So. The problem - stalls quite often, mostly in car-parks. And throws up P0130 - O2 sensor preheating circuit fault. And it idles at around 800 rpm - up from the 680-720 range when the crankshaft sensor was replaced.

I've tried - proper service, new plugs, leads, coil-pack etc. It's had a new lambda sensor in a new manifold (thread stripped). New crankshaft sensor and the weird phonic wheel reset procedure.

Any ideas what to try next? I want to get it running right before it dies and strands me somewhere - it's a daily driver.

Thanks in advance!

Graham

It could well be the oxygen sensor. There’s usually 4 wires going into them, 2 will be black, they are the Heater circuit, unplug the sensor from the loom and check the resistance across these 2 wires, should be low, like 1-4 ohms... if it’s open circuit then it’s a good indication that it’s goosed.
Marty.

Is the oxygen sensor different from the lambda sensor? If so, where is it?

Thanks!

Graham

Same thing.... on the exhaust somewhere, some cars have them before and after the cat... some only have 1