CEL issues - what I've done, what else should I do
Thanks for any suggestions - First time Ford/Ranger owner, 2002 XLT, 2WD, 3.0, 165K miles. I have owned it now for 1 tank of gas and it starts running rough, then check engine light comes on. I have the codes checked 3 times: misfire on 4, 5 and 6 cylinders, OS, MAF, too rich/lean... and I don't trust any of them. So... I clean the MAF, IAC, and seafoam - lots of carbon everywhere. Now when I am idling I can't get the RPM's over 3000. I am done for the day, will try more tomorrow - any suggestions on what to try next - the one shop wanted to give me a tune-up, but the wires look pretty new, and I am thinking why would you change the wires and not the plugs too. Any suggestions would be appreciated.