This is less of a guide but so many people have Lambda problems this seems a good place to put it. The questions below are answered in the website.
http://www.lambdapower.co.uk/diagnosis/diagnostic_index.asp#q2
  • What is the official recommended sensor replacement interval?
  • My car has an uneven idle
  • The sensor / sensor wiring harness / sensor connector is physically damaged.
  • Power is disappearing at cruising speeds
  • Idle speed is cycling up and down or engine is racing
  • I have recently replaced the head gasket
  • The ECU has no lambda fault code registering, even though I suspect lambda failure
  • Someone's been tampering with the injection system
  • How to use an oscilloscope to inspect lambda output when on the car
  • Checking the heater element on the sensor
  • Using a lambda tester
  • Testing lambda output for rich/lean conditions
  • Why use an original sensor from Lambdapower, and not a universal type?
  • What is a universal sensor?
  • But what if i want to use a universal sensor?
  • Can I clean my old lambda sensor?
  • Why do the sensors have different numbers of wires?
  • Can I test my wideband (also known as planar, or 5-wire) sensor?
  • How can the sensor element become contaminated, are there any physical signs, and which chemicals cause this?
  • What are the wiring colours on the harness?
  • Why are there so many different types of connector? Aren't all sensors the same?
  • Like
Reactions: vassilis