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hi Scotty,

Hope you find this message in a best of health & spirit

My car is Toyota Camry 2001 american 2.2 L and it jerks on and off during the acceleration and when its in neutral also, so mechanic changes the plugs(Titanium) , the gas kit and the plugs seals but just after 2 days the fault comes back again , than the mechanic clean all the fuel injectors and exhaust pipe connected to the engine but still the issue not gone, than mechanic clean the plugs again and the issue gone at that time and just after 1 day it bounce back, please suggest what to do, Thanks!

Regards,

Abdul Basit

start with a better mechanic, one who can read live and historical data and make sense of it. Often a dirty or bad maf sensor will do that, as can vacuum leaks