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Sampath Amarasinghe

Oxygen O2 Lambda Sensor

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1.how to check my lambda sensor is working or not,

2.what will cause any symptoms? 

3.4EFTE GT or Glanza and 4EFE all lambda sensors are same or?

4. also i need to buy a good durable lambda sensor for my starlet gt 4efte from online sites,

have you guys tried online sensors? can you recommend me a good trusted one with a link?  Thanks

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You can check whether the sensor is working by measuring the voltage output from the sensor. Most will output 0.45v @ Lambda 1. Below Lambda 1 it’ll read >0.45 or above it’ll read <0.45. On idle warmed up it should be near 0.45.

If it’s not working, you won’t notice a massive difference, WOT is open loop anyway so it’ll only effect your idle and cruise fuelling. 

The 4efte ones are a very basic single wire sensor, the 4efe is a 4 wire, both however are narrowband. 

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I would only replace it with an OEM Toyota or Bosch sensor

Alternatively you could try cleaning your sensor

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On 10/8/2019 at 8:28 PM, maerijn said:

I would only replace it with an OEM Toyota or Bosch sensor

Alternatively you could try cleaning your sensor

 

On 10/8/2019 at 4:38 PM, RobSR said:

You can check whether the sensor is working by measuring the voltage output from the sensor. Most will output 0.45v @ Lambda 1. Below Lambda 1 it’ll read >0.45 or above it’ll read <0.45. On idle warmed up it should be near 0.45.

If it’s not working, you won’t notice a massive difference, WOT is open loop anyway so it’ll only effect your idle and cruise fuelling. 

The 4efte ones are a very basic single wire sensor, the 4efe is a 4 wire, both however are narrowband. 

thanks, what about ebay ones

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