My engine races, but my car just moves slow, until it gets hot

Hello, it depends if you have no accelerator pedal response, or if the engine revs in "drive" but the vehicle will not move. If you have no response, and the idle is a concern - yes, mass air flow system, idle air control valve, vacuum leaks -- something is going on with air intake that needs to her addressed; you could also have an exhaust restriction contributing to the concern. If you have engine revving, the transmission may have a mechanical concern that will need attention. This vehicle is OBDII compatible - any diagnostic trouble codes?