thanks for the replies guys,
cartech; ta for the info, I do however know how to test the lambda sensor mate
tested it tonight with engine warming up, at 2,000 rpm h2os switching 0.8-0.1 volts, not as quickly as it should but that would explain the helping hand needed to pass the fast idle test.
when you then blipp the throttle and then let it settle to idle however, the h20s signal falls to virtually zero signalling the ecu to richen up the mixture, hence the idle test fail, cos the signal stays at 0.021v approx while at idle but gas readings are as above.
looking at a lambda sensor then hopefully!
tried to "pull the codes" TM using my trusty solus, no joy, although this car has no downstream lambda sensor, so no eobd or obd requirement then?