FAULTY KNOCK SENSOR: SYMPTOMS

There are many reasons why your car engine knock sensor might go bad over time. The second cause of a bad knock sensor could be the misuse of the car – if you are handling your vehicle roughly, and causing poor acceleration and poor fuel economy, the car’s performance will suffer and it can damage the knock sensor.

What Causes Engine Knock?

• Poor timing: The spark is not igniting at the correct time.
• Improper air and fuel mixture: If the ratio of air to fuel is incorrect, this could create ignition problems.
• Deposits inside the cylinder: Dirt, grime, and contaminants can enter cylinders and create all sorts of issues.

• Engine warning light comes on.
• Error code is stored.
• Reduced engine power.
• Increased fuel consumption.

One symptom of a bad knock sensor is the engine doesn’t feel right while driving at speed, or while the vehicle is carrying a light or heavy load. If you notice something seems off with your vehicle, even if no light illuminates, it is best to have your car checked out by a mechanic.

In conclusion, you can drive with a bad knock sensor—that is, if you want to destroy your engine and get atrocious performance from your car. The moment you confirm that your knock sensor has seen better days, it would be wise to swap it right away with a high-quality replacement.

Yes you can run with out a knock sensor without any problems if you are driving carefully. Its only there to sense knock and if you get too much it’ll pull some timing out. All it is, is a safety measure so we dont blow our motors.

Can you delete knock sensor? Leave the knock sensors. No reason to delete them. AIR, EGR can go away, but leave the knocks sensors, like everyone else said, there is no performance loss and they will save your engine if you every get crap gas.

Knock sensors are vital to the function of your car because they prevent your engine from being damaged due to too much air pressure caused by the air and fuel mixture mentioned above. When the engine does experience extensive damage, your car will break down.

How often do knock sensors need to be replaced? On most vehicles, the knock sensor is tough enough to last over 150,000 miles.

If you have a standard vehicle, the average knock sensor replacement cost will usually range anywhere between $120 and $500 on average for the cost to replace a knock sensor. The cost of the parts is generally between $65 and $200, while the labor cost will range between $50 and $350.

Yes. A faulty knock sensor will cause the engine to fire the spark plugs at a sub optimal time, causing loss of power, and perhaps causing the transmission to compensate for the loss of power by using a different, and less economical, gearing than if the knock sensor were working properly.