Question about 1995 Buick Regal

1 Answer

I have a short somewhere and it drains the batterry if I leave it on overnight If I disconnect the battery overnight it starts right up in the morning

Posted by on

  • 3 more comments 
  • burmanville Apr 21, 2009

    Already tryed that9 disconnected the alternator wires battery was dead in the morning Just bought a new battery yesterday

  • burmanville Apr 23, 2009

    a volt meter of test light is that one of them things tha us use to check for electricity in a wall plug if so i have one

  • burmanville Apr 26, 2009

    The fuse is #3 Passenger side Underhood The manuel says it is for Powertrain Control Module (PMC), Fuel Pump/Oil Pressures switch, Feul Pump Relay, Fan Control#1 Relay

  • burmanville Apr 28, 2009

    When I take fuse#3 out the light stays on, with all the rest of the fuses in

  • burmanville Apr 28, 2009

    When i leave the fuse out and all other fuses in the light stays on



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Buick Master
  • 1,000 Answers

When you disconnect the battery cables, do you disconnect both or just the negative and how old is the battery. Sulfated cells in the battery will cause the same condition.

Most of the time the culprits are the glove box light or trunk light left on. However the light dimming module should turn them off after they have been on for 20 minutes or so on your vehicle.

I would start by disconnecting the wiring at the alternator and let it set over night and see if it starts in the morning.

Posted on Apr 21, 2009

  • 2 more comments 
  • Bruce Bracey
    Bruce Bracey Apr 21, 2009

    OK, we can rule those out.

    Do you have a volt meter and or test light?

  • Bruce Bracey
    Bruce Bracey Apr 24, 2009

    If you have a 12 volt test light (it must be 12 volt) you can disconnect the negative battery cable, put the test light between the battery negative and the battery negative cable ( in series) and you will see the test light come on.

    Start removing (1) fuse at a time until the test light goes out. When the light goes out, record the fuse name and let me know. We can start diagnosing from there.

    Good luck, let me know.


  • Bruce Bracey
    Bruce Bracey Apr 26, 2009

    The PCM will usually have a small parasitic drain on the battery. Leave that fuse out, with all other fuses in fuse box, does the light stay out?

    Let me know.


  • Bruce Bracey
    Bruce Bracey Apr 28, 2009

    Pull all fuses out. Insert one fuse at a time and record any that the light comes on then remove that fuse and go to the next.

    Did you remove the fuses from the under hood fuse box only? There is an interior fuse box located in the dash.

    Let me know.




1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Battery checked and holds its charge when earth lead and live lead connected the battery will go flat overnight

Something is being left on to drain a battery that quickly, or the system has a dead short in it somewhere. The only drain should come from the alarm system and chronometer in the radio to keep the time correct. That will only drain a battery in about 6 months of not being charged from engine running. I've found the easiest way to check if anything else is still draining power is at the fuse box. With switch off, test each fuse to see if there is still power on them. Then pull the fuse that is still powered and see what isn't working now and the grounded system will show itself. Just leave that fuse out overnight and see does the battery drain down. if not, go thru that system and find the short or faulty unit it's connected to. I always go directly to the grounds to fix problems if something isn't working, yet with your situation, the ground is causing the problem the other way. Something is still connected that shouldn't be.

Aug 17, 2017 | Cars & Trucks

1 Answer

1990 dodge caravan,won't keep a charge. Already changed alternator and battery

Either something is draining power from the battery with the key off, or the battery has an internal short.
Have you checked to see which problem exists by leaving the battery disconnected overnight ?

Jun 15, 2015 | 1990 Dodge Caravan

1 Answer

How do I stop batterry going flat when i don't drive my HyundaiIx35 for a week

There is only 2 reason for this to happen:
1. The battery must be in bad condition, in which case you should have it check up and if needed buy another one.
2. You car could have a short, meaning that probably there is a positive cable live touching the ground of the car. Therefor leaving your battery flat.
To troubleshoot and find out if it's a short, whenever you are to leave you car without a use for a week, just disconnect the positive cable of the battery, after a week, put it back on the terminal and start your car, if it start, then it's probably a short.

Mar 31, 2015 | 2011 Hyundai ix35 2.0

1 Answer

Battery being drained over night

Check to be sure that your hood light is turning off when you close the hood. Seriously. (Common problem.)
Remove the bulb from the hood light to see if the problem persists. If the battery no longer drains, replace the hood light assembly.
Also, run the car for a short while, then turn the car off. Leave the car off for an hour, then feel the back of the alternator. If it is hot, the diodes are bad in the alternator.

Jul 17, 2014 | 1999 Ford Explorer

1 Answer

Battery draining overnight,replaced with new battery now starting

Disconnect any one of the cable from battery (either + or - ) and in series with battery connect a 12v bulb of low wattage say 5w or 10w. By connecting in series I mean one wire of bulb goes to disconnected battery cable and the other wire to the terminal of battery from where you disconnected the cable.

Now observe the filament of bulb, if it glows then your battery is draining due to short in your vehicle electrical system. You need to locate this short circuit and fix it, otherwise your new battery would also drain.

Let us know what you found out.

May 05, 2014 | 1990 Ford F150

3 Answers

Battery drajn

I can't come and diagnose your car, but there are 2 things that might help.
First, if you will disconnect your battery each time you are finished driving your car, the battery will not drain overnight. You will need to re-connect it to go somewhere.
Second, there is an electrical item that is turned on, that is not turning off, or, there is a short in your electrical system.
When, in the morning or whatever, you hook up your battery, if there is a spark of any size at all between the battery cable and the battery connection, you know there is a short or something left on.

Jan 17, 2013 | 2001 Buick LeSabre

1 Answer

My cobalt will start up all day long, but when it sits all night and i try to start it in the morning, it wont start...i have to get a jumpstart from my neighbor..there is nothing left on..the battery in...

Welcome to Fixya

Test the battery using a voltmeter. You should be getting at least 13v up. If you dont have that reading then the problem might caused by a battery that is not holding charge and need replacement or something is draining the battery. If you can borrow a battery, test it to your car and leave it overnight. If the battery drains, then there is short somewhere.

Thank you for using Fixya!

Aug 01, 2011 | 2005 Chevrolet Cobalt

2 Answers

New starter, alt, and battery but battery drains over night boost car and runs all day next day no start. manual transmission so i roll down hill and it starts but not when battery is totally dead

there are not a lot of computers that could be causing the drain, so baring any aftermarket accessories you should start searching for an indirect short to power

prop hood and leave the doors open... this is important because you do not want to wake the computers once you start your test

next, unplug the negative battery cable and insert a DVOM in series

drain should be less than 80mA after 30-90 minutes

if drain is higher, start pulling fuses until the drain is isolated

Apr 06, 2010 | 1987 Ford Escort

1 Answer

New battery, new alternator, new starter. Battery

Something is draining the battery most likly a short somewhere in the electrical system. You will need to have it looked at by the garage to find the short A temporary or cheaper solution may be to disconnect the battery when not using the car. You can either fit a switch inside the car or physically disconnect it at the battery.

Oct 16, 2009 | 1995 Nissan Altima

Not finding what you are looking for?
1995 Buick Regal Logo

Related Topics:

196 people viewed this question

Ask a Question

Usually answered in minutes!

Top Buick Experts


Level 3 Expert

76846 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Buick Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides