Question about 1993 Toyota Corolla
What is the knock sensor
What is the question, the idle speed or the knock sensor? The idle speed is not adjustable, it is computer controlled, if it has a stalling problem then the idle speed control valve is dirty.
The Knock sensor is just that, it senses what some people call spark knock, some pinging and others cylinder detonation, it sends a signal to the computer that the engine is knocking and the timing is then retarded until the knock stops, it can not completely stop knock but in most cases it controls it well as long as the engine is in good condition and the right grade of gas is used.
Posted on Nov 21, 2008
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