How can you tell the difference between the battery,the starter,or the alternator being the cause of rough start

20

Asked by Jul 09, 2014 at 11:27 PM about the 2003 Mercury Grand Marquis LS Premium

Question type: Maintenance & Repair

Signs of a bad battery

5 Answers

20

Don't know

2 out of 2 people think this is helpful.
62,195

Well,we can figure it out.

62,195

Have you had battery tested?

2,975

Battery can't hold charge under load 10aeconds Starter sometimes locks up holds charge while trying to spin Solinoids locks up Alt charges the battery idle 12.5 2000 rpm 13,5

1 out of 1 people think this is helpful.
2,975

Three separate systems tha wok together but need diagnose seperate Like anything start battery and ends 1st thing because no battery Have to stop Ok then ck starter and if ok ck alt voltage then next juice at the coil juice at the plugs and then Gas and so on and so on until you figure out what's up codes are nice obd1 people don't use much anymore I do Obd2 tells you what to replace most of time. Obd1 makes you look for problem you have to figure it out.most dealers now won't work on obd1 cars.what does that say for the industry .bo hiss and they want to fix my car .110 hr I don't think so.not unless shop formans around .most shops Have one diagnosis guy and parts changer.i love to figure it out.sometimes I dream about car problems and,most of the time,I fix them in my sleep I'm nuts I think but I love cars

Your Answer

Add photo

Related Questions

  • MY CAR IS RUNNING ROUGH FROM TIME TO TIME. 20 answers

    About a month ago my 1998 Mercury Grand Marquis started running rough after I pumped regular gas at a Chevron Station. As the car has 67,000 miles I took it to Sears Auto Center to have the spark plug...

    1998 Mercury Grand Marquis 4 Dr GS Sedan

    -

    Maintenance & Repair

  • How do I start my 2000 mercury grand Marquis after changing the starter and alternator? 3 answers

    I recently had a alternator catch fire from the top by wires.. Changed wires that were damaged,alternator,and starter figuring that fire blew it out but still it won't start....also I was told i...

    2000 Mercury Grand Marquis GS

    -

    Maintenance & Repair

  • Not starting after leaving it sit over night 32 answers

    I have a '99 mercury grand marquis. I just got a brand new starter put on and some wires cleaned up. I paid an extra $90.00 an hour on a machine for the wiring and nothing came up. It starts up but af...

    1999 Mercury Grand Marquis 4 Dr GS Sedan

    -

    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

  • Can it be the starter? 5 answers

    Running fine, then nothing works. Turn key no sound, no nothing, all (it seems) trouble lights go on . No power steering, cannot roll up windows, nothing., no clicking that I would associate with sta...

    2000 Mercury Villager 4 Dr Sport Passenger Van

    -

    Maintenance & Repair

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 1,816 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 Mercury Marauder
28 listings starting at $10,000
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

2007 Mercury Grand Marquis LS Premium For Sale
4 Great Deals out of 105 listings starting at $1,900