new battery goes dead over night- alternator is new
2006-09-06 11:14:20 · 6 answers · asked by linda t 1 in Cars & Transportation ➔ Car Makes ➔ Nissan
Before I give you some ideas, a note for the Nissan Tec. Get some manners, it's none of your business what a person owns and if your shop was any good you would have all the shop manuels. As to the question, a little more info is needed but in general all I can give you are things you can look at. Was the car ever hit? Sometimes body work misses damaged wires or makes damage. Ck under the hood and look for mice. Remove the air cleaner cover and see if mice have made a home here. Mice love to eat the plastic that covers the wires. If you have fuel injection, with the engine off, do you hear the fuel pump running? You could have a closed relay. And by the way, theres always a small battery draw due to your clock. I presume your first trouble was a battery going dead so you replaced it. That didn't work so you replaced the alternator. If this is the case, these two parts are not the problem. Remove the ground or neg battery cable. You should have a small spark when you lift off the cable. A larger spark would indicate a heavy draw. Leave the cable off over night , then in the morning attach the cable and start the car. If it works ok the battery would be good. Next to try is the alternator. with the engine off and having a charged battery, unplug the wires at the back of the alternator. Leave the ground and the battery wire connected to the alternator. If you get a spark or hear any clicking noise, the alternator is bad. You can have an alternator charge the battery and when you turn the engine off, it can discharge the battery. This is rare but can happen. If you don't find the problem trying the above. Find a mechanic with a good electrical back ground and have him ck out your car. Mark
2006-09-08 00:52:51 · answer #1 · answered by mark w 2 · 0⤊ 0⤋
There is a way! Install a battery cut off switch. Take the battery terminal off when not in use. Secondly why are you driving a car that old? Future restoration project? ... So here is the low down hook a 12volt light bulb between the - battery terminal and negative clamp small bulb for small draw headlight bulb for larger draw bulb has to light . Remove the alternator big wire light still on put the big wire back on. Now remove fuses one at a time look at the light bulb. When you find the circuit with the drain the light will go off. The next part is tricky the age of that car makes factory shop manual hard to find to know what all that fuse powers up. Good luck
2006-09-06 22:34:59 · answer #2 · answered by John Paul 7 · 0⤊ 0⤋
Thats a large draw from the battery for it to go flat overnight, you sure about the alternator if the diodes are blown it would discharge the battery quickly? Try process of ellimination, disconnect the alternator at night and see if the battery is flat in the morning.
A standard 500amp/hour battery would take 12 hours to flatten with a 42 amp draw, headlights don't even use that much.
I'd get an auto electrician to check it out.
2006-09-06 18:28:03 · answer #3 · answered by ? 3 · 2⤊ 0⤋
Well, I had a 1990 Nissan Micra, and I had to get rid of it because as I suspect had to spend more money on what the car was worth, I think you are to throwing good money after bad, advice get rid.
2006-09-09 13:33:48 · answer #4 · answered by charliecat 2 · 0⤊ 0⤋
Have anything plugged into cig lighter? Or there is a short somewhere, or the trunk light is on all the time. Heard of that happening. Hope you get it resolved. Good luck.
2006-09-06 18:17:48 · answer #5 · answered by Silverstang 7 · 0⤊ 0⤋
no, you have a dead short......probably wiring in the lights
2006-09-09 15:12:24 · answer #6 · answered by fredyeaman 1 · 0⤊ 0⤋