2008 Nissan Altima Automatic 24460 miles
My car is a 2008 Nissan Altima 2.5S with a CVT (variable) automatic transmission. I have never used the manual function on the transmission. The engine is making a noise when I accelerate, something between a whining and a grinding noise. The noise goes on at all speeds, and stops when I take my foot off the gas. It sounds like the transmission might be trying to shift, but I'm not sure. The engine temperature does not go up beyond the normal range.