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

Tiny
PHALSOTHY
  • MEMBER
  • 41 POSTS
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
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Friday, November 20th, 2020 AT 9:16 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Hi,

Yes, it can be checked with a multimeter for resistance. The resistance will change based on temperature. Unfortunately, I don't have the specifications for your car.

Joe
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Friday, November 20th, 2020 AT 9:36 PM
Tiny
PHALSOTHY
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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
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Friday, November 20th, 2020 AT 9:44 PM
Tiny
JACOBANDNICKOLAS
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Hi,

The IAC is responsible for maintaining engine idle speed. Some can be serviced. Since you don't have any trouble when it warms up, that may indicate it isn't bad.

Here are a couple links you may find of interest. Note that the IAC is located on the throttle body. The first link explains how to service and the second how to replace (in general).

https://www.2carpros.com/articles/idle-air-control-valve-service

https://www.2carpros.com/articles/how-to-replace-an-idle-speed-control-motor-iac

Let me know.

Joe
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Friday, November 20th, 2020 AT 9:52 PM
Tiny
PHALSOTHY
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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
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Friday, November 20th, 2020 AT 11:11 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Hi,

You are very welcome. Let me know if I can help.

Take care,
Joe
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Saturday, November 21st, 2020 AT 8:35 PM

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