Lambda sensor/oxygen Sensor

[GemmaLouise]

I need help i have an audi a3 1.6. i have put an 2 1/4" cat back exhaust system on it my emissions are 9% i need to know if my car has one or two lambda sensors

Thanks
Gemma

 

[Welly]

What year is it?

 

[GemmaLouise]

1998 mk 1

 

[Welly]

I'm struggling to find out as it looks like they changed various things mid 1998, so depends what side you are. Phone up your local audi dealer and give them the reg number, they'll be able to tell you for sure.

Alternatively, look under the car around about the drivers seat, if you can see a lambda, there is your answer...

 

[GemmaLouise]

Also i need to change crankshaft sensor as ive jus done the camshaft n still coming up with hall sensor on ecu. where abouts is the crankshaft sensor placed??
Thanks

 

[Welly]

Also i need to change crankshaft sensor as ive jus done the camshaft n still coming up with hall sensor on ecu. where abouts is the crankshaft sensor placed??
Thanks

Normally on the front of the block... I don't really know off hand o the 1.6 engine.

 

[Alex C]

Also i need to change crankshaft sensor as ive jus done the camshaft n still coming up with hall sensor on ecu. where abouts is the crankshaft sensor placed??
Thanks

http://www.audi-sport.net/vb/a3-s3-...hot-then-difficut-start-asr-light-solved.html

In this thread the guy replaces the crankshaft sensor and it is where Welly states