2003, 4.6, "missing". Jerky feeling around 50 mph under light to moderate acceleration.

205

Asked by Mar 15, 2014 at 06:11 PM about the 2003 Mercury Grand Marquis GS

Question type: Maintenance & Repair

I have replaced all coils, plugs, and fuel filter. The car has never thrown a code for this
problem. Still have the problem. Any suggestions?

1 Answer

23,455

Try turning off the Overdrive when the sensation begins. You may have a transmission component that is malfunctioning - like Overdrive gear itself or the Lock-up torque converter. A power balance test would definitely show you if the engine was indeed missing.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • engine hesitation when maintaining a speed 10 answers

    I have a 2003 grand marquis with 90,000 miles, when I am maintaining a speed I feel a jerking sensation. I thought it might be old spark plugs and an old fuel filter so I changed both of them out. But...

    2003 Mercury Grand Marquis LS Premium

    -

    Maintenance & Repair

  • symptoms of bad fuel injectors on 5.o liter 1 answer

    car jerks and stumbles on slow acceleration and around 50 to 60 mph

    1991 Mercury Grand Marquis 4 Dr LS Sedan

    -

    Maintenance & Repair

  • where is the lighting control module located on a 2003 mercury grand marquise and how to change? 14 answers

    2003 Mercury Grand Marquis

    -

    Maintenance & Repair

  • MY CAR IS RUNNING ROUGH FROM TIME TO TIME. 20 answers

    About a month ago my 1998 Mercury Grand Marquis started running rough after I pumped regular gas at a Chevron Station. As the car has 67,000 miles I took it to Sears Auto Center to have the spark plug...

    1998 Mercury Grand Marquis 4 Dr GS Sedan

    -

    Maintenance & Repair

  • 2000 Cougar transmission problem? 39 answers

    I have a 2000 Cougar V6. Recently I would notice some serious jerking when I would get on the highway and hit about 65 mph. Then I noticed it would do it on city roads occasionally as well. Now i...

    2000 Mercury Cougar 2 Dr V6 Hatchback

    -

    Maintenance & Repair

Search Mercury Grand Marquis Questions

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 5,280
#2 kbro
kbro
Reputation 2,050
#3 Js08016
Js08016
Reputation 1,660
View All

Related Models For Sale

Used Ford Crown Victoria
12 Great Deals out of 948 listings starting at $2,990
Used Lincoln Town Car
25 Great Deals out of 1,805 listings starting at $1,695
Used Chevrolet Impala
543 Great Deals out of 28,509 listings starting at $700
Used Ford Taurus
197 Great Deals out of 19,234 listings starting at $500
Used Mercury Marauder
28 listings starting at $9,500
Used Ford F-150
2,397 Great Deals out of 210,250 listings starting at $895
Used Ford Mustang
331 Great Deals out of 45,576 listings starting at $2,000
Used Honda Accord
677 Great Deals out of 82,246 listings starting at $500
Used Cadillac DeVille
5 Great Deals out of 1,580 listings starting at $2,900
Used Chevrolet Tahoe
611 Great Deals out of 27,555 listings starting at $600
Used Chevrolet Silverado 1500
1,982 Great Deals out of 160,214 listings starting at $1,995

Used Cars For Sale

2008 Mercury Grand Marquis GS For Sale
45 listings starting at $3,995
2007 Mercury Grand Marquis GS For Sale
47 listings starting at $3,500