I have a 89 prelude and just yesterday I went out to start my car and the battery was dead. I took out the alternator and had it tested only to show that it was just fine. I also tested the battery and it was fine also. any ideas? what could cause this?

Thanks, smash

 

Could have a ground somewhere draining the battery to the point where it can't start the car.

 

did the engine turn over at all? and the first thing you should always do is check your fuse...i learned that the hard way. And if the engine isn't turning over it could be your starter.

 

engine turns over and will run when I jump it. could it be a ground issue.

 

Sounds like a short to me....potentially time consuming problem.

 

oh god hahah

 

Try a different battery. I had the same thing happen to me before. I had a battery tested, and it tested out fine, but after running it in my car awhile, turn my car off, then try starting it again, it wouldn't start. I just got a different battery, and it worked just fine. Started up every time

 

Just like 1897's problem, sounds like a bad cell in the battery. It will test and charge fine but the cranking amps are not high enough to start the car.