Question about 2002 Mercury Mountaineer

3 Answers

I have a Mountaineer that has battery problems. The battery will discharge for no reason. The dealer has installed a new alternator and three batteries over the past four months. The battery will not even take a jump start. The dealer has sugested that we sell the vehicle. They have told us that they can't fix it and will no longer install a battery. Please help, Steve R.

Posted by on

  • sromey Jan 02, 2011

    Your solution has already been tried. The Mercury dealer had the car for three weeks so the tech could test drive it. It was fine for three weeks and the one morning the new battery was so dead that it had to be replaced. I have removed the fuse for the heated seats to see if that is the problem. The battery has also gone dead while driving and left my son stranded on the road side. And my wife has informed me that the Mercury dealer has replaced the alternator twice, not once. Thanks, S. Romey.

  • sromey Jan 03, 2011

    Just like the local Mercury dealer, your expert is clueless. Thanks for trying. Steve R.

×

3 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Expert
  • 4,070 Answers

Hi and welcome to FixYa!

That's sad to hear specially coming from the dealership. I suspect that there's a grounded wiring somewhere and a good auto electrician can be helpful to trace it out. There's no way it can't be fixed, there's always a way. If there are no electrical faults then I strongly suggest that you replace the car's computer.

The computer itself can be faulty which may cause electrical failure to the car. Without knowing that the charge is not holding up. Computer replacement is one good thing to consider and I believe you'll be good after the procedure.

Hope this helps and thank you for using FixYa! Have a good one!

Posted on Jan 03, 2011

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 4,044 Answers

You have something grounding that shouldn't. Check the Positive battery cable all the way to the starter. Most likely there is a worn spot somewhere. If that is in good shape, check the wires that go to the alternator, especially any that may be near the motor or belts. If you have an After market alarm installed disconnect it if you have one of those "Thumper" amplifier or boosted power stereo systems installed that has that wiring in the engine compartment disconnect it, essentially anything that has been added should be removed, this includes LoJack if you have it. Once all the add on stuff is removed check the battery for drain. Once you have isolated where the problem is at you can put things back one at a time until you locate the actual problem device or problem circuit. You will need a Multi-meter, about $10 at Walmart to test continuity and voltage. Unfortunately this also includes any vehicle DVD devices or Navigation systems as well.

Posted on Jan 03, 2011

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Mercury Master
  • 22,133 Answers

Try to find why its discharging ?? firstly disconnect the two wires on the alternator ,and leave overnight to see if battery goes flat ,its a simple process of elimination

Posted on Dec 31, 2010

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
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.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I have a 2004 lincoln navigator v8 and I just replaced the alternator and the wiring harness but the battery keeps going dead any idea what it is


batteries can self discharge from internal failure and this can be checked by a battery load test
it may prove that replacing the alternator was not necessary
however on some units
there is a diode that stops the battery discharging back through the alternator when everything is off
wrong battery terminal installation or flashing will damage the diode
best now to have the reason for the discharge investigated by ab accredited auto electrician starting at the battery

May 13, 2016 | Lincoln Cars & Trucks

1 Answer

I have a 2003 ford focus wagon second hand. My battery died out and I thought the alternator was the problem. Brought my car to an alternator repair shop and they said the alternator is still good. I ended...


Lead acid batteries don't like being discharged flat, and it could now be damaged and unable to hold a charge. It does sound as though the voltage regulator part of the alternator is allowing discharge to ground when it should not. You would seem to have a good warranty claim on the battery given they did check the alternator and pronounce it OK.

Nov 04, 2013 | 2003 Ford Focus

2 Answers

2005 Cobalt 2 new alternators plus new battery in 1 week battery light just came on


If you paid the dealer to diagnose the problem, I would take it back and tell them to test it again on their dime.
You may have a problem in the wiring or other component in the car that is not letting the alternator charge the battery.

Dec 13, 2012 | Cars & Trucks

3 Answers

Four new batteries fitted since new - car 3 and half years old 13800 miles since new. dealer keeps fitting new batteries. cannot find fault - cannot trust this Hyundai i30. Writing to Hyundai - was in...


