had code for temp sensor faulty were can i purchase these from its the sensor that controls ecu not temp guage

I think you'll find Graham Goode sell the Coolant temperature Sensors

Heres the link - might be what you are looking for ?

http://www.grahamgoode.com/cgi-bin/page.pl?car=subaru&page=engparts.htm


and this is the part you need I believe:

GGS808 Temperature sender unit for ECU pre 1998 cars £35.86