[Offgrid]

I'm having another go at fixing the high idle speed and high relay temperature. All the diagnostics and info seem to indicate that I have a faulty oxygen sensor. So I bought one specifically for a 1990 estate with a B200E engine. However, I can't find it on the car. I don't have a cat ( no jokes about the car being a dog please ), and there are no sensors on the exhaust manifold or pipe. In fact there are no wires in that area at all. I've looked on the saloon ( B230E ) and that doesn't seem to have one either.

Can I assume that neither car has an oxygen sensor, or is it located somewhere else. I have searched the forum, and all answers seem to indicate it should be in the manifold.