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The spark plugs are located below a panel in the center of the engine block. You don't have individual cables, but rather a panel to which a wiring harness is attached. This wiring harness includes the four boots that fit on top of the spark plugs. When you remove this panel, all four boots come off all four plugs simultaneously. The panel has four long bolts. The wiring connections attach on the right side: you may need to slide out a little compression pin on the wiring harness to be able to slide the entire jack out of the socket, but it should be pretty easy to figure that out. Once the wires are disconnected, you can loosen the bolts and then carefully pull the panel off completely. Spark plug removal is the same as normal, but you will need an extension on the wrench to be able to reach them. As always, only remove the plugs when the engine is cold or you risk stripping the threads on the block. Replacing the panel can be slightly tricky to get all of the boots to align properly. I recommend squirting some WD-40 or silicone spray in the boot (make sure it's ok for the electronics and won't dissolve the rubber... it should be, but different products do different things) to ease sliding it on there. Tighten down the bolts and reattach the wiring and test the car to make sure it's running correctly.

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2005-12-27 14:25:31
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Q: Where are the spark plugs on a 1998 Pontiac Grand Am 2.4 liter engine?
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