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The car was running just fine until it overheated I went and baught a new radiator then check engine light started flashing then loss of power.hard to start dies at idling ect.

Vehicle: 1998 Chevy lumina 3.1

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Hi there,

This code means there are either multiple misfires or there is a misfire and the computer cannot determine which cylinder is misfiring. It sounds possible that there is a head gasket issue causing the problem including the overheating. The overheating could have damaged the plug wires or the spark plugs as well.

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