I have been a long time fan of the Ranger Station, not sure why I never joined before.... Anyhow, my 2005 Ranger has got some serious issued that have me completely baffled. At idle it runs extremely rough and has a distinct missfire. When RPMs above 2000 runs perfect(slight loss of power). Most of the time when I idle the cel will start flashing and I have no power; it feels like it is running on 2 cyls. Then suddenly it is like it wakes up and all power returns. I have replaced all spark plugs, wires and coil. I have cleaned the MAF and throttle body. I have even ran seafoam through. When I pull the codes I get random missfire det., missfire detected cyl #4, missfire detected cyl.#5, and missfire detected 1st 1000 revs. I am completely baffled by this and really appreciate any help you guys might be able to lend.
