Question about 1999 Mercury Grand Marquis

1 Answer

Battery on my 1999 Grand Marquis went dead a few months ago. There was no indication of battery losing its charge. The battery light never came on. I replaced the battery and things worked fine for a few months and then this battery discharged, again no idiot lights indicating any problem. What may be connected to problem is that a couple of times the digital speedometer started showing 0 when in fact the car was going at 40 mph. One other thing, there is a squeaking which has started; cannot tell where it is coming from, but at times it gets very loud and sometimes turns into a chatter. Could all of these symptoms be the alternator? or what? Thanks, Jim

Posted by on

Ad

1 Answer

  • 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
  • 3,911 Answers

Well the way I approach these situations, regardless of the make, is to get an ammeter in line with the positive cable and the positive battery terminal. With the ignition off there should be a very low current drain to keep the clocks, theft stuff, and door lock remotes (if equipped) enabled. So with the ammeter in place pull one main fuse after the other and see which fuse's removal causes the current to fall to a very low level. Now see what doodads are on that fuse and disconnect them one at a time until you have disconnected the feature which causes the current drain to fall down to nearly nothing. That is your bad guy. Usual suspects are trunk and glove box lights, power door locks, air ride suspension pumps, and the electrics which turn them on and off. Good Luck

Posted on Aug 04, 2010

Testimonial: "Thanks wekjo. That would be a good starting point."

  • jrschnei Aug 04, 2010

    I should add that the 2nd time the battery went dead was when I was driving the car. First the dashboard lights went out completely and then I started to lose power. A beeping started also. I was just able to limp the car back home. The car would not restart after I parked it, although it started the next day when the battery recharged a little overnight.
    Also, the first time it did not start was in the morning, but I checked and the interior lights were off and the headlights were not on either.

×

Ad

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

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Battery drains


Assume you mean drains of power not fluid. Does battery light show on dash with engine running. Make sure that the alternator drive belt is correctly tensioned (longest side betwen pullys move 1/2" up/down). If it takes a few days to loose charge temp fix is to use a solar battery charger that can charge battery when car is parked. Hope this helps.

Aug 13, 2016 | Mercury Cars & Trucks

1 Answer

How to reprogram the computer on a 1999 Grand Marquis


You cannot reprogram the computer. You have to replace it. Load test the alternator. If a diode is bad it will charge the battery at a slower rate but will still light the battery warning light.

Dec 18, 2015 | 1999 Mercury Grand Marquis

1 Answer

I have a 1995 Jeep Grand Cherokee with a 4 month old battery.A couple of the power door locks quit working a while back and my husband went out a couple of days ago and sprayed them with WD 40 but they...


check the voltage on the battery with a volt meter, it should be around 12.6 to 13 volts, if not charge battery with a charger, after charge try to start vehicle, if the vehicle starts use your volt meter at the battery again, the voltage should be around 14 to 14.5 any lower and the battery isn't being charged and the alternator should be checked and or replaced to solve the problem..

Feb 28, 2011 | 1995 Jeep Grand Cherokee

2 Answers

I was told the alternator was bad and drained the battery. I changed both and the battery was dead the next day. 1998 mercury grand marquis


assuming the repair was done correctly the you need to clean/repair the battery connections this should fix ya
hope this helps.

Jul 15, 2010 | 1998 Mercury Grand Marquis

1 Answer

Dead Battery Possible alternator problem


do u have a battery light on? if not most likely the battery is no good, if this is not a Motorcraft battery be suspect of it, have Autozone test it and the charging system, it is free.

Jun 10, 2009 | 1990 Mercury Grand Marquis

1 Answer

No charging in Cavalier 99 2.2 L


the diodes in the alternator are bad. rebuilding the alternator will fix this charging problem.

Mar 10, 2009 | 1999 Chevrolet Cavalier

1 Answer

Battery goes dead often. Must jump or charge almost everyday


perhaps your problem is not so complicated. maybe one of your vanity mirror lights arent shutting off or something. go out in your car at night and look for light after your dome light shuts off.

Jan 11, 2009 | 2001 Jeep Grand Cherokee

Not finding what you are looking for?
1999 Mercury Grand Marquis Logo

326 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mercury Experts

yadayada
yadayada

Level 3 Expert

76109 Answers

fordexpert

Level 3 Expert

5520 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

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

Answer questions

Manuals & User Guides

Loading...