What could cause a 2000 Toyota Corolla to hesitate from a standing stop and turn...

J

Jerry P

New member
...on check engine light? I have changed Mass Air Flow, Plugs and Throttle Body sensor and used over counter product in gas tank to clean injectors. The problem persists. Toyota repair shop said codes PO172, PO 441 and PO 446 show up. They wanted to change MAF, Plugs and a canister that controls emissions in rear of car but, could not garantee this would solve problem. Before MAF was changed code was PO171. Anyone got ideas?
 
Go to this site .http://www.aa1car.com it explains everything about codes and how they work. 171 is too much air and not enough fuel. too lean. they can explain it better than I can.
 
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