Need help!!!! Infiniti i30T

[Andres322]

today went to auto repair shop.... i found out i have 2 codes.. P0446 P0505.. well i post 2 topic ...i fix the mass airflow sensor which didn't help the stalling problem... and i have pretty gay idle problem when i shift to park.. the idle is like 1400rpm... and "D" it's like 900-1000rpm... it stall when engine is cold...only if i give some gas it will starts no problem... help .. any idea how i could fix these problem.. Thank you

[maxhopper]

The p0505 is for the idle air control valve, so I would start by taking it out and cleaning it. Directions can be found in the How-to sticky at the top of the forum.