Originally Posted by trevCOSS
yes there is a test, stick a volt meter on the signal wire and once its in closed loop you should start to see the voltage fluxuate between something like 0.4 and 0.7 volts, normally if they are knackered they show abou 0.1 volts all the time. you could also do this test with an osillascope but most people have access to a volt meter
wicked, have access to an oscilloscope, but cant be arsed to take it out to the car, voltmeter it is
which one is the signal wire? its a standard cossie lambda sensor
at least if i can prove its faulty i can then justify the cost of a new ford one
