My 2005 Marquis won't start after sitting for a week,any solutions?

Asked by Jan 04, 2016 at 12:56 PM about the 2005 Mercury Grand Marquis LS Premium

Question type: Maintenance & Repair

My car generally runs great, Some things I checked is the fuel pump is working, That should leave spark, I checked the fuses and relays. I am thinking plug and coil packs ,but they all couldn't go bad at once. It should still start but run rough. All it does is crank and crank. It ran fine when I parked it.

4 Answers

330

Use a gage and check fuel pressure, engine cranking. The initial prime is good as far as it goes, also, hearing the pump run doesn't mean it is making good fuel pressure. Did you visually check for spark at the spark plugs? If your missing rpm signal it can cause several issues. Don't replace anything unless testing points you in that direction.

2 out of 2 people think this is helpful.
185

start simple, is that battery good, is there something draining your battery like a stereo of interior light or door or trunk not closing. if it isn't battery or starter related and you get it started but runs rough, does it smooth out after the engine has ran a while?

1 out of 1 people think this is helpful.
6,255

Is the theft light flashing? Can you use ether to get it to fire over? Is there spark. If no to all then try unplugging the crank sensor connector clean it with brake clean and plug it back in. Sometimes oil can seep through the sensor and cause an open in the crank signal.

3 out of 3 people think this is helpful.
Best Answer

No the battery has plenty of juice.And it never ran rough. No it will not start with ether. I am changing the plugs tomorrow and go from there. Thanks for the ideas.

Your Answer

Add photo

Related Questions

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 2,202 nationwide Grand Marquis listings starting at $1,995.

ZIP:

Search Mercury Grand Marquis Questions

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 5,180
#2 kbro
kbro
Reputation 2,040
#3 Js08016
Js08016
Reputation 1,620
View All

Related Models For Sale

Used Ford Crown Victoria
10 Great Deals out of 1,220 listings starting at $1,700
Used Lincoln Town Car
30 Great Deals out of 2,080 listings starting at $1,995
Used Chevrolet Impala
796 Great Deals out of 34,384 listings starting at $799
Used Dodge Charger
355 Great Deals out of 29,617 listings starting at $2,475
Used Mercury Marauder
35 listings starting at $7,998
Used Honda Accord
814 Great Deals out of 81,613 listings starting at $899
Used Chevrolet Tahoe
775 Great Deals out of 28,451 listings starting at $1,500
Used Chrysler 300
402 Great Deals out of 22,150 listings starting at $1,000
Used Ford Taurus
254 Great Deals out of 20,509 listings starting at $1,500
Used Ford F-150
2,700 Great Deals out of 212,349 listings starting at $1,000
Used Cadillac DeVille
6 Great Deals out of 1,952 listings starting at $1,750
Used Ford Mustang
363 Great Deals out of 44,490 listings starting at $1,000
Used Toyota Camry
1,094 Great Deals out of 96,265 listings starting at $1,250

Used Cars For Sale

2007 Mercury Grand Marquis LS Premium For Sale
4 Great Deals out of 109 listings starting at $2,750