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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
Steven Jones
2025-06-27 11:37:24
Put 2 on my 2002 tundra. They work just fine!
Anthony Fields
2025-06-08 10:44:55
It's been an month approaching 500 miles and my CEL light has not returned. 2002 Toyota Sequoia 4wd P0325.
Al Caldejon
2025-05-06 10:22:30
Bought two of this piece of trash after my GX470 threw a code for a faulty Knock sensor. Installed this myself thinking I saved over $100 since it got rid of the code and drove great for a couple of weeks, but no!! Not even 1k miles later and it has the same code again! The great part is its placed under my vehicle's intake manifold. Its gonna be fun! DO NOT BUY THIS WASTE OF TIME AND MONEY OF A PRODUCT!! SAVE YOURSELVES!
Roger Upole
2025-02-04 17:26:52
Thread pitch does not match original (12x1.25mm). This one is 12x1.5mm, and will not thread cleanly into block. Do not try to force it in, or you may damage your engine.
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