0
•many EFI engines have knock sensor.the knock sensor may be mounted in the block cylinder head or intake manifold.
•A piezoelectric sensing element is mounted in the knock sensor and the resistor is connected parallel to the sensing elements. when the engine detonates, a vibration occurs in the engine.
•The piezoelectric sensing element changes the vibration into an analog voltage and this signal is sent to the knock sensor module.
•The knock sensor module changes the AC voltage signal into a digital voltage and sends this signal to the ECU. When the ECU receives this signal, it reduces the spark advance to prevent detonation.
•Reference book: Automotive technology
What else can I help you with?
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.
How will a bad knock sensor effect your car?
depends on the car but most retard the timing
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.
How do you test a knock sensor to see if it is bad?
Knock sensors detect detonation ( knocking ) by reacting to the ping by retarding the ignition timing so you will need a timing light for this. connect the timing light and locate the knock sensor, ( many are on the intake manifold ) now use a metal object to tap ( not too hard and not on the sensor itself ) on the intake manifold ( light tapping should suffice ), if the sensor is functioning you will see the timing retard. If the timing does not retard you will need to check voltage across the terminals of the knock sensor connector.
How does a knock sensor work?
A knock sensor is a piezoelectric device that senses the knocks produced in the engine. The knock sensor tells de computer to retard the timing in order to prevent piston damage and/or blown head gaskets.
95 mystique code225 no knockwhat do you check to repair?
Do you mean the knock sensor? It's a device that detects engine knock so that the computer can retard the timing. If the knock sensor isn't functioning, it could be a connector or the sensor.
How do you relocate of knock sensor Nissan 2004 Xterra?
A knock sensor is located in a specific area on the block or cylinder head in order to sense spark knock occuring and send a signal to the ECM to retard the timing. Relocating the knock sensor would defeat its purpose.
What is the function of a knock sensor on a 1991 4.3 s10?
The function of the knock sensor ob a sensor on a 1991 4.3 s10 is to provide the computer the position of the crank shaft to give it the right information to get correct timing. That would be the crank position sensor. The knock sensor monitors the engine for spark knock (ping) so the ECM (Engine Control Module) can retard the timing to eliminate it.
What is the purpose of the knock sensor?
advance or retard timing so vehicle will tolerate lower grade fuel..djones1..chevy dealership
2000 Chevy s-10 knock sensor?
usually on the side of the engine by the crankshaft. The knock sensor provides the computer the position of the crank shaft to give it the right information to get correct timing. A bad knock sensor will cause it to run ruff or not at all The knock sensor senses spark knock or pinging and sends that info to the ecm. The ecm then in turn retards the timing until the ping stops. You can test the knock sensor with the engine running, with a timing light attached watch the timing marks as you tap the engine block with a small hammer, you will see the timing retard briefly.
Where is the Knock Sensor located on a Chrysler Town and Country?
It is located on the side of the engine block. The purpose of the knock sensor is to retard engine timing When there is an engine noise. It is a rare case that one ever goes bad.
If knock sensor is broke off can you drive or does it have to be replaced?
You can drive the car but if the engine should ping (knock) under load, the knock sensor won't be able to tell the computer to retard the timing. Excessive pinging can damage internal engine parts.
