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
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?