Having problems with your 2002 Jeep Liberty ?
02 Liberty 3.7 , recent new heads, new coil packs, plugs . Intermittent rough idle, random misfires and spark advance jumping around at idle from 0-17. I am lost as to what's next to check
Crank shaft position sensor
Repair Help & Product Troubleshooting for 2002 Jeep Liberty
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