Matt Lewis sells the sensors(CTS) seperately, it is a good idea to change it every couple of years anyway.
You could always buy a resistor(about 10P) and insert in the CTS plug so that the engine gets a fully hot signal, the resistor should be between 0.50K ohms to 0.30K ohms.
This wil simulate a warm/hot engine signal from CTS, or better still buy yourself a RESISTANCE WHEEL, for diagnostic work, about £6/8, few leads, job done.
tabetha
MATT LEWIS 01922 692424