I have a 91 grand marqui I put a new battery cuz the old one tested bad and when I first connect terminals I have power. When I turn ignition to try and start it all power goes out?

20

Asked by May 31, 2013 at 10:45 PM about the 1991 Mercury Grand Marquis

Question type: Maintenance & Repair

11 Answers

you have an intermittent connection between battery and chassis ground (my fifth today, I swear) coarse wirebrush the connection from the black cable to the chassis ground...yes scrape away the paint too...just get to a reliable electrical connection...same too for the cable end....make sure 300 CCA can get thru there~....and connection from chassis to engine too~ Need GOOOD ground....OKAY~

20

Where is the ground located on the chassis?

well follow the big black cable from the battery...where it ends is the chassis ground...probably has a "Lolli" with a hole in it crimped on end there and is full of corrosion, bout now...hopefully that hex nut isn't chewed off from corrosion~

1 people found this helpful.
20

Doesn't look corroded any other ideas

galvonics are hard to see---imagine a very thin layer....aluminum immediately takes on a galvonic layer reacting with air....the thing is like an invisible sheet that you cannot really see...if you scratched at it with the tip of a screwdriver, you'd see the metal...covered with galvonic corrosion...you cannot see~

122,475

I agree with judge. Loosing all power (on a new battery) when trying to start is usually a connection issue. I would double check all connections. Positive and ground.

1 people found this helpful.

Real CCA, kinda "smokes" this layer a bit, creating an insulative electrical layer, or WELDS itself in place...if you had any involvement with contacting relays, you'd know what I'm talking about to much juice and contacts simply WELD themselves together...same with black wire pullin' over 300 Cold Cranking Amps definitely will want to weld itself solid~

20

When I try to start positive side gets hot

1 people found this helpful.
122,475

Loose or dirty terminals can get hot.

122,475

Take it loose and clean battery posts and wire end real good.

20

Thanks for all the help I got it fixed

1 people found this helpful.

Your Answer:

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 1,236 nationwide Grand Marquis listings starting at $1,799.

ZIP:

Mercury Grand Marquis Experts

  • #1
    Tracy Hooks
    Reputation
    6,050
  • #2
    kbro
    Reputation
    2,230
  • #3
    Js08016
    Reputation
    2,060
View All

Related Models For Sale

Used Lincoln Town Car
29 Great Deals out of 1,461 listings starting at $1,469
Used Ford Crown Victoria
739 listings starting at $3,000
Used Ford F-150
2,230 Great Deals out of 209,288 listings starting at $1,300
Used Ford Mustang
273 Great Deals out of 37,582 listings starting at $1,350
Used Honda Accord
540 Great Deals out of 103,313 listings starting at $950
Used Ford Taurus
192 Great Deals out of 15,857 listings starting at $600
Used Toyota Camry
739 Great Deals out of 72,888 listings starting at $1,000
Used Chevrolet Caprice
142 listings starting at $9,993
Used Cadillac DeVille
1,251 listings starting at $2,300

Used Cars For Sale

2011 Mercury Grand Marquis For Sale
17 listings starting at $4,995
2010 Mercury Grand Marquis For Sale
7 Great Deals out of 69 listings starting at $3,995
2009 Mercury Grand Marquis For Sale
3 Great Deals out of 63 listings starting at $2,977
2008 Mercury Grand Marquis For Sale
6 Great Deals out of 103 listings starting at $1,800
2007 Mercury Grand Marquis For Sale
6 Great Deals out of 94 listings starting at $2,995

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.