This issue could be due to a dirty mass air flow (MAF) sensor. It can also be triggered by a dirty idle air control valve.
Over time air particles will stick to the MAF sensor and it won't be able to monitor the airflow correctly. This can make the idle rough or not idle at all.
This sensor can be cleaned out and many cases the cleaning out of the sensor will fix the idling issue.
The MAF is located on the throttle body (see diagram).
When a IAC gets dirty due to trapped air particles in the valve, it will have reduced air flow, which can impact the way the engine idles. This too can be serviced by cleaning out the dirt buildup.
The IAC is located on the throttle body (see diagram)
I have attached diagrams for your reference.
Please let me know of any questions.
Images (Click to enlarge)
Wednesday, September 22nd, 2021 AT 10:59 AM