Azera Field Case trouble/Engine RPM up & down

MODEL:AZERA	YEAR MODEL:2009	MILLEAGE:33400
DISPLACEMENT: 3800	FUEL : GASOLINE	T/A : AUTO TRANS.

SUBJECT: Engine RPM up & down on R & Drive position.

1)Condition:

• Engine RPM up & down on R & Drive position

2)Cause:

• PCV valve

3)Diagnosis:

1. Check Scan tool = no trouble code.
2. Check for Air leaking= PCV valve malfunction

4) repair Guide.

• Replace PCV valve