Question about 1999 Mercury Sable

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Battery drains in about a day while car is not on, not battry, not alternator, mechanic says both are good. traced drain to fuse panel junction fuse but not sure how that helps

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Disconnect one fuse every night with a fully charge battery until you have a fully charged battery the next morning or take it to a repair shop
Electrical shorts are tough enough to find if you are not a trained mechcanic

Posted on Sep 19, 2011

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1 Answer

The IOD is pulling 2 amps n draining battery over night. What can I do to correct the problem???


Testing for Battery Drain - Randy's Repair Shop

randysrepairshop.net/testing-for-battery-drain.html
Instructions for measuring automotive battery current drain. ... Excessive current drainwill usually result in the battery running down overnight or within a few days. ... Many digital meters have a 2 amp internal fuse that may blow if multiple ... If pulling fuses and circuit breakers doesn't stop the current draw, you'll need to look ...

How do you trace a drain on the battery of your car with an ...

www.instructables.com/.../How-do-you-trace-a-drain-on-the...

InstructablesApr 13, 2011 - I know this is an old question, but I that if the battery cable is not clean or .... I wish I could find one of those 14.4 Vdc 2 Amp solar chargers. ... be to pull a different fuse every night (not the ones which would require factory help ... As others have pointed out, the LED will not drain a good car battery overnight.

Diagnosing A Car Battery That Runs Down

www.aa1car.com/library/battery_runs_down.htm

Jan 05, 2016 | Cars & Trucks

1 Answer

Hi, can the junction box /fuse relay panel drain battery? According to the instructions from the internet I checked the collection of individual fuses in the engine compartment and the two had fuse 22, 25...


No it will not drain your battery unless what ever the fuse is protecting has a direct ground allowing some power to flow to it when the car is not running...most times if the battery continues to drain when not running is due to a sticking voltage regulator built into the alternator..Most any of the auto parts stores will check your charging system for free just tell them what your car is doing..My bet is alternator...good luck..

Mar 04, 2015 | 1998 Lincoln Navigator

1 Answer

No turning signals


more than likely the turning signal module is shorting out and needs to be replaced or the harness connecting to it is shorting out hence the drain.. To stop the drain remove the indicator fuse and relay from the fuse box under the hood. This will also prevent an electrical fire and get this looked at asap. from a trained professional... I would also recommend you remove the negative battery terminal.

Dec 30, 2012 | 1991 Ford Escort

1 Answer

2003 mustang gt drains battery in 2 days


03 Mustang GT (Parasitic) Battery Drain Fix
welcome.gif
Hello,
I am seeing a lot of mustangs are having battery draining issues and I wish to share some simple solutions found while working on a friends 03 GT 4.6ltr.

In a quiet area, key switched off, hood up, Listen carefully close to alternator. I heard a high pitched hissing/whistle sound at low volume, came from back of alternator. This sound was the voltage regulator/rectifier staying on when key is off due to faulty diodes inside the voltage regulator/rectifier circuit, can cause battery to go dead after car not ran in about 2-7 days.

After having the alternator tested free at a parts store, test showed alternator was good because the faulty diodes in the alternator did not show up on the test, the machine did not test for faulty drain back issues that were present.
Alternator on-car-fix:

There was battery voltage running at all times through the two-wire connector on back of alternator. Disconnect the battery first for safety and to reduce chance of short circuit. The yellow wire/with white stripe is hot while car is off so I traced this from the 2-wire connector on the alternator then closer towards driver side front fender. Next I cut the Yellow/White Stripe wire, spliced a good connection wire to it and ran it through a hole in the fire-wall to the fusebox(under dash), connected it to a 15a fuse that does not get used but has power when key is turned on but no power when key is off.

The purpose for re-routing the hot wire to the alternator, is to turn off the alternator charging circuit when the key is turned off so it may not run down the battery. I am seeing good results with this fix(or patch) so far. No More Parasitic Battery Drain!

Another fix can be to change the small pulley on the alternator to a larger pulley so the alternator does not spin too fast, putting too much energy through the diodes can cause a charging system to act a fool. So if you have charging issues and have an alternator changed, putting a larger pulley on can make sense turn into saved dollars(especially on high revving engines).

I hope this info helps to solve some draining battery and/or alternator issues.

thanks.gif for reading,

TyBorg1

Apr 12, 2012 | 2003 Ford Mustang

1 Answer

New battry keeps running down


If your battery runs down when the car is off and not running, then you probably have a 12volt drain
killiongthe battery. If your problem occurs even when the car is being driven and used, then your alternator may be the culprit, it may not be charging enough. Attach a voltmeter across the + and - battery terminals. Start the car and let it idle without any accessories on. If you get a reading somewhere between 13.75 - 14.75 volts, your alternator is ok.
To check for a 12volt drain, disconnect the negative battery terminal and slowly scrape it on
the negative battery post 3-4 times. If you see any light to medium sparking as you do that, you probably have a 12volt drain killing the battery. BTW, don't be afraid of being shocked, no chance of that. This is extremely light voltage we're taking about here. Any 12volt drain is best left to a professional to trace down. Oh yes, a defective new battery is possiblity, but highly unlikely.

Sep 28, 2011 | 1998 Chrysler Sebring

2 Answers

My car battery keeps getting drained. what is draining my battery.


Are you sure that you have a problem with something draining the battery, or do you have a problem with the alternator not charging the battery? I would have the alternator tested to make sure of that before spending hours and hours troubleshooting electrical problems.

