On a 1996 Mercury Sable : The automatic transaxle ( transmission ) fluid level dipstick is near the firewall and the brake fluid reservoir ( looking from the FRONT of the vehicle it is to the left of the reservoir )
Check transmission fluid level Change transmission fluid and filter
Your 1996 Mercury Grand Marquis may need a new transmission or something as simple as transmission fluid.
Auto transmission fluid.
I have a 1996 Mercury Sable and it did the same thing. The fix was a new transmission. My mechanic noticed that the car was running higher RPMs than it should have after replacing an engine that blew a rod through the engine because of the bad transmission.
The 1996 Mercury Sable the OBD 2 connector is under drivers dash next to kick panel
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( fuse # 21 ) is a 20 amp fuse for the cigarette lighter on a 1996 Mercury Sable
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.
On a Mercury Sable : firewall 1-----2-----3 4-----5-----6 front of vehicle > driver
It was the starter
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