Where is mass air flow sensor on 99 s-10 2.2?

On a 1999 Chevy S-10 with a 2.2-liter engine, the mass air flow (MAF) sensor is located in the intake air duct, between the air filter and the throttle body. It is typically found mounted directly on the air intake hose. To access it, you'll need to remove the air filter housing and the duct connecting the air filter to the throttle body.