1994 Acura Legend My car's battery dies overnight

MICKEYTL

MEMBER
1994 ACURA LEGEND
6 CYL
2WD
AUTOMATIC
198,000 MILES

For some reason my car just started to die after not starting the car for more than 8 hrs, especially since it just got colder. But, it always starts back up after I get a jump start and runs perfect. So I realize that it could be the battery or alternator and took it to two different auto stores at different times. Both stores agreed that I'm getting full charge from battery and alternator. I though it was my aftermarket cd player and had that disconnected, but it's still killing the battery. I only have factory speakers. I have a viper alarm that's been on the car for 4 yrs. What could it be that's causing my battery to drain?

3 Replies

DAVE H

MECHANIC
13,383 POSTS

I wuld try replacing the battery. I suspect a cell inside the batteryhas quit working. Try this and if your still losing charge overnight re-post.

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Saturday, November 22nd, 2008 AT 6:20 PM

MICKEYTL

MEMBER
15 POSTS

I've decided to wait a few more days and so far my battery has not yet drained. So I'm gonna wait until the weather gets colder and see what happens.

Also, my brother has the same acura legend as mine and his odometer and trip meter is not working. What would be the problem causing this? Let me kow. Thanks.

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Monday, December 1st, 2008 AT 1:31 AM

DAVE H

MECHANIC
13,383 POSTS

The odemeter is controlled by the VSS which is on the engine block next to the oil filter. Check fuse #22 first. Then check wiring and/or replace sensor

VEHICLE SPEED SENSOR (VSS)
Verify fuse No. 22 in underdash fuse block is okay. Speed sensor is located next to oil filter. Unplug 3-pin connector from speed sensor.
Turn ignition on. Check for voltage between Green/White and Black/Yellow wires. See Fig. 12. If battery voltage exists, go to step 5). If battery voltage does not exist, go to next step.
Fig. 12: Testing Vehicle Speed Sensor (Legend)
Courtesy of AMERICAN HONDA MOTOR CO, INC.
With ignition on, check for battery voltage between Black/Yellow wire and ground. If battery voltage exists, go to next step. If battery voltage does not exist, repair open in Black/Yellow wire between speed sensor and underdash fuse box.
Check for continuity between Black wire and ground. If continuity is present, go to next step. If continuity is not present, repair open between vehicle speed sensor and Powertrain Control Module (PCM) ground. PCM ground is located next to throttle body.
Measure voltage between Yellow/Red wire and ground. If voltage is about 5 volts, go to next step. If voltage is not about 5 volts, repair short to ground in Yellow/Red wire.
Reconnect wiring to speed sensor. Raise and support vehicle. Connect voltmeter between sensor connector Yellow/Red wire and ground. With ignition on and transaxle in Neutral, block one front wheel and slowly rotate other front wheel. If voltage does not pulse between zero and 5 volts, replace speed sensor.

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Monday, December 1st, 2008 AT 5:05 AM