Join Date: Oct 2011
Location: Magnetic Hill, New-Brunswick
Did you get an ACDelco or GM sensor , because these cars really hate the aftermarket ones like Bosch and other generics. They only last about 3 weeks. Are you getting a DTC code? It's probably your first HO2 sensor. There is only one bank of sensors on a Cobalt (Bank 1).
To answer your question if this can make your car sluggish, yes if you get no reading at all from HO2 sensor. Engine can even fall into limp mode if you try and give it the boot.
Never drive faster than your guardian angel can fly