Hi. Does anyone know what sensors work and report back to the ECU at the stages of starting up the engine from cold to Normal Temperature? I have a feeling that I might have a faulty sensor (hoping its not an ECU problem!) as I have problems at about 5 minutes into a journey but only when the engine is started from cold. The engine 'kicks'/misfires once' as I say only happens when engine is warming up. Doesn't do it if engine is already warm and I go out in the car - very strange. Also what sensor(s) send back info to the ECU to say that its warmed up enough to turn the choke or fast idle off (if it were a normal carburettor engine but it isn't!) because maybe this is faulty. There is one sensor on the drivers side underneath the Throttle Body and its going into a black plastic housing its held in by 2 torx screws what does that do? its about the best I can explain it at the moment. Next time I get a moment I will take a photo of it and post it up on here Any advice please on any of the sensors? - I wish I could get a Haynes workshop manual on these car but unfortunately they don't produce one saying that they don't produce manuals if the car has not sold enough quantity to make it viable to bring out a manual! My car: Mk3 SEAT IBIZA Bog standard 1000cc MPi (multipoint Injection Engine) Year 2000.