Hello all, I have a 2000 1.6 AEE Felicia and I'm having trouble with the emissions. It's now come to my attention that there is no lambda. I have the wiring but nothing plugged in. I have been under and checked the exhaust and everything looks like it should,  I have a cat and the pipe looks the same as ones iv researched but there is no hole for a sensor on the pipe..my next step is to replace the cat and sensor but it's baffling me that the pipe looks the same but has no place for a sensor. Can anyone advise what might of happened. I also have an issue of it running rough when hot and guessing this may all be related. Iv cleaned the throttle body, replaced the Map sensor and oil catcher and pipe. It's been serviced (new plugs, filters ect) iv also bought a new coil and temperature sensor ready to go on but the lambda sensor is my concern. 

Any help would be greatly appreciated 😁

Edited 23 October, 20241 yr by mizz91
Forgot to say which model I have

49 minutes ago, mizz91 said:

I have been under and checked the exhaust and everything looks like it should,  I have a cat and the pipe looks the same as ones iv researched but there is no hole for a sensor on the pipe..

 

Iirc, the lambda is in the exhaust manifold in front of the engine (there should be a hole in the heat shield) not on the exhaust pipe under the car. If you meant that, then it's probably an exhaust manifold from a different car.

I don't have a heat shield..just a manifold and no place for a lambda..this is what the pipe I have looks like but without the lambda bit..after doing some digging that pipe says it's the cat for a 1.6 Felicia pickup ?? 

Sorry it was for a 1.3, so deleted.

 

Edited 23 October, 20241 yr by nta16

 

F= Lambda Probe wiring plug

https://www.briskoda.net/forums/topic/99891-felicia-engine-bay-sensorcomponent-locations/?do=findComment&comment=1234055

 

Lambda probe 6U0906265C

 

https://webautocats.com/etka/skoda/fel/101/906000/

 

https://webautocats.com/etka/skoda/fel/101/253700/

 

 

 

Sorry, got it confused with other VW engines, which have lambda closer to the engine

 

Either way, you'll need a correct exhaust. Or get someone with a welder to weld a nut for the probe.

As to what happened - maybe someone tried to fit a Polo exhaust pipe from an engine that doesn't have lambda probe in there. I found a few aftermarket different variations for Felicia, but all had the hole in front of the cat.

 

Do you have any pics of the exhaust manifold and exhaust? Maybe there are more changes than that, since you also mentioned missing heat shield.

Edited 24 October, 20241 yr by Papez

13 hours ago, mizz91 said:

replaced the Map sensor

 

You could clean it with a special spray for this task.

It's an extremely crucial part and an after-market isn't the best choice.

Get a lambda and then the cat. 

The clean the injectors and it will pass with flying colors 

Thanks for all you help, il get a picture tomorrow as I'm not with the truck at the minute. I do have injector cleaner to put in.  iv ordered the sensor and I'm going to remove the exhaust to double check there definitely is not a place for it. Then I will get a new one ordered. Thanks again!! 😁

Beware the code in lambda sensor, double check.

Trust the original.

 

https://www.briskoda.net/forums/topic/503246-confusion-with-bosch-lambda-sensors/

 

https://www.briskoda.net/forums/topic/503246-confusion-with-bosch-lambda-sensors/?do=findComment&comment=5651422

 

 

 

Perhaps something like this, arrow to fixing and hole for sensor. -

 

On 23/10/2024 at 21:40, mizz91 said:

there is no lambda. I have the wiring but nothing plugged in.

 

The previous owner removed the lambda? installed an aftermarket exhaust with no lambda sensor hole?

Even so how he drove that car so long? How it pas the MOt and what kind of performance had all these years?

 

Nevertheless go to a well-known exhaust repair shop, they have the tools (drill, pipe tap etc) for this task, an example:

https://akritidis-tools.gr/ergalia-esthitira-lanbda/718-kolaouzo-esthitira-lambda-4048769003456.html

Pay attention for the parts code and buy the original.