Knock sensors are piezoelectric knock sensors.
The knock sensor is constructed of a crystal that when pressure or vibrations are sensed, electricity is created. Via software and sensor design, this crystal can be used to monitor a gasoline engine for noise or knock. The software in the DME is programmed to the frequency of ignition knock or detonation to prevent erroneous readings, as the sensor will react and create voltage with mechanical noises as well.
R56 model engines utilize one sensor to monitor engine knock. The knock sensor is mounted to the engine block, below the intake manifold above the starter motor. The knock sensor usually fails, setting a check engine light and a knock sensor fault code.
When a knock sensor fails, the ignition timing on your engine may be held in a retarded position until the fault is remedied, therefore reducing engine power and the chance of detonation. When replacing the sensor, MINI recommends replacing the fastener as well. To test the sensor, you will have to gain access to the sensor. Then you will backprobe the connector with the ignition ON. There are two wires at the connector. One is a ground. The other is a reference voltage used for circuit integrity.
Here's the quick test. Use a DVOM.
Get the Best Priced Mini Cooper Knock Sensor
Connect the black lead to battery negative. Then connect the positive lead to the sensor wires. One wire should read close to 0 volts. This is the sensor ground.
The reference voltage wire should read around 2. A bad sensor will either short the reference voltage to ground, or not pull it down to 2. Reassemble the engine and check the DME for fault codes.
Remember that your car may have been serviced before and had parts replaced with different size fasteners used in the replacement. The sizes of the nuts and bolts we give may be different from what you have so be prepared with different size sockets and wrenches. Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. If you're working with the electrical system, disconnect the battery before beginning. Always catch fluids in appropriate containers and properly dispose of any fluid waste.Recover Lost Password.
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Availability: Ships in 1 day. Availability: Direct Ship. Availability: Ships on May 6, Map Sensor - Inlet Mounts to the intake manifold. Free Shipping.
Availability: Ships in 2 Business Days.2007 Mini Cooper S - Crankshaft Position Sensor
Availability: Ships on Jul 31, Camshaft Position Sensor Located on the valve cover near cam. Camshaft Sensor Located on the valve cover near cam. Availability: Back Ordered, Contact Us. Availability: In Stock. Water Temperature Sensor Located on the thermostat housing Thermostat.A car knock sensor is located on the intake manifoldcylinder, or engine block.
The purpose of the knock sensor is to sense unusual pulsations caused by the engine detonation. 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. A bad knock sensor may also not let the engine accelerate properly while driving on the highway, and cause the vehicle to lose fuel mileage.
If you notice these things happening, you should have a certified mechanic from YourMechanic inspect why the car is slow to accelerate. This is true for the knock sensor as well. If the knock sensor detects an abnormality, the computer will let you know with the Check Engine Light.
If the Check Engine Light turns on, have a certified mechanic inspect your vehicle as soon as possible. Once the computer realizes the knock sensor is not working properly, your vehicle will most likely lose power. How much power you will lose depends on the octane limit of the engine, and how heavily it relies on the knock sensor input.
The vehicles that will lose the most power are high-compression and flex-fuel engines. This is because the loss of power will slow the timing and keep the transmission out of drive until the sensor has been replaced. The slow timing is designed to allow you to get to safety or get the vehicle fixed, but not allow you to go very far. The knock sensor senses the vibrations of the engine and will decrease acceleration until the sensor is replaced.
With a faulty sensor, there is a chance that higher emissions are being produced from the engine because the engine may run hot. The Environmental Protection Agency does not allow such high emissions from a vehicle, which is why the decreased acceleration safety feature is put in place. The most popular service booked by readers of this article is Brake Pad Replacement. Our certified mobile mechanics make house calls in over 2, U.
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Related Questions. The car keeps cutting off, i brought idle air contol, mass air flow, and map sensor. What could be wrong There are many faults that can cause a vehicle to stall. A faulty engine speed sensor or weak fuel pump just to start. If the Check Engine Light is on, the vehicle can be scanned for fault codes.
The fault If you have an automatic transmission in your vehicle, don't worry. A properly operating automatic transmission is designed to keep your engine in the correct operating range. The transmission control module will adjust the Key won't turn over, Pontiac G8 An engine that cranks but doesn't start is lacking one or more of the following: compression, fuel, or spark.
