Can someone tell me the exact location of the coolant temp sensor on a 1990 4x4 Cosworth. I believe it is on the back of the head between engine and firewall but cant for the life of me see it. Want to replug/contact clean conection to see if it improves an intermittant problem where car will be idling and suddenly start reving erratically and running rich (black smoke from exhaust and missing/farting about) My heater is bypassed and there is a hose running behind the engine so this may be hiding the sensor.
Also a couple of questions about reading fault codes. Does the ECU store codes from an intermittant fault like this or would I have to read them while it is faulting. Also I am guessing you cant drive around with the link in the connector for the code reading so you could read it when the problem happens.
Thanks David