can anyone help?
i need to know where the first lamda sensor connects to. the one after the manifold before the cat. obviously i know it screws into the exhaust but i can't find where the cable connects to. Anyone know?

What model Punto you talking about. I have a workshop manual CD for MkI's. Could see if i could email the PDF file of loom diagram if this helps you?

its a mk2 1.2 16v. i don't know if it will be the same?

No sorry, it's a different manual for that, well as far as i'm aware. Got my manaul off ebay for like 99p.... been priceless!

It connects to a 4 pin plug which should be stuck onto a little plastic clip which is mounted on the front right side of the engine, the plug itself comes from a loom which runs under the coil packs, on the right hand side and back to the main wiring harness.