1997 Ford Crown Victoria engine knocking and missing

1997 FORD CROWN VICTORIA
105,000 MILES • V8 • 2WD • AUTOMATIC
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PEDERSON35
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Last time I drove the car it was running fine. Shut it off and went back out to it a couple of hours later. Started it and it was knocking and missing badly.
Tried starting it again about 8 hours later, and it runs even worse - sounds like it is only hitting on a couple of cylinders.
Can a faulty O2 sensor cause this or is it possibly something else???
Nov 7, 2009 at 6:16 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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