will bad coil cause battery to drain

Asked by Nov 29, 2016 at 08:00 PM about the 2006 Mercury Grand Marquis LS Premium

Question type: Maintenance & Repair

4 Answers

64,995

I doubt it. With the ignition off there should not be any power going to the coil.

6,635

Yes, I believe yours is always hot to one side of coil and computer turns on and off the negative side, so if your is grounding, it will stay on. Check with ignition switch turned off and see if you get 12 volts at the coil. You shouldn't, if it's working correctly

64,995

I have had a dozen or so bad coils on my Triton engines and never a fault like that.

1,245

Google on You Tube "parasitic draw test". tons of instructions on how to find it with a multimeter. Could be alternator, or a zillion other things.

Your Answer

Add photo

Related Questions

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 1,835 nationwide Grand Marquis listings starting at $2,000.

ZIP:

Search Mercury Grand Marquis Questions

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 5,520
#2 kbro
kbro
Reputation 2,080
#3 Js08016
Js08016
Reputation 1,790
View All

Related Models For Sale

Used Ford Crown Victoria
16 Great Deals out of 1,221 listings starting at $1,595
Used Lincoln Town Car
34 Great Deals out of 1,791 listings starting at $1,500
Used Chevrolet Impala
591 Great Deals out of 34,068 listings starting at $899
Used Ford F-150
2,064 Great Deals out of 207,332 listings starting at $1,499
Used Dodge Charger
454 Great Deals out of 29,322 listings starting at $2,300
Used Chrysler 300
404 Great Deals out of 19,199 listings starting at $850
Used Honda Accord
946 Great Deals out of 77,735 listings starting at $899
Used Ford Taurus
270 Great Deals out of 20,573 listings starting at $1,995
Used Cadillac DeVille
4 Great Deals out of 1,627 listings starting at $1,988
Used Cadillac DTS
57 Great Deals out of 1,611 listings starting at $1,575
Used Buick LeSabre
19 Great Deals out of 1,920 listings starting at $1,000
Used Chevrolet Tahoe
558 Great Deals out of 31,371 listings starting at $1,500
Used Ford Mustang
543 Great Deals out of 45,845 listings starting at $1,999

Used Cars For Sale

2007 Mercury Grand Marquis LS Premium For Sale
7 Great Deals out of 93 listings starting at $2,495

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.