On my 96" Honda Accord the idling was/ is very erratic, when in park or neutral the tachometer moves from 900 - 1500 rpm. I change out the Idle Air Control (IAC) Valve. The problem still persisted. I then changed out the TPS and well that lasted a day, all hell broke loose. Now the rpm are @ 3000 at a stand still (in park or neutral) Engine light on and it read P0122 Throttle Position Sensor low input. I replaced the new one for the old one and still revs high and same engine code is thrown. Did I mess something up when I changes the TPS? How can I solve the erratic idling as well as th e TPS problem? Thanks in advance.