idleair
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idleair [2009/12/15 07:13] twdorris |
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| The problem here is that the MAF sensor is being disrupted in some way under these conditions and the ECU is injecting far more fuel than it should. The ECU "sees" more airflow and believes the engine needs more fuel as a result. But the engine does not need more fuel...it needs less. The ECU just has no way to know that. This excess fuel can basically flood the engine and cause it to bog (as seen in this example) or even die entirely. | The problem here is that the MAF sensor is being disrupted in some way under these conditions and the ECU is injecting far more fuel than it should. The ECU "sees" more airflow and believes the engine needs more fuel as a result. But the engine does not need more fuel...it needs less. The ECU just has no way to know that. This excess fuel can basically flood the engine and cause it to bog (as seen in this example) or even die entirely. | ||
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| ===== Idle Air Clamp ===== | ===== Idle Air Clamp ===== | ||
| - | {{http://ecmtuning.com/images/forums/wikipics/idleairclamp.png }} | + | {{ http://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.txt · Last modified: 2024/03/15 11:16 (external edit)
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