when i hit the brakes my lights completely shut off for a split second, the same happens if i hit the turn signals ect... when i shut my car off and try to turn it over it wont. i checked the battery with a dvom and the battery readys 12.6 volts, im totally confused, i have been under the car and cheked connections at the starter and everything. please help

 

what does your alt put out? is it slipping?

 

well its not my alternator because my batter has a full 12 volts after i shut the car down, but once its off if i turn they key on i get no power to anything

 

maybe your grounding isn't as good as it used to be.


Gil

 

are wires on your main fuse box loose?

 

are u talking about the block witht he 80a main? cause i did chek that and made sure it was tightened then and checked the other clips that go in the bottom of that, and everything from tthat down to where it runs into the harness is connected

 

i did relocate my battery a while back, but that shouldnt have anything to do with this problem i dont think

 

ooooohhhhh... then i would assume your grounds then... i had a problem finding a good ground for my battery in the back

 

where do you have it grounded?

 

Does your alt warning light come on when you hit the brakes?

You need to get a meter on the battery posts while she's idling and tell us what you're getting, too, that's a good way to figure out what kind of shape your grounds are in...

 

I've had that problem before when it was a poor ground, but I actually had a similar problem again and the battery was toast.

 

It's probably one of your grounds, which I'm sure someone already mention. Happen'd that last with me and my buddy in his 90 silverado, it would loose power when he let off the gas. It was a main ground that came off.

 

Im betting its the regalator....send me a pm if im right :P

 

neevermind sounds more like what "HE" said

 

Shut off means nothing... it should be 12.6 volts with the engine not running.

The important part is when the car is running... what is the voltage then, and then with the brake pressed.

Should be at least 13.5 volts with the engine running at any time (even with the lights on and the brakes pressed).

If it is not, then you have a bad alt or poor grounds.

 

I had the same problem and turns out it was the ground. if it's in the back, then run a wire to the tranny, as a ground. AT least a 4 gauge.

 

When you relocated your battery......where did you put the ground from the battery? To the chassis? Or to the engine? Or both?

The factory battery ground wire connects first to the chassis then to the starter bolt on the transmission/engine using the same cable. Or both chassis AND engine, if you follow me.

 

i grounded it to the lower seat belt mount, i got it taken care of, the wire into negative terminal were coming out and i couldnt see because of the isulating electrical tape, i also sanded the seatbelt mount . thanks anyways tho sorry for wasting ur time

 

Your not gonna admit it was just a battery?