Mini Cooper Parts Catalog Mini Cooper Accessories Catalog Mini Cooper Technical Articles Mini Cooper Tech Forums
 
  Search our site:    
View Recent Cars  |   Cart  | Project List | Order Status | Help    
 >  >
Knock Sensor Replacement
 
Bookmark and Share

Pelican Technical Article:

Knock Sensor Replacement

Steve Vernon

Time:

30 minutes30 mins

Tab:

$20 to $50

Talent:

**

Tools:

13mm socket, torque wrench

Applicable Models:

R53 (2002-06)

Parts Required:

Knock sensor

Hot Tip:

Use care handling the fins on the intercooler

Performance Gain:

Horse power

Complementary Modification:

Coolant flush

The 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.
Figure 1

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.

Begin by removing the front clip, please see our article on radiator replacement for step by step instructions.
Figure 2

Begin by removing the front clip, please see our article on radiator replacement for step by step instructions.

Next you will need to remove the inter-cooler; please see our article on intercooler replacement for additional assistance.
Figure 3

Next you will need to remove the inter-cooler; please see our article on intercooler replacement for additional assistance.

Remove the throttle body; please see our article on throttle body replacement for additional assistance.
Figure 4

Remove the throttle body; please see our article on throttle body replacement for additional assistance.

Water pump is next; please see our article on water pump removal.
Figure 5

Water pump is next; please see our article on water pump removal.

Figure 6

And the supercharger, again please see our article on supercharger removal for step by step instructions

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.
Figure 7

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.
Figure 8

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.

Bookmark and Share

  Search our site:    

View Cart & CheckOut | Project List | Order Status |  Help    

 

[Home] [Customer Service] [Shopping Cart] [Project/Wish List]
  [Privacy Statement]  [Contact Us] [About Us] [Shipping] [Careers]

Copyright © Pelican Parts Inc. -    DMCA Registered Agent Contact Page

Page last updated: Wed 12/7/2016 03:08:10 AM