2001 Marquis having alternator problems

Asked by Jul 07, 2014 at 12:59 PM about the 2001 Mercury Grand Marquis LS

Question type: Maintenance & Repair

My 2001 Grand Marquis recently stopped and would not start again. After some diagnostics
I determined that the alternator wasn't charging properly and replaced it. A week later the
new alternator wasn't working and we replaced that one as well under warranty - it was
bench tested three times, passed once and failed twice. Each time the alternator was
replaced a volt meter showed the alternator was charging just fine 13.7 - 14.2 range.

Now two weeks later, and the other night I had the car's voltage meter show no charge, the
lights dimmed and the ABS and Traction control lights came on. When I got home I trickle
charged the battery as it was close to dead ( this is a 9 month old battery). I have checked
both connections and traced back the wiring they seem to be fine. I have replaced positive
and negative battery connections and traced back those wires, they also appear to be fine.
What am I missing here? The serpentine belt is less than a year old and the tensioner
seems to be working properly with no excess slack. Any ideas??

2 Answers

242,305

Have the alternator checked. When you say you bought a new alternator, was it really new or a remanufactured one?

2 of 2 people found this helpful.

Check the alternator wire.system from alt. to battery post. It can be faulty and need replacing. Bad wires dont necessarily look bad. One car I had only took a spare wire to test it, hooked up straight from one to the other. Car started and charged the battery right up. You will have to check on how your system works to keep from shorting things out. Most newer model cars need to be wired a certain way to test, or maybe use a test meter.

Your Answer

Add photo

Related Questions

  • 2001 Marquis having alternator problems 2 answers

    My 2001 Grand Marquis recently stopped and would not start again. After some diagnostics I determined that the alternator wasn't charging properly and replaced it. A week later the new alternator wa...

    2001 Mercury Grand Marquis LS

    -

    Maintenance & Repair

  • ALTERNATOR WIRING PROBLEMS 10 answers

    I have an 1989 grand marquis and the is a short in one of the alternator wires. the green wire is the problem it doesn't hold any electrical current and is not recharging the battery If you put an ele...

    1989 Mercury Grand Marquis LS

    -

    Maintenance & Repair

  • 2001 Grand marquis 1 answer

    We have 2001 grand marquis not cranking engine turn won't start check no power to fuel pump took the fuel pump out it works with jumper cables tried starting fluid no crank all fuses are good I don...

    2001 Mercury Grand Marquis LS

    -

    Maintenance & Repair

  • 2001 grand marquis 3 answers

    MY grand marquis struggles to start and when i press the horn it sounds like the battery is dying, but when i give it a few minutes the battery is strong again and blows loud but still wont start. i...

    2001 Mercury Grand Marquis GS

    -

    Maintenance & Repair

  • Will the front seats of a 2004 grand marquis fit a 2001 grand marquis and if not why? 2 answers

    I own a 2001 Mercury Grand Marquis and the seats need to be replaced. I found a set of seats at the wrecking yard in a 2004 Grand Marquis but parts interchange says they won't work, I was wondering ...

    2001 Mercury Grand Marquis LS

    -

    Maintenance & Repair

Search Mercury Grand Marquis Questions

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 5,550
#2 kbro
kbro
Reputation 2,080
#3 Js08016
Js08016
Reputation 1,800
View All

Related Models For Sale

Used Ford Crown Victoria
14 Great Deals out of 1,279 listings starting at $1,988
Used Lincoln Town Car
36 Great Deals out of 1,794 listings starting at $1,500
Used Chevrolet Impala
613 Great Deals out of 35,412 listings starting at $899
Used Ford F-150
2,064 Great Deals out of 208,242 listings starting at $290
Used Ford Taurus
276 Great Deals out of 20,489 listings starting at $1,300
Used Honda Accord
1,014 Great Deals out of 77,062 listings starting at $999
Used Cadillac DeVille
4 Great Deals out of 1,680 listings starting at $1,988
Used Buick LeSabre
12 Great Deals out of 1,956 listings starting at $1,000
Used Ford Mustang
623 Great Deals out of 46,672 listings starting at $750
Used Toyota Camry
1,125 Great Deals out of 91,055 listings starting at $1,222

Used Cars For Sale

2010 Mercury Grand Marquis LS For Sale
93 listings starting at $3,100
2009 Mercury Grand Marquis LS For Sale
6 Great Deals out of 76 listings starting at $2,990
2008 Mercury Grand Marquis LS For Sale
4 Great Deals out of 101 listings starting at $2,250

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.