these codes indicate a lean condition that is showing up through your computer. I would look for a vacuum leak & also check the fuel filter for being stopped up (not getting enough fuel, starvation, henceforth a lean condition possible. ) Google po2177, then po2187. read it, then it may help you. Good luck.If you are having a misfire problem then you have another code for that not these 2 codes. Google that also(misfire code for ford ranger 2.3)
Last edited by 1kool1; 02-01-2011 at 04:40 PM.