i just had some wiring done on my 06 2.2L, manual, fuse block and when i went to pick it up they forgot to plug in my air flow sensor. DUH when it was running it would sputter bad stopped at a light and i have to get the RPMs up high to keep it running. well they plugged it back in and it still does it but only every now and then. like i shift it into 2nd and it chokes until it gets to about 3500 rpm. could that be a bad sensor i am lost? lol