The engine warning lamp comes on after driving 3/4 mile. If I then swith off and wait 3 minutes the engine warning lamp will be off. I can let the engine fast/slow idle for an hour and the light does not come on. The engine seems to run ok and will rev freely and will also drive normally even with the light on.
There is no smell of unburnt petrol comming out of the exhaust.
It is a 97 Sportrak.
Any help would be helpful as nobody near where I stay has a plug to connect for reading the fault codes.