Hi

I have a 1996 Elantra and I recently replaced the Fuel Pressure Regulator and the Mass Airflow Sensor. I now have a rough idle. I checked the voltages on the MAS and the Throttle Postion Sensor and both appear to be correct. Is there a way to check the Idle Speed Control Actuator?

 

first, check to be certain that from your MAFS to the TB you have good seals everywhere..i had an idle issue because of a crack in my air tube between the MAFS and TB