Engine erratic or stalls when put in gear while engine still cold

Dear. Mr. Joe,

For the vacuum leak I have ask the mechanic he said there is no leak, but can you told and show me how to check the vacuum leak. Yes, I have recheck the coolant sensor it seems to work okay (recheck with mechanic) and no smell of fuel mixture again.

Is there any ways to check the coolant sensor with ohmmeter?

Thank you,
Sothy

Hi,

Thank you for your help. Sensor and vacuum I have ask mechanic he said working okay. But as I have a friend who use to drive this car he said may be the Idle air control actuator might be failing but that just he thought.

Thank you,
Sothy

Hi,

Thank you so much for your help. I'll recheck the vacuum leak and recheck on the sensor will get back to you when I got result.

Thank you.
Sothy