Well this officially sucks. About 3 days ago I went out to start my cougar and it wouldn't start. So I flipped on my volt gauge and found my voltage was at about 10.5V instead of 12.5. So I assumed I was dumb and left something on and used a 6 amp battery charger for like a half hour until the battery was filled back up and it started just fine.
The next day I went out to see if the battery was drained again and it was and the voltage was low again. I used the charger again and it said the battery was empty and started charging. It got done charging in like minutes though and said it was done and it's supposed to take an hour or more. So I took off the charger and strangely enough, it was at 12.5V now. I tried to start it and the voltage dipped under 8V and it wouldn't start. The voltage slowly rose back in like 5 seconds up so I tried again and this time the voltage only rose back up to like 11V. And soon it was stuck at 10 again. So I figured, duh, battery. So I tried starting my car with a jump from my parent's pontiac today. It still wouldn't start. So now I'm pretty concerned.
Basically when it won't start, it makes a clicking noise and won't fire a cyllinder at all. The gauges start to move as I'm starting it. And then when I stop turning the key, all the gauges spin all the way up then all the way back down really slowly over like 7 seconds I've never seen anything quite like that but hopefully someone here has. Today I went out and my battery was registering under 8 volts and my power locks wouldn't even work. Like I said, we tried jumping it and my voltage read 14 before I tried starting but it still just clicked. Oh and it happens to be about 0 degrees out so it's kinda cold if that has anything to do with it. And no, it's not out of gas.
I'm thinking it's probably not the battery cuz it's an aftermarket Duralast Professional series that was added by the previous owner and those are really good plus I had it tested a month or two ago and of course it came up as "replace" but I read the stats and it really wasn't that bad. 700 amps out of 960 and full voltage seems fine to me.
So far I did tighten the battery terminals cuz I've seen that problem before and that didn't help. I didn't put any Heet or other isopropyl alcohol product in my fuel and hadn't started my car for days so it's possible the fuel lines froze but I did add some Heet yesterday and it obviously didn't help. If it was the fuel lines then why is the electrical all whacked? And then why did it start after charging the first day I had the problem if it was the fuel lines. The same thing could be said with the ignition thingy too cuz it that was broke, it wouldn't start after charging. And if it's my battery, why didn't my car start when jumped? Or is it something else that's wrong? this is driving me nuts