Check the compression in your cylinders
Just had the spark plugs and wires replaced in my 2002 Sable and it cost $420+ tax. Hope this helps
With a socket for removing plugs. The wires should just slip off and need to be replaced with the exact same length.
Bad plugs and wires or/and coil
Start with the ign. wires and the spark plugs.
Screwed into the engine. Follow the spark plug wires.
Check all of the plug wires. Make sure they are all routed correctly, and on tight. If that is all good then perhaps the timing belt is off by a tooth or two.
Pull off the upper intake plenum and you will have access to the plugs and wires.
As needed CheckSpark can quickly determine the health of your plugs and wires . You can get it on e-bay $24.95
check that your sparkplugs are not cracked and that your wires are fully on your plugs
They are located in the cylinder heads. Just follow the wires and that will lead you to them
Spark plugs and wires should be replaced after 60,000 miles depending on the type of driving and the location where you live and drive.