possible causes of car shutting off while driving and then not turning over until starter is jumped?

50

Asked by Apr 12, 2016 at 12:50 PM about the 2002 Mercury Sable LS

Question type: Maintenance & Repair

4 Answers

3,495

This sounds like a bad electrical condition. It could be a severely depleted battery (the lead plates corrode and break down and cause shorts inside the battery) or alternator is failing or just bad grounds in the underhood wiring.

50

battery is new; alternator voltage checks fine and others have said bad grounds in the wiring; what's the best way to find bad grounds when no codes come up?

3,495

Just start tracing them out by site and take them apart, clean both mating surfaces up with a fine grit sandpaper or emory cloth and put them back together. Most grounds that fail are usually in the engine compartment and are usually a black wire that bolts to the engine and or body with a self tapping screw or nut & bolt. You can also find the type that are made of flat braided wire with either an eyelet that gets bolted down, or a clip with small teeth on the ends that slip over a sheet metal part. The last type tend to fail a lot. I once owned a chrysler mini van that had so many electrical gremlins in it, that I took a #10 green coated wire, and ran it around the engine to different mounting points, then to several different mounting point on the body in the engine compartment and finally to the battery ground and never had another electrical problem again.

1 of 1 people found this helpful.
3,495

You can also google wiring diagrams for your car and find just about every ground wire on the vehicle on those, or at the very least, buy a Haynes Manual for your car if you do your own repairs. One last thing, if you only tested the alternator voltage coming out of it with a meter, it does not mean it is good, sometimes as they heat up they make and break connection causing voltage spikes or drops & I have even had more than one of them test as good at auto parts stores, when in fact they were bad, after heating up.

1 of 1 people found this helpful.

Your Answer

Sable

Looking for a Used Sable in your area?

CarGurus has 879 nationwide Sable listings starting at $2,995.

ZIP:

Mercury Sable Experts

  • #1
    JP1956
    Reputation
    680
  • #2
    Tom Demyan
    Reputation
    620
  • #3
    Guy Outland
    Reputation
    400
View All

Related Models For Sale

Used Ford Taurus
248 Great Deals out of 17,805 listings starting at $1,499
Used Mercury Grand Marquis
28 Great Deals out of 1,716 listings starting at $1,700
Used Ford Focus
770 Great Deals out of 54,377 listings starting at $1,495
Used Honda Accord
1,045 Great Deals out of 63,027 listings starting at $999
Used Chevrolet Impala
598 Great Deals out of 34,725 listings starting at $1,250
Used Ford Escape
1,134 Great Deals out of 85,571 listings starting at $999
Used Toyota Camry
1,100 Great Deals out of 72,665 listings starting at $1,000
Used Chevrolet Malibu
1,256 Great Deals out of 77,876 listings starting at $1,500
Used Hyundai Sonata
744 Great Deals out of 47,935 listings starting at $199
Used Honda Civic
843 Great Deals out of 78,708 listings starting at $888

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.