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otherwise known as a "power balance test," can be very helpful. The normal response is to hear a noticeable drop in the RPM's as the car runs on five cylinders instead of six. No change in the engine sound when the coil pack connector is pulled indicates some sort of problem with that corresponding cylinder. A bad fuel injector is a common culprit. So are corroded and cracked harness connectors, bad coil packs, bad spark plugs, bad compression, just about anything that would cause a cylinder to not "share the load." The normal range for a good coil pack is 0.7-1.6 ohms, in other words, very low. The official number in the FSM is 0.7 ohms, but adding the internal resistance of my cheap Harbor Freight multimeter (touched the multimeter leads together to get internal resistance reading) yielded 1.3-1.4 ohms for all my working coil packs.
"Straight-line acceleration is probably the first aspect of automotive performance that any intelligent driver gets bored with." Peter Gregg
"We owe a lot to the dragsters. They always break something, figure out a way to beef up the part and the benefit trickles down." Robo
"Not everything that can be counted counts. Not everything that counts can be counted." Einstein
"And now my friend, the first-a rule of Italian driving, [Franco rips off his rear-view mirror and throws it out of the car] what's-a behind me is not important." Raul Julia, playing Franco Bertollini while driving a Ferrari Daytona in the movie Gumball Rally
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