Q: my car is a 2003 liberty limited edition model and misfires when engine is idle. on 2003 Jeep Liberty

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i have changed plugs and its still the same. can it be the sensors.
(1) Answer
you should also replace spark plug wires,distibuter cap and rotor. if equipped. and check vacuum hoses for leaks. if misfiring CEL IS PROBABLY ON. take it to autozone and get the code read. start there