It changes the TIMING.
The knock sensor detects spark knock or ping.
No. The knock sensor's purpose is to detect spark knock (pinging) and send a signal to the ECM to temporally retard the timing until the spark knock stops.
yes when it is not working properly
The knock sensor sends a voltage pulse to the computer whenever it detects the vibrations caused by metal, such as the conditions caused by the spark knock. When the knock sensor sends a voltage pulse, the computer retards the timingin an effort to stop the spark knock.
The knock sensor detects spark knock (aka ping), sends that signal to the engine control module (ECM), the ECM retards the timing until the spark knock stops.
knock sensors operate the same in every vehicle. when the engine "pings" or called spark knock( due to bad gas or low octane fuel, carbon build up on top of pistons or valves) the knock sensor sees this and retards the timing. vehicles now days, timing is not adjustable by u or me, only through the computer using the knock sensor and other sensors. master tech 26 yrs.
The knock sensor detects spark knock (ping) and sends that info to the ECM. The ECM makes timing adjustments to stop the ping.
It detects spark knock (ping) then sends a signal to the ECM to retard timing.
Electronic spark control is not receiving sinal from knock sensor Try replacing knock sensor
If the knock sensor failed the CEL (Check Engine Light) would be illuminated and the engine may "ping" or "spark knock" under load. Serious "spark knock" can damage the engine if allowed to continue.
The knock sensor on a Passat is located on the side of the engine. It is just below the number two cylinder spark plug.
The knock sensor detects spark knock or ping and sends a signal to the vehicles putor. The putor takes that information and retards timing in an attempt to eliminate the ping.