My car is having starting and runing problems I've changed the crank shaft sencer and nothing the code never showed before I changed it now it is!!! And it's saying air flow input
try cleaning your mass flow sensor. http://troubleshootmyvehicle.com/gm/3.8L/how-to-clean-the-maf-sensor-1
That's what you think it could be
By what you describing it could be, its hard when you dont have the car in front of you.
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