Oh, BTW, if you were really a tech you would know that 99% of the time a lean code like that is a vaccum leak. Usually it is caused by a bad PCV line (just like I described in that link I gave you) and not by a sensor. The MAF causes a whole different range of problems of its' own and usually renders the car undrivable. Another thing a tech would know is to unplug the MAF and see if the car runs any better. If it does, then the perhaps the MAF is the issue since the car runs on a base table programmed into the PCM. This richens up the mixture. If the code is caused by a vaccum leak the car will probably run close to normal. If it is caused by the MAF, it will hesitate and dip in power when the throttle is wide open. But, since you are a tech you already know this.
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1998 Escort ZX2, T3 Super 60 at 8 psi, SCT Xcal2, Cobra MAF, 42#/hr injectors, MSD coil, Ford Racing wires, Ford Racing UDP, Fidanza flywheel, Spec 3 clutch, B&M shifter, Trubendz 2.5" exhaust, 19mm RSB, ES bushing kit, Eibach sportline springs, other goodies....
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