alt. is good
battery is good
checked fues good
what about wiring
The most common cause for a 1996 Mercury Sable not starting is a dead battery. The second most common cause for the automobile not to start is a lack of fuel.
dead cell in the battery or something is on pulling power from the battery.
It was the starter
A 1997 Mercury Sable came stock with size p205/65r15 tires. Taller or shorter tires will cause the speedometer to read incorrectly.
Bad plugs and wires or/and coil
Yes.
It could be a bad alternator and the car is just running on battery,or there is a short in the circuit. look for carotid battery terminals and clean with a wire brush. then check for faulty wiring. it might be the power wire on your starter,it was on mine!!!
The most common cause of a dome light staying on in a Mercury Sable is electrical issues. If a fuse becomes disconnected or is loose this can cause the light to remain on. Check the dimmer switch and the plunger switches in the door jambs.
I have the exact same thing with a 2002 Mercury Sable GS Not sure but I think it is some sort of vacuume leak somewhere
Replace your transmission pump or get a new transmission.
Dead cell in the battery. Something on which is drawing power from the battery. Stuck relay.
1999 Mercury front and humming noises can because by several things. Tire noises are the most common cause. A tire that is not wearing properly can cause a humming noise.