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It changes the TIMING.

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12y ago
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Q: When knock sensor is bad does that affect the pistons or spark?
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Related questions

What problems do the knock sensor indicate?

The knock sensor detects spark knock or ping.


Will the knock sensor make the smoke?

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.


Can knock sensor cause spark knock?

yes when it is not working properly


What is the 2002 avalanche knock sensor?

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.


What is a knock sensor on a 3800 series 2 supercharged motor?

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.


What is the function of the knock sensor in dodge neon?

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.


What does a knock sensor for 2006silverdo?

The knock sensor detects spark knock (ping) and sends that info to the ECM. The ECM makes timing adjustments to stop the ping.


What does a knock sensor bank 1 sensor 1 do?

It detects spark knock (ping) then sends a signal to the ECM to retard timing.


Chevy trouble code 43?

Electronic spark control is not receiving sinal from knock sensor Try replacing knock sensor


What problem could the knock sensor cause on your car?

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.


Location of knock sensor on passat?

The knock sensor on a Passat is located on the side of the engine. It is just below the number two cylinder spark plug.


What is the function of an detonation knock sensor?

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.