by:

car battery keeps dying

Thread Tools
 
Search this Thread
 
Old 04-02-04, 03:05 PM
  #1  
Full Member

Thread Starter
 
Join Date: Oct 2003
Location: san jose
Posts: 215
Likes: 0
Received 0 Likes on 0 Posts
car battery keeps dying

for some reason my s4 t II battery keeps dying. i charge it and over night i go to start it up and the battery is drained. does anybody know if there is a problem with something staying on that would cause the battery to drain.
Old 04-02-04, 03:09 PM
  #2  
RX7less **(

iTrader: (6)
 
igottafc's Avatar
 
Join Date: Dec 2003
Location: Novi Michigan
Posts: 6,916
Likes: 0
Received 0 Likes on 0 Posts
i have the same problem too. ive pretty much narrowed down to both the battery and the alternator. My lights dim when im on the brakes, and why battery will die even if i charge it and disconnect it from the car. Im pretty sure that one of the cells inside the battery has cracked. Im going for an optima redtop battery. Hopefully this will cure mine and your problem. -alex
Old 04-02-04, 03:09 PM
  #3  
RX7less **(

iTrader: (6)
 
igottafc's Avatar
 
Join Date: Dec 2003
Location: Novi Michigan
Posts: 6,916
Likes: 0
Received 0 Likes on 0 Posts
i have the same problem too. ive pretty much narrowed down to both the battery and the alternator. My lights dim when im on the brakes, and why battery will die even if i charge it and disconnect it from the car. Im pretty sure that one of the cells inside the battery has cracked. Im going for an optima redtop battery. Hopefully this will cure mine and your problem. -alex
Old 04-02-04, 03:10 PM
  #4  
RX7less **(

iTrader: (6)
 
igottafc's Avatar
 
Join Date: Dec 2003
Location: Novi Michigan
Posts: 6,916
Likes: 0
Received 0 Likes on 0 Posts
i have the same problem too. ive pretty much narrowed down to both the battery and the alternator. My lights dim when im on the brakes, and why battery will die even if i charge it and disconnect it from the car. Im pretty sure that one of the cells inside the battery has cracked. Im going for an optima redtop battery. Hopefully this will cure mine and your problem. -alex
Old 04-02-04, 03:11 PM
  #5  
RX7less **(

iTrader: (6)
 
igottafc's Avatar
 
Join Date: Dec 2003
Location: Novi Michigan
Posts: 6,916
Likes: 0
Received 0 Likes on 0 Posts
i have the same problem too. ive pretty much narrowed down to both the battery and the alternator. My lights dim when im on the brakes, and why battery will die even if i charge it and disconnect it from the car. Im pretty sure that one of the cells inside the battery has cracked. Im going for an optima redtop battery. Hopefully this will cure mine and your problem. -alex
Old 04-02-04, 03:12 PM
  #6  
RX7less **(

iTrader: (6)
 
igottafc's Avatar
 
Join Date: Dec 2003
Location: Novi Michigan
Posts: 6,916
Likes: 0
Received 0 Likes on 0 Posts
i have the same problem too. ive pretty much narrowed down to both the battery and the alternator. My lights dim when im on the brakes, and why battery will die even if i charge it and disconnect it from the car. Im pretty sure that one of the cells inside the battery has cracked. Im going for an optima redtop battery. Hopefully this will cure mine and your problem. -alex
Old 04-02-04, 03:15 PM
  #7  
RX7less **(

iTrader: (6)
 
igottafc's Avatar
 
Join Date: Dec 2003
Location: Novi Michigan
Posts: 6,916
Likes: 0
Received 0 Likes on 0 Posts
holy ****, a penta post, my bad
Old 04-02-04, 07:42 PM
  #8  
Full Member

 
Doogy's Avatar
 
Join Date: Mar 2004
Location: johnstown
Posts: 51
Likes: 0
Received 0 Likes on 0 Posts
i have the same prob but i have narrowed it down to the security system
Old 04-02-04, 08:35 PM
  #9  
I Dislike Everything

iTrader: (1)
 
rowtareh?'s Avatar
 
Join Date: Apr 2002
Location: St. Louis/Southern Illinois
Posts: 3,701
Likes: 0
Received 7 Likes on 7 Posts
Your battery is dead, or your alternator is sucking up all your power when you use blinkers, headlights, fog lights, radio, heat or a/c.

I would just buy a Joe Schmoe battery from Wal Mart and see if that is the problem. Don't go spending 100+ bucks on a battery, when the battery might not be the problem.

I had the same thing with my truck, and it was narrowed down to the alternator. I had the same exact problems you did. But an alternator on a Ford Truck from 1984 is not fun changing out. Right below power steering pump.

