2003 mercury sable electrical issue

Asked by Edward Feb 08, 2019 at 09:42 AM about the 2003 Mercury Sable GS Sedan FWD

Question type: Maintenance & Repair

After a very bad jump start where a Toyota Tundra driver
backwards jumped the battery, it caused a lot of smoke
from both batteries.  Now engine of the sable won't say
running.  Takes another proper jump start (at least 15
minutes each time) for the car to crank over.  After stalling
about 5 minutes after restart, there is no crank until jumped
again.  Cycle continues.  

Here is what I've done so far to no avail:

Checked alternator and battery.... both good
Checked draw voltage from battery.... good
Checked alternator power..... good
Checked all fuses..... none blown
Did discover a constant relay clicking on and off under the
dash fuse panel.  No relay codes were found. Clicking relay
does set off the interior dome light each time it clicks.
Fuses are intact.

So I'm at a loss to figure out what this problem could be.  
My suspicion is ECM related to a power short after
crank/start.  But I'm no mechanic.  Any help would be
appreciated!

1 Answer
9,520

Mike answered 5 years ago

Your car has more than one computer, the engine control and the body control modules probably both cooked at the same nano second the cables were reversed, there are pin-out charts available for you to physically test each circuit but it takes even a trained mechanic a long time to do so you have to compare that to the price of a new computer.

Mark helpful

Your Answer:

Related Questions

  • 2003 mercury sable electrical issue 1 Answer

    After a very bad jump start where a Toyota Tundra driver backwards jumped the battery, it caused a lot of smoke from both batteries. Now engine of the sable won't say running. Takes another prope...

    2003 Mercury Sable GS Sedan FWD

    -

    Maintenance & Repair

  • dashlight 2003 mercury sable 5 Answers

    Just bought a used 2003 mercury sable. All the lights work even the warning lights, except for where the speedometer, gas gauge, and odometer are. I read to check the dimmer switch and have, it h...

    2003 Mercury Sable GS Sedan FWD

    -

    Maintenance & Repair

  • 2003 mercury sable air condition/heater buttons dont work 1 Answer

    2003 mercury sable heater /air conditions buttons not working. The heater /air conditiner works...but the buttons dont work so i can set the temperature...i can tuen the unit off and on...that is al...

    2003 Mercury Sable

    -

    Maintenance & Repair

  • 2003 mercury sable shaking while driving 1 Answer

    I have an '03 mercury sable gs. It started shaking real bad while i was driving. I replaced the brake pads and the tie rod and it still shakes. It starts at around 30 mph and gets worse as i accele...

    2003 Mercury Sable GS Sedan FWD

    -

    Maintenance & Repair

  • 2003 mercury sable stalls 2 Answers

    My mercury starts fine cold but a few minutes into the drive the radio stops the Batt light comes on and the dash goes out. Then most of the time the car stalls. It will start up in a couple minu...

    2003 Mercury Sable LS Premium Sedan FWD

    -

    Maintenance & Repair

Shortcuts

Search Mercury Sable Questions

CarGurus Experts

  • #1
    JP1956
    Reputation
    1,920
  • #2
    Guy Outland
    Reputation
    790
  • #3
    Paul Tuck
    Reputation
    690
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford Taurus
8 Great Deals out of 82 listings starting at $2,499
Used Nissan Altima
25 Great Deals out of 676 listings starting at $3,795
Used Toyota Camry
44 Great Deals out of 1,134 listings starting at $4,795

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. Content will be removed if CarGurus becomes aware that it violates our policies.