You need to check for each of the following to determine the cause. You can check fuel pressure using a dedicatedThe knock sensor on the Mini R53 plays an important part of the engine management system. The sensor detects knocks or pings in the motor, which is pre detonation and can cause serious and expensive damage to the motor. If a knock is detected, the sensor will tell the management system of the engine to severely retard the ignition.
If the sensor has failed, other than an error code you will notice a lack of power and throttle response, especially when on boost. The sensors are easy to replace once you get access to them, which in the case of the R53 involves removing most of the front of the car. Note: you will need a torque wrench to properly torque the sensors. Over the years your car may have been serviced by multiple people including previous owners and this can lead to parts replaced with different size fasteners and hardware.
The sizes of the nuts and bolts we give may be different from what you have so be prepared with different size sockets and wrenches. If something is different on your vehicle please let us know and share your info to help other users. If you have any questions or comments or even a different procedure you would like to share please leave it below and please leave your vehicle information. First disconnect the knock sensor plug by squeezing the metal clip and pulling the wiring connections apart red arrow ; now remove most of the front of the vehicle.
Large Image Extra-Large Image. Well look what we find under most of the major components on the engine, the knock sensor red arrow!
From here is it simple, use a 13mm socket and remove it. The new knock sensor does not come with a bolt so don't lose the old one. Knock sensors are basically small acoustic speakers listening for the knock and need to be torqued to a specific value.
Make sure to verify the torque value on your sensor and tighten it to that. Installation is the reverse of removal. Got more questions? Join us in our Technical Forum Message Board and ask a question to one of our many automotive experts. Or, see what other questions readers have asked about this article All Search Everything. Need to buy parts for this project? Click here to order! Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. I'm glad I found you. Couple of questions, 1.
Do you have photos of getting to the sensor in a non-S Mini Cooper: 2. Would the location on a United Kingdom spec non-S model be the same as a U. I have a UK spec R It is similar location. Same as US models I think.Click here! Your E-Mail and or password are incorrect. Please try again. If you continue to have problems click on the Help Icon for additional options. If you would like login information re-sent to you, click on the button below to request your login information to be re-sent.
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Save this car to my garage. Continue shopping with this car. Share your own image! Add to Cart. Shipping Quote. Add to Wishlist. Email us a Question. Part No: NME Will this item fit my car? Factory replacement Engine Knock Sensor including the sensor, mounting bolt, and o-ring. Have a Question or Comment of your own? Also Purchased with: NME View details.
P0327 MINI - Knock Sensor Circuit Sensor 1 Error
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Save money by doing your own work and perform the repairs using the information we've provided here. Can't find what you're looking for? Check out our Enthusiast Forums - focusing on repair and maintenance projects for all Mini Coopers! If you'd like to submit a tech article based on your own experience, contact us here! But where should you place the jack, and what is the safest method of lifting it?
It's all answered here. New to working on your car? Not sure where the air filter is? Check out this simple article. Here's some short instructions on this very basic of maintenance tasks. This article gives you some basic tips on this very basic task.
This tech article shows you how to replace the air filter on turbocharged and John Cooper works engines. This tech article shows you how to place the radiator support into service position. Spark plugs are an important part of your engine - make sure that they are replaced every 10, miles or so to keep your ignition system running smoothly.
Is it Safe to Drive With a Faulty Knock Sensor?
Over time, the tensioner that keeps the serpentine belt on the MINI tight can fail. In this article, I'll go over the steps to replace it. Oil leak on the drive belt side of your engine? The crankshaft seal can be the culprit, it is quite common to find a leak there.
The seal is PTFE type and requires a special tool and procedure to replace. See how to install an oil catch can on your R56 Cooper S. This tech article shows you how to remove and replace the intercooler on turbocharged models.Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins. Problems with the knock sensor will not cause an engine performance problems.
Replacing the knock sensor usually takes care of the problem. What does this mean? The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. P Mini Description The knock sensor is attached to the cylinder block.
It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. Get Access to Factory Service Manuals. Need more help? Get the P Mini code diagnosed by a professional: Find a repair shop in your area. Related Information.
Knock Sensor Replacement
Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P Mini code? Have you replaced any parts? Any information is appreciated. Repair Importance Level: 3. Why is the Engine Light ON? Home - About AutoCodes. Posted and Edit by AutoCodes.