Unplug the MAF sensor and see if the engine runs better. If it does (it will throw a CEL), clean the sensor. If cleaning it does not restore the engine's performance, replace the MAF sensor.

Be certain you clear the KAM after cleaning or replacement.

Steve

98 Contour SE Sport 2.5 Duratec ATX The wifey's car 89 Taurus SHO - 246K miles 94 SHO ATX - 190K 1997 F-150 5.4L ATX - The Workhorse 150K. ANY THREAD WITH "OMG" or "WTF" ETC IN THE TITLE WILL BE IGNORED!