When to remove an idle air control valve?
Because of the nature of this valve (large air volume processed) it should be serviced when a tune up is performed to remove “coking” which will hinder the valve’s performance. To perform a rough check of the idle air control, remove the valve while reconnecting the wiring harness.
How to troubleshoot an automotive engine high idle?
The troubleshooting procedure for high and low idle conditions are similar, which are included in the following: Step 1 – If the check engine or service engine light soon has illuminated retrieving the diagnostic trouble codes could lead you in the right direction of what the problem is, or is related too.
How can I check the idle air control?
To perform a rough check of the idle air control, remove the valve while reconnecting the wiring harness. While observing the valve with a flashlight, turn the key to the “ON” position, (DO NOT START ENGINE.) the valve should move slightly.
What causes a rough idle on an EGR valve?
A rough idle may be caused by a faulty ignition coil, a vacuum leak, or an ignition system problem. So before spending money and replacing parts, troubleshoot the EGR valve and other system components to try to narrow down the problem.
Because of the nature of this valve (large air volume processed) it should be serviced when a tune up is performed to remove “coking” which will hinder the valve’s performance. To perform a rough check of the idle air control, remove the valve while reconnecting the wiring harness.
To perform a rough check of the idle air control, remove the valve while reconnecting the wiring harness. While observing the valve with a flashlight, turn the key to the “ON” position, (DO NOT START ENGINE.) the valve should move slightly.
Can a bad air control valve cause an engine to not start?
If an engine isn’t getting enough air, it might not start or will have difficulty starting. This could indicate an issue with the idle air control valve. When the source of air into the engine is inconsistent, it will create a glugging, hesitating, and revving and dying sound. You’ll know something is up.
Why is my idle control not working on my car?
If the idle has not changed at all, it’s likely because your idle control motor has not been functioning. If the idle control motor was working, disconnecting it should have created a difference in the engine’s idle. This test confirms there’s an issue with the idle control motor, but not what the issue may be.
Can a bad idle air control valve cause a backfire?
When the vehicle backfires, it could be another possible symptom of a bad idle air control valve. However, it is also consequential to know that it could be an indication of a completely different kind of issue.
How to change and clean an idle air control valve?
How to change and clean an idle air control valve on a 2004 Subaru Legacy Outback. This car is equipped with an EJ25 4 cylinder boxer engine. The idle air control valve (IACV) is similar on other other types of subarus with the same engine. Loading…
What is the idle air control valve on a Subaru?
The idle air control valve (IACV) is similar on other other types of subarus with the same engine. Loading…
Can a bad idle air control cause vibration?
When the engine of your vehicle sounds off on idle, the idle air control valve may be faulty. In most cases, a bad valve will also produce a vibrating effect throughout the vehicle. If this is the case, you may need to have a professional check it as soon as possible.