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Q: Can this problem be solved? on 2002 Ford Thunderbird

Random codes issue / keeps changing on which cyclinder
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Inspect spark plugs(have you changed them since fist getting the code?).Monitor live data with proper scan tool and see if any sensors are not in proper range IE - temp reading below 190F after full warm up. Watch spark advance and long term fuel trim and more , will give you better info to diagnose.
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