Battery drains intermittently
#1
Junior Member
Posts like a Ricer Type-R
Thread Starter
Join Date: Oct 2008
Posts: 24
Likes: 0
Received 0 Likes
on
0 Posts
Battery drains intermittently
Ok I've almost pulled out the rest of my hair, I'm almost bald anyway. I have a 1988 Bonneville SE. 3.8L V-6 engine code C. Automatic transmission with 185,000 miles on it. PDL,PW, cruise, a/c, power moon roof, remote trunk release, after market radio, etc. My battery will drain down maybe a few tenths of a volt one night, say from 12.5 down to 12.33. After the second or third day of not driving the car, the battery may read 7.49V. Its sitting in my garage and it just drains. The battery is great, 3 months old, specific gravity is fine. The alternator is new, thought that was the problem at first, cables look good. I disconnect the battery every night during the week since I need to drive the car to work. It runs fine and accelerates great. It does seem to be running a little rich though and wants to die at stoplights if I stop too suddenly and don't let the rpms slow gradually. Any ideas would be greatly appreciated since the wife drives it also and I'm getting a lot of static about the car not running right. Thanks, Gary
#2
See, "1995 SSEi, Electrical Completely Dead" above. I found diagnosed my problem by pulling fuses one at a time and watching the draw on my battery charger. Wasn't a real high tech approach, but it did solve the problem.
#3
Retired Senior Admin
Expert Gearhead
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Likes: 0
Received 28 Likes
on
24 Posts
As stated, that'* a good way to track down the problem. Once you find the fuse or relay that'* causing the drain, you can then zero in on the problem and correct it.
Do you have any after market things in the car, radar detector, alarm, remote starter, etc?
Do you have any after market things in the car, radar detector, alarm, remote starter, etc?
#5
Retired Senior Admin
Expert Gearhead
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Likes: 0
Received 28 Likes
on
24 Posts
Do you have a ELC Electronic level control, on your car? I've heard of those sticking on. Try pulling a fuse or 2 when your going to let it sit a day or 2. If the voltage does not drop then you have helped narrow down the problem.
#6
Junior Member
Posts like a Ricer Type-R
Thread Starter
Join Date: Oct 2008
Posts: 24
Likes: 0
Received 0 Likes
on
0 Posts
battery drain
No ELC on this car. No power antenna either. Replaced it with a regular non electric one. I will check the electrical connectors though. How would I check out the rear window defogger? I do have a AC/DC clamp-on ammeter though. And a multimeter too.
#8
Senior Member
True Car Nut
The other thing to check is to have the battery load tested. You might have a cell going bad. I had an electrical issue in a Bronco II that drove me nuts...pulled fuses, multimetered circuits, pulled bulbs, etc. Finally the battery died and I replaced it - never had an issue after that. Since....load test the battery first, then work the circuits - especially if you are having an intermittent problem.
#10
Junior Member
Posts like a Ricer Type-R
Thread Starter
Join Date: Oct 2008
Posts: 24
Likes: 0
Received 0 Likes
on
0 Posts
Thanks for all the help. Recently, I've left the battery cables hooked up all week and the battery is fine. I don't know what the problem is/was. Still worried the battery will drain and I will be stranded but I carry jumper cables anyway.
Thread
Thread Starter
Forum
Replies
Last Post
cheri_marie
Everything Electrical & Electronic
6
01-13-2010 05:02 PM
88bonnsse
Everything Electrical & Electronic
12
01-13-2008 09:16 PM