Grand marques is running rough on takeoff check engine light came on replace spark on 2 stop for little start back

Asked by Jul 19, 2015 at 02:34 PM about the 2003 Mercury Grand Marquis GS

Question type: Maintenance & Repair

3 Answers

71,685

Unless you just recently did a tune up never replace just one spark plug. Replace all 8. Especally if you have over 90,000 miles on the car and don't know when it was last tuned up. Most likely another plug has failed. What trouble code do you have now? HTH. -Jim

None now still running rough 180000 miles did tune up six month ago

54,545

It may need new coil on plugs (cop). Have the engine fault code read at a local parts store and post them here.

Your Answer

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 1,687 nationwide Grand Marquis listings starting at $1,995.

ZIP:

Mercury Grand Marquis Experts

  • #1
    Tracy Hooks
    Reputation
    5,830
  • #2
    kbro
    Reputation
    2,150
  • #3
    Js08016
    Reputation
    1,900
View All

Related Models For Sale

Used Lincoln Town Car
27 Great Deals out of 1,713 listings starting at $1,004
Used Ford Crown Victoria
6 Great Deals out of 879 listings starting at $1,496
Used Chevrolet Impala
533 Great Deals out of 34,789 listings starting at $990
Used Chevrolet Tahoe
807 Great Deals out of 41,864 listings starting at $1,980
Used Ford Mustang
560 Great Deals out of 36,486 listings starting at $1,500
Used Ford F-150
2,822 Great Deals out of 212,216 listings starting at $1,300
Used Chevrolet Camaro
456 Great Deals out of 31,180 listings starting at $3,550
Used Honda Accord
1,099 Great Deals out of 65,582 listings starting at $561
Used Ford Taurus
204 Great Deals out of 14,703 listings starting at $1,850
Used Mercedes-Benz S-Class
162 Great Deals out of 7,602 listings starting at $2,000

Used Cars For Sale

2008 Mercury Grand Marquis GS For Sale
43 listings starting at $2,758
2007 Mercury Grand Marquis GS For Sale
37 listings starting at $2,495

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.