battery drains overnight after a jump new battery in car altenator a possibility


Asked by seddy76 Sep 27, 2012 at 06:58 PM about the 1998 Chevrolet Lumina 4 Dr LS Sedan

Question type: Maintenance & Repair

9 Answers

Austin Barton

If your battery is draining over night with a new battery chances are its not your alternator. it sounds more like you have a draw from the battery. any aftermarket electronics can cause this issue. best way to check is when the battery is charged with everything off use an ammeter. if there is any amperage going from the battery then you have something left one drawing power and draining your battery

2 out of 2 people think this is helpful.
John Saffrahn

Do exactly as Austin said and to go further pull fuses one at a time till it quits

1 out of 1 people think this is helpful.
Wayne Ronholm

You need to check for a draw. check all ground wires. this is not a alternator problem

Matthew Yapp

All of you are wrong. I own a 97 lumina ls. I had the EXACT same problem. It was my alternator ground wire. They have a tendency to vibrate loose if not completely tightened. If put a latex locknut on mine and fixed the problem.

2 out of 2 people think this is helpful.
John Saffrahn

#1 latex is a rubber which makes it NON-conductive. #2 the alternators shell is a ground. There is no ground strap it grounds directly through the housing to the bracket to the engine.

1 out of 1 people think this is helpful.
Matthew Yapp

Right . Yes latex is nonconductive. Thats why I chose that style locknut. It was arcing and it prevents a short to the block. But the ground strap comes off the stud in the case and into the block. Loose stud or nut, Instant battery draw. Because of through air transmission, the battery is beint drawn down and the amperage necessary to recharge is lost. I know the tech. Degrees in auto tech and aviaion maintenance.

Matthew Yapp

Most of the time, like you said, check ALL connections. Then start pulling fuses and relays. Aftermarket equipment just increases load


I had a 2001 Chevy Lumina and the parasited draw was from the radio I had installed. It was still running even with keys out. Battery would last two days when jumped then die. This is a slow drain. Some take up to a week to kill your battery. Had radio wiring redid and no more draw.

Eddie Carter

My battery drain overnight on a 1999 Chevy lumina

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