NeilGTi85 5 Posted April 23, 2008 Hello All, I need to change my current lambda sensor because its knackerd. Not having much experence with them I had a quick serch and found there are two types. Heated Oxygen Sensors To reduce the warm-up time of the Lambda sensor, an internal heating element may be used. Heated O2 sensors can reach an operating temperature of as high as 500 degrees C in as little as eight seconds! Shorter warm-up time means the system can go into closed loop fuel control sooner, which reduces emissions and improves fuel economy. Heating the sensor also means it can be located further downstream from the exhaust manifold. Titania Oxygen Sensors Some vehicles have a slightly different type of sensor that has a titania element rather than zirconium. Titania O2 sensors are fitted to some Vauxhalls. The operating principle of a titania lambda sensor is entirely different from that of a zirconium lambda sensor. A titania lambda sensor works like a coolant sensor. It changes resistance as the air/fuel ratio goes from rich to lean. But instead of a gradual change, it switches very quickly from low resistance (less than 1000 Ohms) when the mixture is rich to high resistance (over 20,000 Ohms) when the mixture is lean. The engine computer supplies a base reference voltage of approximately one volt to the titania sensor, and then reads the voltage flowing through the sensor to monitor the air/fuel ratio. When the fuel mixture is rich, the resistance in a titania oxygen sensor is low and the sensor's voltage signal is high. When the fuel mixture is lean, resistance shoots up and the voltage signal drops. Which type do I need? I'm guissing Heated Oxygen Sensor?? Also where's the best place to get one? I have a 2L MI 16 out of a 405 by the way, Cheers All, Neil Share this post Link to post Share on other sites
mhyphenl 10 1 Cars Posted April 23, 2008 It'll be a heated O2 sensor, if you've taken the old one off you'll see it has 2, 2 pin plugs attached, one black and should be the supply to the built in heater which will have 12V supply and earth, the other will be blue or red and is the sensor plug itself. As far as i know the colour of the sensor plug is important and the new one must match. Normally around £50 if memory serves me!! Share this post Link to post Share on other sites
NeilGTi85 5 Posted April 23, 2008 I have been looking about and found this: http://www.lambdasensor.com/main/bosch/pri...item=0258003203 This is for a 405 MI16 2L, I take it this is the one? Do you think it'll be worth spending the extra for the bosch one?? Twice the price!!?? Cheers Neil Share this post Link to post Share on other sites
mhyphenl 10 1 Cars Posted April 23, 2008 I have been looking about and found this: http://www.lambdasensor.com/main/bosch/pri...item=0258003203 This is for a 405 MI16 2L, I take it this is the one? Do you think it'll be worth spending the extra for the bosch one?? Twice the price!!?? Cheers Neil Looks right to me, never sure what to to regards branded and non branded parts, i guess piece of mind would say the bosch if the budget will stretch, if not the cheaper one is gonna work better than a broken one. Its probably just down to reliability in the long term! Share this post Link to post Share on other sites
NeilGTi85 5 Posted April 23, 2008 Is there any other manufacturs that make them...im sure NTK do some aswell?? Also, ive heard the term 'wideband' used alot?? What does this refer to? Can anyone clear this up for me, dont want to order the wrong one!! Also, is there anyone around sussex that can weld me a lambda port as i will be getting a new system? Cheers Neil Share this post Link to post Share on other sites
