what would make both coil packs not fire,and the fuel pump not work on a1998 mercury marquis 4.6 engine

90

Asked by haroldp Nov 17, 2015 at 10:20 PM about the 1998 Mercury Grand Marquis 4 Dr LS Sedan

Question type: General

12 Answers

F_O_R answered 8 years ago

First of all you have 8 coils on a 4.6, one for each spark plug. The fuel pump could be bad or need a fuse replaced. Is the check engine light on?

4 people found this helpful.
Mark helpful
90

haroldp answered 8 years ago

car won't start. no fire,and no gas coming through

1 people found this helpful.
Mark helpful

F_O_R answered 8 years ago

Pull a coil and put a spark plug in it. Ground the outside of the plug to a metal part of the engine and have someone crank then engine over. If you see a spark then you have eliminated that as a problem.

2 people found this helpful.
Mark helpful

FordNut answered 8 years ago

If you are sure there is no fuel to injectors and no spark, to all coil-on-plugs, the yes, with both failing at same time it very well could be the PCM, 'brain' failed

5 people found this helpful.
Best Answer Mark helpful

FordNut answered 8 years ago

Good evening FoR. We agree on this, as we usually do

5 people found this helpful.
Mark helpful
90

haroldp answered 8 years ago

thanks. i will replace the PCM and reply to you what happened

1 people found this helpful.
Mark helpful

F_O_R answered 8 years ago

Feed back is essential to good advice!

2 people found this helpful.
Best Answer Mark helpful
90

haroldp answered 8 years ago

replaced the ECM,and the main brain.still no fire from coil packs, and no fuel.does the PCM have to be reprogrammed again for the car ?

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

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 Buick LeSabre
1 listing
Used Ford F-150
310 Great Deals out of 13,812 listings starting at $3,800
Used Chevrolet Tahoe
13 Great Deals out of 815 listings starting at $9,980
Used Ford Mustang
41 Great Deals out of 1,627 listings starting at $5,977
Used Lexus LS
30 listings starting at $5,995
Used Lincoln Continental
12 listings starting at $21,880
Used Chevrolet Silverado 1500
201 Great Deals out of 7,977 listings starting at $3,000
Used Ford Taurus
6 Great Deals out of 80 listings starting at $4,990
Used Toyota Camry
52 Great Deals out of 1,143 listings starting at $2,500

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.