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The firing order for the 2002 Mercury Sable 3.0 liter V-6 DOHC VIN "S" is 1, 4, 2, 5, 3, 6. The 2002 Mercury Sable 3.0 liter Flex Fuel V-6 VIN "2" has the same firing order.
Model no: DC1645A02P 1066579
Click the link for a diagram.
A V6 engine in a Mercury Sable takes ( 6 spark plugs )
A 1997 Mercury Sable has ( 6 ) spark plugs There were two 3.0 L V6 engines offered , the " Vulcan " and the " Duratec "
The firing order is 1-4-2-5-3-6. Looking at the engine from the front of the vehicle Left to right: The rear plugs are 1-2-3 The front plugs are 4-5-6 And the coil pack: 5 1 6 2 4 3
In a Mercury Sable V6 : firewall 1-----2-----3 4-----5-----6 front of vehicle > driver
Bad plugs and wires or/and coil
Click the link for Taurus / Sable firing orders:
Pull off the upper intake plenum and you will have access to the plugs and wires.
They are located in the cylinder heads. Just follow the wires and that will lead you to them
Just had the spark plugs and wires replaced in my 2002 Sable and it cost $420+ tax. Hope this helps