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SCHNECKE Ignition Knock (Detonation) Sensor
Brand Information
SCHNECKE
- Provider of Ignition Knock (Detonation) Sensor products to the worldwide OEM market and aftermarket.
- SCHNECKE offers complete Ignition Knock (Detonation) Sensor coverage for Asian, Domestic and European vehicles.
Knock sensors are located at the engine block, either threaded into the side of the block or under the intake minifold, producing an input voltage that the ECM uses to measure engine dynamic vibration.
Ignition knock sensors allow the vehicle computer to monitor the combustion chamber, advancing or delaying ignition and valve timing or injector pulse width for optimal engine performance.
CAUSE FOR REPLACEMENT
- Check engine lamp illumination
- Engine hesitation
- Poor fuel economy
- Failed emissions test
PURPOSE
- The ignition knock sensor determines if engine knock is present (caused by detonation)
FUNCTION
- A piezoelectric crystal, which generates a varying voltage based upon engine vibration intensity, sends a signal to the ECM
- Signal is used to retard ignition timing which prevents engine damage caused by pre-ignition
POSITION
- Located on the engine block
Alcibiades
Reviewed in the United States on January 6, 2025
Bueno
Yimi Arevalo
Reviewed in the United States on August 10, 2024
Just like the title says, this fixed the code I had. I was on a really tight budget and came across this, so I got it. As with other low priced products, I had a feeling I would regret it, however, this worked and is still working perfectly. It is a one to one replacement, and if not for the damage on the OEM sensor, I would not be able to tell them apart. I do recommend filing or sanding down the surface area where this sits and makes contact so the sensor sits flush.
Vic
Reviewed in the United States on July 1, 2024
Worked fine on my 2003 Lariat. No issues with fit.
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