Basically, to check a problem like this you will need a clamp on amp meter. Then you pull fuses from your fuse panel and see where the drain is. Make sure you have a good layout of your fuse panel and fuse sizes (a digital photo is also a good idea) before starting, so you don't introduce problems.

Jun 26, 2011 | 2000 Volkswagen Jetta TDI

1 Answer

My 1995 Taurus Ghia has a constant current drain (leak) of ~ 1A. Temporarily removing fuse #2 (Juction Box) fom the Engine Bay box, reduces the drain to ~ 0.02 A. Removing fuse # 27 (battery saver) from...


Hello, Seems you have done some good work in tracing the problem. It could be a bad Diode in the Alternator, disconnect the plug on the Alternator and see if the Voltage drops(engine off). But the tracing of the problem to the Power Window circuit and Interior lights merits further action.

You need to disconnect the Window motor, switches and so forth until you find the grounded part. There were some soldering issues in the Window motors when they were manufactured. The Drivers door has the additional Relay inside if you have the Auto-power feature

Your Battery needs to be fully charged and showing 13.2V-13.6V or the Battery is weak. Ford Anti-theft can even interrupt the Alternator from charging while you are driving. The Battery should be checked, but of course you still have the grounding issue which ran down the Battery for maybe Years.

I hope you found my solution very helpful in solving your problem.

Apr 13, 2011 | Ford Taurus Cars & Trucks

1 Answer

Our 1997 Wrangler has something draining the battery, but not all the time. We've had it to two mechanics who found nothing wrong and it started for them every time they tried. It works for days or weeks...


INTERMITTENT BATTERY DRAINS ARE HARD TO FIND. TURN OFF ALL SWITCHES IN THE VEHICLE. MAKE SURE THE GLOVE COMPARTMENT LITE IS GOING OUT. OPEN THE HOOD. CLOSE ALL THE DOORS. MAKE SURE ALL OF THE COURTESY LITES ARE GOING OFF. DISABLE ANY UNDER THE HOOD LIGHTS. REMOVE THE NEGATIVE BATTERY CABLE. USE A 12 VOLT TEST LIGHT, FASTEN ONE END TO A GOOD GROUND, { METAL PART OF THE MOTOR} . FASTEN THE OTHER END TO THE NEGATIVE TERMINAL OF THE BATTERY. IF THE TEST LIGHT LIGHTS UP THERE IS A BATTERY DRAIN. IF NO LIGHT , NO DRAIN. IF THE LIGHT IS ON LOOK IN THE FUSE/RELAY BOX NEAR THE BATTERY. PULLOUT THE FUSES, LARGE & SMALL ONE AT A TIME, IF THE LIGHT STAYS ON PUT THE FUSE BACK IN TRY THE NEXT FUSE. WHEN THE LIGHT GOES OUT, THAT IS THE CIRCUIT CAUSING THE DRAIN. IF IT NEVER GOES OUT, DISCONNECT THE ALTERNATOR. IF THAT MAKES THE LIGHT GO OUT, THERE IS SOMETHING WRONG WITH THE ALTERNATOR. IF THE LIGHT IS NEVER ON, YOU MAY HAVE TO DO THIS ANOTHER DAY TO FIND THE DRAIN. ALSO HAVE THE NEW BATTERY RECHECKED.

Jan 12, 2011 | 1997 Jeep Wrangler

1 Answer

I have a 1989 F-150 with a hidden electical short. The battry is drained if I leave it connected for 2 days or more and don't drive the truck. I found a similar question here, the response was to...


HERE IS HOW TO CHECK FOR A BATTERY DRAIN. TURN OFF ALL SWITCHES, MAKE SURE THE GLOVE COMPARTMENT IS CLOSED & THAT THE LITE INSIDE IS GOING OUT .RAISE THE HOOD, DISABLE THE UNDER HOOD LIGHT. CLOSE ALL THE DOORS TIGHT. MAKE SURE ALL COURTESY LIGHTS ARE GOING OUT. GET A 12 VOLT CIRCUIT TESTER, { A SEE THROUGH ICEPICK WITH A LIGHT INSIDE }. REMOVE THE NEG BATTERY CABLE, PUT ONE END OF THE TESTER ON THE NEG BATTERY POST. PUT THE OTHER END OF THE TESTER ON A GOOD GROUND. IF THE TEST LIGHT LIGHTS UP THAT SAYS THERE IS A BATTERY DRAIN. IF THE LIGHT IS ON. START PULLING FUSES ONE AT A TIME FROM THE FUSE/ RELAY BOX NEAR THE BATTERY. WHEN THE LIGHT GOES OUT THAT IS THE DRAINING CIRCUIT. YOU MAY WANT TO DISCONNECT THE ALTERNATOR. ALTERNATORS CAN CHARGE THE BATTERY WHEN THE MOTOR IS RUNNING & IF SOMETHING IS WRONG INSIDE THEY CAN DRAIN THE BATTERY WHEN STOPPED OVERNIGHT.

Jan 09, 2011 | 1989 Ford F 150

1 Answer

2000 jetta has multiple alternator and battery failures


In my case, the instrument cluster was bad, causing the MFI display and radio to go haywire and putting a contstant drain on the battery. $760 to have the VW shop replace it. No problems related to the battery or alternator have occurred since.

Good luck.

kendaknapp@aol.com

Mar 16, 2009 | 2006 Volkswagen Jetta

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