idleair
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision | |||
|
idleair [2013/02/12 08:52] twdorris |
idleair [2024/03/15 11:16] (current) |
||
|---|---|---|---|
| Line 10: | Line 10: | ||
| The following clip from a customer's log file shows this problem very clearly. | The following clip from a customer's log file shows this problem very clearly. | ||
| - | {{ http://ecmtuning.com/images/forums/wikipics/badsamplelog.png }} | + | {{ https://www.ecmtuning.com/images/forums/wikipics/badsamplelog.png }} |
| You can see that as the throttle was quickly closed, the idle switch went active and engine speed (RPM) started to fall, as it's supposed to. But airflow per rev actually ROSE! If engine speed and engine load are falling, airflow per rev should fall as well. | You can see that as the throttle was quickly closed, the idle switch went active and engine speed (RPM) started to fall, as it's supposed to. But airflow per rev actually ROSE! If engine speed and engine load are falling, airflow per rev should fall as well. | ||
| Line 20: | Line 20: | ||
| ===== Idle Air Clamp ===== | ===== Idle Air Clamp ===== | ||
| - | {{ http://ecmtuning.com/images/forums/wikipics/idleairclamp.png}} | + | {{ https://www.ecmtuning.com/images/forums/wikipics/idleairclamp.png}} |
| What you basically do is to tell the ECU to clamp airflow under these conditions to some value that you know is more reasonable. If the throttle is closed (idle switch is active), you can assume airflow demand is minimal and you can clamp any abnormally high airflow reading accordingly. | What you basically do is to tell the ECU to clamp airflow under these conditions to some value that you know is more reasonable. If the throttle is closed (idle switch is active), you can assume airflow demand is minimal and you can clamp any abnormally high airflow reading accordingly. | ||
idleair.1360677163.txt.gz ยท Last modified: 2013/02/12 08:52 by twdorris
Page Tools
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 4.0 International
