My 04 Camry V6 start-up RPM has jumped from about 1400 to 1900. Have cleaned MAP. TB air control valve is clean with no residue build up. Removed battery ground cable for an hour but problem persists. Vehicle has an electronic throttle control with no throttle cable and no idle air control valve. Throttle pedal was replaced last fall, but the problem didn't start until mid June. Any suggestions?