my 2000 grand marquis has a trouble code p0455 has anyone know what would cause the problem. the idle has what appears to be a miss(either a fauled plug ar a bad wire

790

Asked by Oct 09, 2012 at 11:20 AM about the 2000 Mercury Grand Marquis LS

Question type: Maintenance & Repair

3 Answers

228,685

http://www.obd-codes.com/p0455

1 out of 1 people think this is helpful.
Best Answer

Do you have an engine miss through out your driving range? It is possible that your spark plug boots and springs are in. need of replacement. The 4.6 L engines with coil on plugs are bad about the boots and springs fouling up, your car will intermitently act as if an injector is not firing because of this. Many people end up replacing the entire injector when indeed it is only a $5 problem instead of $50.

sulfur/rotten egg

Your Answer

Add photo

Related Questions

  • Grand Marquis 2000 idling rough and missing 5 answers

    My car took a balljoint break down and the hit made the security theft engage I jud got it out the shop after they got it too crank and wen I crunk it the engine was idling rough I notice too spark...

    2000 Mercury Grand Marquis GS

    -

    Maintenance & Repair

  • 2006 Grand Marquis, Intermittent Rough Idle followed by Overheat 18 answers

    I have a 2006 Grand Marquis, Normal 4.6L V8. Every couple days, my car will randomly begin idling seriously rough, with the rpms dropping to 300-500, then jumping back to normal every few seconds....

    2006 Mercury Grand Marquis LS Premium

    -

    Maintenance & Repair

  • 2000 grand marquis.trac control light on or digital temp elevates ch.engine came on. car running rough.#5 plugs mis-firing any ideas? 15 answers

    After accelerating at a very high speed for a short distance 1/8 mile. can start hesitating, the trac control came on then off then the temp gauge went up then back to normal. car was very reluctant t...

    2000 Mercury Grand Marquis LS

    -

    Maintenance & Repair

  • Engine trouble 5 answers

    I've been having intermittent trouble with my car starting and running. It is a 99 Grand Marquis and has around 80000 miles on it. It won't start half the time but will turn over and there is power...

    1999 Mercury Grand Marquis 4 Dr GS Sedan

    -

    Maintenance & Repair

  • 1998 mercury marquis still running bad after new wires and plugs 2 answers

    changed plugs and wires but car still running bad, what could be the problem, check engine still on. What could be the problem?

    1998 Mercury Grand Marquis 4 Dr GS Sedan

    -

    Maintenance & Repair

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 1,812 nationwide Grand Marquis listings starting at $500.

ZIP:

Search Mercury Grand Marquis Questions

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 5,260
#2 kbro
kbro
Reputation 2,050
#3 Js08016
Js08016
Reputation 1,660
View All

Related Models For Sale

Used Ford Crown Victoria
10 Great Deals out of 973 listings starting at $2,990
Used Lincoln Town Car
28 Great Deals out of 1,817 listings starting at $1,650
Used Chevrolet Impala
558 Great Deals out of 28,750 listings starting at $1,595
Used Ford Taurus
194 Great Deals out of 19,305 listings starting at $500
Used Ford Mustang
318 Great Deals out of 45,689 listings starting at $2,000
Used Ford F-150
2,428 Great Deals out of 210,086 listings starting at $895
Used Cadillac DeVille
8 Great Deals out of 1,596 listings starting at $1,995
Used Honda Accord
703 Great Deals out of 82,121 listings starting at $500
Used Chevrolet Tahoe
604 Great Deals out of 27,653 listings starting at $600
Used Chevrolet Silverado 1500
1,952 Great Deals out of 159,917 listings starting at $1,995

Used Cars For Sale

2010 Mercury Grand Marquis LS For Sale
7 Great Deals out of 100 listings starting at $3,999
2009 Mercury Grand Marquis LS For Sale
84 listings starting at $4,300
2008 Mercury Grand Marquis LS For Sale
5 Great Deals out of 97 listings starting at $500