it used to idle like crap and almost die all the time and had little power and i found that the sensor in the intake manifod was unplugged the air temp i think is what it is but now at highway speed if im not on the gas enough it sputters wich it didnt do when that was unplugged,,, do i need a new one?

 

Don't know if this works on yours, but I would disconnect the bat to erase the memory, then reconnect and drive so that it can relearn the setup.

 

x2

 

x3 when you drive around with some thing wrong for a while it will be hard for the ecu to run good if you don't let it wipe and restart