What is required of a "Full" tune-up, assuming I need to do a full tune -up? Engine Light on and per diagnostic tool says Nbr 4 cylinder misfiring.

Asked by Apr 07, 2015 at 09:44 AM about the 2000 Mercury Grand Marquis LS

Question type: Maintenance & Repair

2000 Mercury Grand Marquee
170,000 miles
Running a little rough, especially uphill.  Don't want to spend to much as giving it to a friend, but want it in a good enough shape that it won't leave his wife and children stranded on the road.

2 Answers

56,775

Replace the spark plugs and the spark plug boots. Inspect air filter and PCV valve, replace as needed. Replace the fuel filter. HTH. -Jim

6,795

The 4.6 loves new plugs, it wakes them right up

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Mercury Grand Marquis Questions

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 4,900
#2 kbro
kbro
Reputation 1,970
#3 Js08016
Js08016
Reputation 1,490
View All

Related Models For Sale

Used Ford Crown Victoria
6 Great Deals out of 1,494 listings starting at $2,900
Used Lincoln Town Car
46 Great Deals out of 2,140 listings starting at $1,700
Used Chevrolet Impala
944 Great Deals out of 36,281 listings starting at $1,800
Used Ford Mustang
697 Great Deals out of 38,429 listings starting at $1,963
Used Chevrolet Tahoe
1,079 Great Deals out of 31,858 listings starting at $1,495
Used Ford F-150
3,397 Great Deals out of 204,735 listings starting at $1,273
Used Cadillac DeVille
1,967 listings starting at $1,600
Used Chevrolet Silverado 1500
2,660 Great Deals out of 148,544 listings starting at $1,800
Used Buick LeSabre
11 Great Deals out of 2,355 listings starting at $1,768
Used Ford Taurus
358 Great Deals out of 22,339 listings starting at $1,499

Used Cars For Sale

2010 Mercury Grand Marquis LS For Sale
4 Great Deals out of 99 listings starting at $2,999
2009 Mercury Grand Marquis LS For Sale
5 Great Deals out of 103 listings starting at $3,495
2008 Mercury Grand Marquis LS For Sale
5 Great Deals out of 129 listings starting at $2,900