Main IndexAuto Repair Home Search Posts SEARCH
POSTS
Who's Online WHO'S
ONLINE
Log in LOG
IN







1999 Mercury Grand Marquis


  Email This Post



Guest
Anonymous Poster
dsheets2764@sbcglobal.net

Jun 7, 2008, 5:34 PM

Post #1 of 5 (2290 views)
Shortcut
1999 Mercury Grand Marquis Sign In

1999 Mercury Grand Marquis engine is not running properly. Idles and revs fine when not in gear. Hesitates and a little rough idle when in gear. Seems to run slightly worse while AC unit is on. What is the problem? Is this a likely O2 sensor problem, or perhaps a transmission sensor? Any help would be appreciated. Thanks!


way2old
Veteran / Moderator


Jun 7, 2008, 5:47 PM

Post #2 of 5 (2284 views)
Shortcut
Re: 1999 Mercury Grand Marquis [In reply to] Sign In

What is the mileage? When was the last tune up? When was the fuel filter last changed? We need all the maintenance information you can give us so we will not be asking things that you have already done. Let us know.



Being way2old is why I need help from younger minds


Guest
Anonymous Poster

Jun 8, 2008, 11:52 AM

Post #3 of 5 (2282 views)
Shortcut
Re: 1999 Mercury Grand Marquis [In reply to] Sign In

Mileage = 100495; as to the rest - car was bought used from son of deceased owner. Son was not sure of any maintenance records. Oil has been changed recently. Car is clean and ran great initially. Only recently did this problem develope. Any info and/or advice you can give will be appreciated.


way2old
Veteran / Moderator


Jun 8, 2008, 1:12 PM

Post #4 of 5 (2281 views)
Shortcut
Re: 1999 Mercury Grand Marquis [In reply to] Sign In

I would start with spark plugs and fuel filter. These are rather inexpensive and easily done yourself. You will need a tool to releadse the lock on trhe fuel filter, but other than that, general tools will finish the rest. Ratchet, short extension, a good 5/8 inch spark plug socket and a 7mm or 1/4 inch socket to remove the coils.



Being way2old is why I need help from younger minds


Guest
Anonymous Poster

Jun 9, 2008, 11:32 AM

Post #5 of 5 (2272 views)
Shortcut
Re: 1999 Mercury Grand Marquis [In reply to] Sign In

Thanks for the info and the help. We'll give it a try. Thanks again. It is appreciated.




1999 Mercury Grand Marquis


  Email This Post
 
 






Latest Forum Post
I have a 2003 chevy silverado. The right rear running light isn't working. I re...
Glad I found this site - now I just hope that you can help me. The first thing i...
I have a 95 Mazda B2300 extended cab. i know its pretty much the same as a Ford ...
Please, any advice is helpful! First, I drive a 1997 VW Passat with 40K (origin...
I have a 2001 Toyota Camry that keeps blowing the gauge fuse. I have put an engi...
I have a 1986 Cadillac Fleetwood Brougham 5.0 the no charges light came on so I...

Feed Button


Used Car Search
Used Car Price Ranges:
Under $5,000
$20,000
$35,000

$10,000
$25,000
$40,000
$15,000
$30,000
$45,000
Over $45,000
Search used Cars By Manufacturers:
Used Acura
Used Audi
Used BMW
Used Buick
Used Cadillac
Used Chevrolet
Used Chrysler
Used Dodge
Used FIAT
Used Ford
Used GMC

Used Honda
Used Hyundai
Used Infiniti
Used Jaguar
Used Jeep
Used Kia
Used Land Rover
Used Lexus
Used Lincoln
Used Mazda
Used Mercedes-Benz

Used MINI
Used Mitsubishi
Used Nissan
Used Porsche
Used Saab
Used Scion
Used Subaru
Used Suzuki
Used Toyota
Used Volkswagon
Used Volvo
2010 Honda Civic
$15,770
2004 Jeep
$8,991
2012 Mustang
$22,990
1997 Honda Cr-V
$4,490
2010 Toyota Prius
$17,496
2010 BMW 328
$26,980




Automotive Forum Categories
Automotive Repair
Auto Body Repair and Refinishing
AC Auto Repair Help Forum
Automotive Wiring and Electrical

Auto Insurance and Car Financing
Automotive World
Brake Systems
Car Stereo Repair Advice
Car Troubleshooting
Engine and Car Noises
Engine Fault Codes
Engine Troubleshooting
Exhaust System Repair

Steering and Suspension
Tricks of the Trade
General Discussions
Car Shows and Events
The Bargin Bin
Motor Vehicle Inspection
Car Care Tips
Traffic Ticket Help
Car Racing

Gasoline, Motor Oils, Concept Cars
Remote Control Cars and Vehicles
Truck Repair
Truck Repair Advice


Truck Engine Repair
Truck Suspension Repair
Motorcycle Repair
Motorcycle and ATV Repairs

Motorcycle Body Repair
Motorcycle Clutch Repair
Motorcycle Engine Repair
Motorcycle Seat Repair
Car Forum Posts - Sitemap


Search for (options) Privacy