Muriel-sounds like you do not drive a lot, so that is probably causing a problem with your batteries-a battery is like a water tank, it starts out full, and it drains when the car is not running due to loads imposed on it by the radio memory, computer memory, and other things. If the drain is long enough (car sits) the batteries' ability to 'recharge' is diminished due to the conventional construction of a standard battery. A normal car battery can only be discharged a few times and come back-if you do a lot of short trips, and it sits long period of times, that is brutal on a CONVENTIONAL lead/acid plate battery. You should seriously consider getting a deep cycle battery-they are usually used in Marine enviornments, but can be used in cars (I have an Optima Yellow top in my Jeep, it is not driven much, and sometimes is only used for short trips). While these batteries are pricy can be found for about $200 or less) they can easily last 8-10 years and they car be fully discharged hundreds of times and they come back fully when recharged-ideal for your circumstances.

this is assuming the dealer knows what they are doing...after the car sits overnight, the battery should read 12.5 volts. when first started. it should read close to 15 volts at the battery AND at the large post on the back of the alternator-it should gradually drop down to around 14+ volts, and should stay close to the even with the lights and heater fan running ar full blast. if it is doing this, your driving circumstances dictate you get a battery more suited to you driving habits.

Apr 13, 2011 | Hyundai Accent Cars & Trucks

1 Answer

The battery on my 2000 Porsche Boxster is dead and the car is locked. How do I access the interior to release the hood?


The easiest way is to buy a cheap battery charger, one that plugs into your cigarette lighter socket. Allow the battery to charge for a few hours and then release the trunk when it has come up enough. The most likely reason for your battery going down is a faulty alternator. I just went through this problem with a friend. He bought a new battery and it went flat over night. He replaced the ignition switch (common problem), still went flat over night. Even though the alternator was charging great when the car was running, it was drawing current when the car was parked. We ended up getting a brand new alternator off ebay for $135., the dealer wanted $1900., local parts stores about $500.
The alternator was pretty easy to install and it solved the problem.

Jan 23, 2011 | 2000 Porsche Boxster

1 Answer

2004 mountaineer. battery dies if not run for two or three days. battery and alternator checked and found ok. something is draining it, any ideas?


You basically said it. Something is probably draining the system. Disconnect the positive lead off the battery and then connect a amp meter in between that lead and the positive post and check the reading. If your over 100 milliamps you have something drawing power somewhere.

Jan 03, 2011 | 2004 Mercury Mountaineer

3 Answers

Battery light went on and the vehicle died under way 20 minutes later.


If the Power steering and everything else seems to work the problem should be in the Alternator or Battery. Check your Battery cables for loose or dirty connections.

If you find the Battery cables were the problem, you need to recharge the Battery. A jumpstart may get you going, but the Alternator is meant to keep up with the current electrical demands and it will take a long time to fully recharge the Battery.

Autozone and Oreillys can check the Alternator and Battery if they are carried in, or on the car. Since the Expedition is dead, you can take in the Battery for a recharge and testing. This will keep you from needless work removing the Alternator if only the Battery was bad. If the Battery tests good after the recharge, then your only remaining option is to remove the Alternator for testing. Should both the Battery and the Alternator test out good, you have a major electrical malfunction. You will need an electrical shop.

Jun 03, 2010 | 2001 Ford Expedition

3 Answers

Headlights go Dim


Hi

Check your alternator belt tension, if its ok, all connections behind alternator are good.

If the problem is still there, a new, or reconditioned alternator, seems the only answer !

Good Luck !

Please give me a Fixya Rating.... I need to be a Guru !

John.

Feb 04, 2009 | 2003 Honda Accord

Not finding what you are looking for?
2002 Mercury Mountaineer Logo

Related Topics:

189 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mercury Experts

yadayada
yadayada

Level 3 Expert

75807 Answers

fordexpert

Level 3 Expert

5495 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22133 Answers

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

Answer questions

Manuals & User Guides

Loading...