Question about 1995 Mercury Tracer

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Battery draw battery dies when car is turn off..alternator is good

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  • nurserynanny Jun 13, 2008

    ty for this help..greatly appreciated!! Have a nice day!

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  • 142 Answers

You most likely have a short circuit somewhere. First, inspect everything and rule out that something electrical is not left on, or an obvious wire out of place, then make sure everything electrical works as it should (if there are any discrepanies , as in dimness or intermittance, there is your short). Otherwise the only way is to check each curcuit with a meter until you find it, starting with the easiest to get to, most used, then obscure stuff like a glovebox light. If you have a charger and meter you can eliminate the circuit by removing fuses one by one to isolate that, then you still need to look at the individual components -- this is the best way to start. If you cannot find anything you need to have it checked by an auto-electrics mechanic because these can be tricky, and possibly serious as you don't want to lose your brake lights in heavy traffic on the freeway.

Posted on Jun 12, 2008

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  • 11 Answers

SOURCE: car cutting off ,battery or the alternator

i work for advanced auto
the altiniator can bee goood but the voltige regulator is bad

Posted on May 27, 2009

buffalonyman
  • 1865 Answers

SOURCE: Alternator checks good, battery checks good, after

You have a bad battery, replace it

Posted on Jun 29, 2009

  • 491 Answers

SOURCE: draw on battery when car on

First disconnect the battery overnight just to make sure the battery is not self discharging......if it's dead or down in charge while disconnected....time for a new one.
Now.....if the battery is good....disconnect one battery cable and place a 12 volt test light between the cable and the battery post the cable had just been attached to. A bright light means a drain in the car.
Your job is to remove one fuse at a time until the light dims.
A dim light is OK...clock memory etc.
Remember....a open car door is a drain......the dome light.....so keep them closed while pulling fuses.
Also....if the fuses don't show a drain......disconnect ALL wires from the alternator....there could be a drain there.
Just keep disconnecting one thing at a time until the light goes out or dims.

Posted on Aug 12, 2009

johnjohn2
  • 5763 Answers

SOURCE: Checked out car replaced battery

Theres something drawing the battery, remove the cable and seee if it dies just for a quick test, the draw is a good one to kill in one day, make sure all lights are off and the alternator is not drawing or a bad horn relay drawing , think of something that doesnt work, and walk around looking inside for lights, glove box truck, under hood light radio amp, try unhooking things but you need a tester to see when the draw goes away, i will tell you this is not easy at least it draws all the time, i have some that do this once a year thats hard to find, good luck dont overlook things, it can drive you crazy i know, take your time,

Posted on Jan 10, 2011

dttech
  • 4803 Answers

SOURCE: Battery Light On Charge Battery /

Sorry, I can't give specific information for your model because you did not mention year or model or engine size.

What I can tell you is that there is NO WAY your alternator could be testing good on the vehicle if the output voltage is less than normal battery voltage (11.0V). At this point, I must assume that you removed the alternator and took it somewhere for testing. - if this is incorrect, then please let me know how you are testing the alternator.

If you are certain that the alternator is good, check the basics. Make sure all of your battery connections are clean and tight. Make sure that your battery is good and not internally shorted or sulfated. (NOTHING works if the battery or connections to the battery are bad.)

Then you need to check wiring connections to the alternator to be sure that the alternator is receiving power where it is supposed to and ground where it is supposed to (field, stator and regulator circuits) and has a good conection to the battery. Again, I cannot give you specifics because I do not know what we are working on...

Posted on Jul 23, 2011

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the alternator will not die in one day unless there is a direct short causing diode or coil winding failure which would give signs of smell, melted wires. Disconnect battery and give full charge. what year is this? while vehicle is running you should be able to briefly disconnect positive battery post connection and vehicle will still run if alternator is good. For a new battery to die in one day, one of two things i think has happened. Either the batt is faulty from supplier,( not likely but i have seen it ) or there is a direct draw or grounding taking place whether its direct in the starter selonoid or a direct draw through accessories. Are you sure all switches are off ? Push switches (on interior lights) nothing like dome lights,delayed lights are staying on! Does vehicle start hard like it almost needs a jump. If it has to be (and it takes time). to find out what is drawing the power ( i am old school) disconnect positive power source on batt. 2) disconnect ignition power source on starter. 3) connect pos batt wire to starter, 4) touch positive cable to positive batt post and look for spark or contact. if this reacts then selonoid or starter motor is shorted drawing the current. Or if you have volt meter and know how to use it, this is good to. If checks good then hook ignition connection back on starter.(disconnect pos terminal on batt prior to re-connect) I think the battery is having the life sucked out of it by a short in the system ( A DRAW ) this could be a quick find or fix or this could take days to track down. alot of variables here to try to explain. but i would seek into the starter first as usually this drains the battery quickly .

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The car lost its gauges, power windows, rear brake lights and would not shift out of park. When they checked the alternator they said it was bad but the battery was good. Replaced the alternator,...


Check to make absolutely sure that the alternator is working, namely, turn on the lights, bright ones, turn on the radio, turn on the heater at full blast, etc, anything that draws power. If the engine badly bogs, or if it suddenly dies, you still have an alternator issue. Alternatively, might take it and have it tested.

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