I had my car diagnosed at autozone and they said it is possibly the EGR valve, or the EGR control sensor, it sits on top of the egr. Has anyone else had this problem?

The parts are expensive $100 for the sensor and $140 for the EGR. I'm going to keep driving it for now and worry about it later.

Did they tell you what codes they pulled?

Here's a bit more info if it was P0401 or P0402: http://www.obd-codes.com/trouble_codes/generic/p0401-insufficient-exhaust-gas-recirculation-flow-egr.php
http://www.obd-codes.com/trouble_codes/generic/p0402-exhaust-gas-recirculation-flow-egr-excessive-detected.php