2005 Focus Idle Problem - relevant inputs to the ecu

2005 Focus
I have an idling problem. When engine is cold the idle is rough and sometimes cuts out. When engine warm and coasting to a halt idle is high at 1800. Only
when the wheels stop does the idle fall to correct value.
Speedo is smooth and correct. Two Idle controls valves fitted - no change.
Investigations have led me to check the power steering and clutch position inputs to the ECU. What do these inputs have on the idle speed?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.