Fire_Busch92

Hey Guys i Really need some help. Today i was on my way home from work and stopped at my old work to drop off a tool and bs with my old coworkers. i shut my jeep off went inside for maybe an hour. When i came out and tried to start my jeep nothing. no dash lights no dome light nothing. i went and grabbed a jump box starts right up. So i figured its gotta be the battery. Through it on the tester with the cables connected got nothing. When i disconnected the terminals i got 12 volts and 750 CCA's. So then i noticed some corrosion on the ground wires going into the terminal. so i pulled them out cleaned them up put them back. Jeep starts up. problem solved...not. I left it running while i put my tools away and just for ****s and giggles i shut it off and tried to start it again. Same thing no lights on dash no dome and no crank. So i started checking the connections for the ground going to the block and chassis. Nothing loose. left the door open in hopes that maybe if i wiggled the wire id find a short and my dome light would come on. Nope. So i Put the jump pack back on and this time i noticed when i put the negative on before i put the Positive on it sparked. It got to be short somewhere right? But where? i dont get it. i borrowed the jump pack so i can get to work tomorrow but i cant keep doing this. If anyone has some suggestions or place to start i would really appreciate it.

highmileage

Look at your starter...

Fire_Busch92

For a bad connection or for a bad starter

Fire_Busch92

Yes I got underneath and played with the wires while someone checked for lights to come on. Nothing.

Turbo X_J

It's going to spark a little regardless. Best idea connect + to + then - to the good power source & - to the engine block or suitable ground. The farther away from the discharged battery, the less the boom factor.

Fire_Busch92

The positive lead was not even on the terminal. I always put the negative on first then positive when jumping a car so I put when I put the negative on it started sparking without the positive be connected it was in my hand still not touching anything

Turbo X_J

You lost me, but good luck.

BlueRidgeMark

That's weird.

Do you have a multimeter? It sounds like you have something draining your battery, but without doing some testing, it's all just random guesswork.

If you have a meter, you can start testing different circuits to see where the drain is.

How old is the battery? They can short internally. That can drain them pretty quickly.

Fire_Busch92

The battery is only 4 months old and I tested it with an actual battery tester and it can back good. This is really weird, after I had to jump it today I was driving keeping and eye on my volt meter and all of a sudden it just spiked all the way to 19.

Fire_Busch92

And stayed there until I just it off. As soon as I jumped it again I went back to 14v

belvedere

More likely an open, I'd say. You mentioned corrosion on the wires...do you have some of those temporary battery terminals that you clamp the cables into? If so, you may have corrosion inside the insulation.


Start with disassembling and cleaning all connections on the battery cables, but you may end up needing new cables.

4.slow95

GROUNDS! This happened to me all the time with my other Jeep. It ended up being the negative battery lead. It eventually fried my alternator. Check the resistance in each lead and see what you get. Also... check the grounds. But you must remember as well to check the grounds. Did I mention to check the grounds. GROUNDS!

Fire_Busch92

Lol thanks is there any other grounds besides the one on the body next to the battery and the one on the block under the coil

BlueRidgeMark

+100


Bad grounds make crazy things happen.

EdZ

The negative battery cable is about $10... Put in a replacement cable and see if it corrects the issue... If you only had one cable from the jump box connected then it was not part of the circuit... Ya likely would find the same "spark" issue by clamping the negative battery post with a set of common pliers...