Question about Mercury Grand Marquis
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Posted on Jan 02, 2017
they don't have diagram that i've seen, my roommate has this car and on page 172 of owners manual it gives the number of what fuse does what,, .. which corresponds to the number on the lid of your fuse panel
Posted on May 20, 2009
The 4.6 does not have an traditional distributor. This year engine should have two coil packs located on the front of each valve cover. Each coil pack controls four cylinders. Some of the plug wires will cross over the front of the engine in a wire loom on top of the alternator. The spark plugs are located down in the intake manafold. they run beside the fuel rail on each side of the intake manafold where it joins to each head. You will need an extention at least 8 to 10 inches long to get at the spark plugs. The plug wire fit snuggly into the intake manafold and have an extention on them that connects to the spark plug.
Posted on Jan 22, 2010
Testimonial: "thanks, that's just what i needed to know "
There are eight COPs (coil-on-plugs) to remove. Using a 7mm or 9/32" socket, remove each bolt securing each COP to the intake manifold on top of the engine. Remove all eight COPs, and the spark plugs are underneath. When replacing the spark plugs, use only the proper Ford/Motorcraft plugs, even if they cost twice as much as the aftermarket ones. You will avoid further headaches this way. Hope this helps.
Posted on Mar 30, 2010
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