My car engine RPM is fluctuating

Greetings Dillip,

The first thing I would do is check for vacuum line leaks and do a Throttle Body Adaptation.

1. Disconnect battery for 30 mins.
2. Reconnect
3. Turn key to on for 15 secs ( You will hear clicking as the adaptation is going on ).

Start engine

If it doesn't improve, check again for vacuum leaks. - If no vacuum leaks can be found. Scan the car with an OBD scanner and check the O2 sensor.

Report back with the results and let me know.

Cheers!!

Moe