In short, if you know some maintenance tips to keep your knock sensor healthy, there is no way any sort of spark will happen in the vehicle. There are some common to rare symptoms of bad knock sensor that any driver need to know to ensure the ride to be smooth and effective. First thing, trust your gut, trust your inner self when you are driving at speed or carrying a light or heavy load in the car.
There will be something that has gone wrong. Your car is not operating as it should be or at least you feel that it should be. By listening to the engine sound, by watching the speed change, by comparing the weight of your gas foot with the last time or just steering speed. When it comes to feeling, only your skills, experience and familiarity with your cars can tell. Losing fuel mileague is what you will notice, especially at time of acceleration on highways.
In the other ways, with the same distance you are used to travel, the fuel mileague goes down from F to E faster than it is supposed to. And to you this is the pain in the pocket, and you can see that more money on fuel this week but no change to overall travel distance.
You feel this clearly, and painfully. A malfunction indicator lamp MIL , or check engine light, is a tell-tale that a computerized engine-management system uses to indicate a malfunction. Found on the instrument panel of most automobiles, it usually bears the legend check engine , service engine soon , or a pictogram of an engine — and when illuminated it is typically either an amber or red color.
In this case, the computer can detect different sounds in the engine, and when there is no usual signal from the Knock Sensor, the computer will get the information and will assume there may be problem with the knock sensor. Then the Check Engine Light will turn on. When the knock sensor is not working properly and the computer realizes that, the vehicle will lose engine power. The most damaged engine should normally be the high-compression and flex-fuel ones.
The result would be slowing the timing and keeping transmission out of drive. Technical specifications Download all important data here. Characteristic curve. Please contact us. Contact form Bosch Mobility Solutions. Start enquiry. LinkedIn channel Follow us for regular updates. YouTube channel More than mobility videos. Further interesting topics. High-pressure sensor for gasoline and CNG systems The high-pressure sensor measures the fuel pressure in the high-pressure fuel rail of engines with gasoline direct injection GDI.
Read more. Medium-pressure sensor for engines and transmissions The medium-pressure sensor provides a rapid and precise measurement of fuel and oil pressure in every kind of combustion engine and transmission.
Check the respective pin at the wiring harness connector against ground using an ohmmeter and with the control unit connector removed. Attention: A connection pin can act as shielding and thus have continuity to ground. Check with the oscilloscope when the engine is warm.
Connect the test probes of the oscilloscope. Briefly open the throttle valve. The oscillogram must produce a signal with considerably enlarged amplitude. Signal not clear. If the signal is not clear, tap gently against the engine block near the sensor. Knocking is not detected. If the knocking is not detected, this indicates a defective sensor or circuit.
Observe the tightening torque during assembly. If only it could do something about those annoying salesman. Finding a passion for cars from a young age, Joel carried out work experience as a mechanic whilst at school before starting an apprenticeship after finishing year The knock sensor: What is it and how does it work?
Updated 11 Oct Joel Ilton. Written By Joel Ilton.
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