I got a 2005 chevy cobalt with the 4 banger, and the cars rpms goes up and down when driving down the road maybe maybe by 500 rpms. You cant really notice it unless you look at the tach, anyways the engine light was on and the name of the sensor came up it was called the turbine input speed sensor, from what Im told this sensor is what is causing this is this true? And if so where is it on the cobalt? The car runs and drives pretty good, I dont believe it would be the tranny itself slipping, Im hoping it's just the sensor. And info would be appreciated.
