Rover 825 Sterling Coupe problem

I would look at the power steering belt, tensioners and lastly the pump, then the rack. It will be one of those, not much help I know, but it really is something that the mechanic needs to experience. When I get a car with a problem like that, I keep it and use it for a while till the fault shows, diagnosis is then easier.

Mrcheerful

As the OP said that "the car suddenly started to slow", might it be the case that the engine is cutting out? The usual reaction is then to depress the clutch, leaving no power steering.

Chris

It's an automatic (something I should have mentioned before).

Tim

it is all surmise really, it needs to be experienced, like the customer of mine that said the horn sounded when she turned a corner. It took me a while to establish (by driving the car) that the head gasket had gone !! The noise was not the horn, but the radiator cap releasing pressure. I have to say it did sound like the horn, but imagine being asked why the horn sounds when I turn on a newsgroup, you would never get the right answer.

Mrcheerful

the other complication I have remembered is that this model has speed sensitive power steering, so there is a load of electronics to deal with too.

I thought it was only the Honda Engine 827 that had power sensitive steering?

It was an 825 that I saw it on, although it had a strange history so might not have been a standard car, so you might well be right.