Good luck and be safe. Battery acid will **** you up real good.
Old 04-02-04, 08:38 PM
  #10  
I Dislike Everything

iTrader: (1)
 
rowtareh?'s Avatar
 
Join Date: Apr 2002
Location: St. Louis/Southern Illinois
Posts: 3,701
Likes: 0
Received 7 Likes on 7 Posts
It can also be a starter solenoid, but that is doubtful.
Old 04-03-04, 12:29 AM
  #11  
Boost This!

 
bcty's Avatar
 
Join Date: Nov 2001
Location: Nanaimo, B.C, Canada
Posts: 1,935
Likes: 0
Received 0 Likes on 0 Posts
i am having this problem right now with my red top.. i think it might be my alarm since its on and i ahvent ran the car much in a long time
Old 04-03-04, 04:22 AM
  #12  
Moderator

iTrader: (1)
 
silverrotor's Avatar
 
Join Date: Mar 2002
Location: Toronto, Corporate Canada
Posts: 7,592
Received 5 Likes on 5 Posts
I replied to your other duplicate thread on how to check for a short.
Old 04-11-04, 09:04 PM
  #13  
Full Member

Thread Starter
 
Join Date: Oct 2003
Location: san jose
Posts: 215
Likes: 0
Received 0 Likes on 0 Posts
well i though it could be the security system but it hasnt been working. anyways i just bought a new battery so i think im going to be buying a new alternator.
Old 04-11-04, 09:19 PM
  #14  
SOLD THE RX-7!

 
Scott 89t2's Avatar
 
Join Date: Mar 2001
Location: Vancouver, BC, Canada
Posts: 7,451
Likes: 0
Received 0 Likes on 0 Posts
you need an ammeter. stick it between the battery and battery wire (either one) it'll read a current. pull fuses one by one untill the current is gone. you have just found where the current is going.
Old 04-11-04, 09:23 PM
  #15  
Rotary Freak

iTrader: (7)
 
sub9lulu's Avatar
 
Join Date: Jun 2003
Location: FL
Posts: 2,739
Likes: 0
Received 1 Like on 1 Post
well the guage light will go dim when i step on the brake, is it suppose to be like that ?
Old 04-11-04, 09:36 PM
  #16  
Full Member

 
Join Date: Aug 2003
Location: Vancouver
Posts: 120
Likes: 0
Received 0 Likes on 0 Posts
I had the same problem

First, check your battery if it is old, try to replace it see if that works.
Next see if the alternator is giving enough charge to the battery when its running, u'll need a shop for equipment to do this.
And check if something is draining your battery when its off like a light, or something

hope that helps
Old 04-11-04, 11:20 PM
  #17  
RX7less **(

iTrader: (6)
 
igottafc's Avatar
 
Join Date: Dec 2003
Location: Novi Michigan
Posts: 6,916
Likes: 0
Received 0 Likes on 0 Posts
well i just put in my Optima redtop battery 2days ago and all i can say is Wowee!! cranks over very hard and fast everytime. Now more draining probs, i also got one of silverorotors FD alternators. Very well put together, made a world of a difference, above about 1.2k lights dont dim as bad as before, idle still drops alot when on the brakes but i know thats gotta be somthing else. PM silverrotor and one of those FD alts if you plan on getting an alt before he stops selling them.
Old 04-12-04, 12:15 AM
  #18  
SOLD THE RX-7!

 
Scott 89t2's Avatar
 
Join Date: Mar 2001
Location: Vancouver, BC, Canada
Posts: 7,451
Likes: 0
Received 0 Likes on 0 Posts
igottafc read the question... you are not helping him at all.

he has a short circuit if it's draining over night. you need an ammeter to find where it's comming from.
Old 04-12-04, 12:18 AM
  #19  
BRAAAAAP pssh BRAAAAAP

iTrader: (11)
 
Cosmo_TT's Avatar
 
Join Date: Mar 2004
Location: cali
Posts: 1,461
Likes: 0
Received 0 Likes on 0 Posts
a huge problems with the rx7 alternators are the power wire going to the alt. a alt. needs volts to in return charge your battery and that wire on so many rx7's are corroded and that ruins all chances of flow
its not the little wires in the plug its a big wire the only big one on the alt.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
alphawolff
1st Generation Specific (1979-1985)
17
11-17-15 05:57 PM
LunchboxSA22
2nd Generation Specific (1986-1992)
37
10-26-15 10:53 AM
cam_7779
2nd Generation Specific (1986-1992)
9
08-18-15 07:48 AM
RCCAZ 1
1st Generation Specific (1979-1985)
5
08-11-15 07:05 PM



Quick Reply: car battery keeps dying



All times are GMT -5. The time now is 02:56 PM.