2004 Ford Explorer V6 4.0L, Everything Started with a Leftside Lifter click and check Engine Light on, I changed Oil to Synthetic and Filter, Added Sea Foam and STP Oil Treatment, 10 days later the clicking went away, then the Rough Idling started and the codes P2198, P0300, P0312, P0306 o2 Rich Bank @ Sensor 1, MisFire Cyl 2 and 6 showed up. Then I Added a Lucas Gas Treatment, Changed Air Filter, cleaned out the EGR Valve Air Intake area, and Changed all the Spark Plugs to Bosch Platinum pre gapped, and the check Check Engine Codes and Light went away but it Still Idling Rough when at a stop or Low Idle position, motor almost stops. Why? Is it a Bad Lifter, Spring, Coil. What do I check for or need to replace next. Any Engine testings available? Please reply @(derby90@yahoo. Com)
have the same problem?
Wednesday, September 1st, 2010 AT 9:33 PM