when im driving at night and i stop at a light the voltage drops and my idle drops to like 300 allmost stalling ,sometimes it will stall if i don't put some gas into it.What is the problem.In the daytine with the lights down i don't get that problem.

PS it's the battery or alternator i've resently replaced them.

 

alternator..im almost 100% positive thats your problem.

 

yeah curt, we both know that my car does that at idle Just two foot it (one on the brake, one on the gas) until you move again. The lights do flicker right? If so, alternator. The battery isn't really on much while your car is running.

~Matt

 

can't be alternator it did it with my old one and my brand new one.My ground wire from my battery looks melted a little should put a new one on.If so what kind of wire should i use

 

That doesnt mean that it cant be your alternator. Check your grounds and if a wire is melted it a good idea to replace it. Do any of your gauges bounce randomly at times? If so its your grounds.

 

i went through 3 alternators in 1 week. they kept selling me defective ones.

 

Seems kinda odd that the lights would put enough strain on the system to kill the engine.

Could it be that the headlight motors are getting stuck on for some reason, causing the constant drain?

Also, yeah, replace any melted wires. heh. Any local parts store SHOULD have a battery ground cable.

And finally, never ever assume that just because it's new that it can't be broken. It sucks when you find that to be true, but what sucks even worse is when you check everything BUT that part because you're under the impression that it's working properly. (Been there many times myself.)