car wont start

Asked by b2bw74 Mar 31, 2012 at 06:22 PM about the 2000 Mercury Grand Marquis LS

Question type: Maintenance & Repair

my car cranks and cranks and wont start, plugged in my scanner and it does not power on, it works on all my other
cars so i know its not the scanner. had it towed to shop they said to replace computer so i did and still no power to the
scanner or computer. i checked all fuses and wiring and everything seemed ok, disconnected battery over night and
still nothing. everything else works, lights, controls etc, but still just cranks and cranks and still wont start or power up
the computer or my scanner. please help

4 Answers
485

Julian answered 12 years ago

check the ECM relay. also, unplug the ECM and check for good power and good ground. its posible you have a broken ground/power wire. i worked on a '94 merc sable, it had a bad power wire going to the ECM.

4 people found this helpful.
Mark helpful
20

spaceshoes29 answered 12 years ago

umm have you tried checking your fuel pump because I had ran into that same problem and my fuel pump had went out.

2 people found this helpful.
Mark helpful
485

Julian answered 12 years ago

but, if the ECM dont get power, you wont hear the fuel pump. the ECM controls the pump operation. not having communication with the ECM says alot about where to look.

6 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • car wont start 4 Answers

    my car cranks and cranks and wont start, plugged in my scanner and it does not power on, it works on all my other cars so i know its not the scanner. had it towed to shop they said to replace compute...

    2000 Mercury Grand Marquis LS

    -

    Maintenance & Repair

  • Car wont start 1 Answer

    I bought a my 98 grand marquis about 2 weeks ago since then the car wouldnt start. Thats the reason it was sold to me. Since then i replaced the crank shaft position sensor. I upgraded all coil pac...

    1998 Mercury Grand Marquis 4 Dr LS Sedan

    -

    Maintenance & Repair

  • Car wont start 1 Answer

    Car was working fine the day before the next day car would not start.tried a boost still didnt start i notice my fuel pump windows and radio wasnt workin checkd the fuses they are good take relay ...

    1996 Mercury Grand Marquis 4 Dr LS Sedan

    -

    Maintenance & Repair

  • Car wont start 3 Answers

    I was driving my car and everything was running fine I went to go move it a few hours later and engine won't turn over at all all lights on the dashboard work headlights work brake lights work int...

    2002 Mercury Grand Marquis

    -

    Maintenance & Repair

  • car wont start 3 Answers

    Car just shut off while I was driving, I replace fuel pump, and relay still the fuel pump won't work

    1999 Mercury Grand Marquis 4 Dr LS Sedan

    -

    Maintenance & Repair

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has thousands of nationwide listings and the tools to find you a great deal.

Postal Code:

Shortcuts

Search Mercury Grand Marquis Questions

CarGurus Experts

  • #1
    Tracy Hooks
    Reputation
    9,700
  • #2
    Trippmeister
    Reputation
    5,040
  • #3
    Bob Beaman
    Reputation
    3,780
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Lincoln Town Car
3 listings
Used Ford Crown Victoria
3 listings starting at $8,960
Used Ford Mustang
41 Great Deals out of 1,643 listings starting at $7,999
Used Buick LeSabre
1 listing
Used Ford F-150
325 Great Deals out of 13,693 listings starting at $3,800
Used Chevrolet Silverado 1500
200 Great Deals out of 8,052 listings starting at $1,500
Used Chevrolet Tahoe
11 Great Deals out of 832 listings starting at $9,980
Used Chevrolet Impala
9 Great Deals out of 130 listings starting at $4,888
Used Toyota Camry
44 Great Deals out of 1,134 listings starting at $4,795
Used Cadillac DeVille
6 listings
Used Lexus LS
3 Great Deals out of 30 listings starting at $5,995

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. Content will be removed if CarGurus becomes aware that it violates our policies.