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Most knock sensors send a base or “no knocking†reference signal to the PCM. If knocking occurs, the sensor detects the increased vibration and increases its signal to the PCM. The PCM then slightly retards timing until the sensor signal returns to the reference level. If a temporary condition caused the knock, the PCM will set spark timing to the programmed advance. If the knock returns, the PCM will cycle spark timing, advancing timing until knock is encountered and then retarding timing until the knock is gone. Knock occurs when the air-fuel mixture doesn’t burn smoothly or is ignited too soon. Knock can be caused by “hot spots†in the cylinder, such as carbon deposits or spark plugs that are too hot for the engine, high combustion chamber temperatures, or using too low an octane fuel. Knocking can cause engine damage so the sensor is there to protect the engine.
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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.
Where is knock sensor on 1976 Chevy 400?
That year vehicle has a carburetor and does not use a knock sensor.
Does a 94 integra have a knock sensor?
LS does not have a knock sensor. GSR does have a knock sensor
What problems do the knock sensor indicate?
The knock sensor detects spark knock or ping.
How do you change a knock sensor on 1998 Subaru Outback?
that the knock sensor does
Where is knock sensor on 99 pathfinder?
Where is the knock sensor for a 99 pathfinder
What is a driveshaft sensor?
Some vehicles mount a speed sensor on the drive shaft, to see how fast the vehicle is traveling. Not all vehicles use this kind of sensor.
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.
Where is the anti-knock sensor on a 2003 Chevy Avalanche?
you mean knock sensor
Where is the knock sensor on a 2005 town and country?
I don't believe it has a knock sensor.
Where is the knock sensor located for a 2005 Kia Rio?
knock sensor location
Where is knock sensor located on 94 S-10 2.2L?
Knock sensor = CKP sensor on this vehicle.
