rt05492

I had the same problem with the idle cycling from nearly stalling back to 1500 rpm and then back again but it was me that had caused it while fault finding. I had managed to disconnect the lambda valve sensor plug and not re-connected it. As soon as I realised and re-connected the plug it was cured.

You can also test whether it's the idle actuator by taking it off the side of the throttle body and then driving the car with the connector still pugged in (keep ECU happy) - has never made nany difference to any of the faults on mine.

This manifold actuator stuff may be getting me close to my cause at last. I had a good look and listen to mine last night and theres a definite chattery air leak noise coming from it as well as the dangling bit of invisible rubber (your mate from the pub may have been right about mine). Then rain stopped play - but I am going to dismantle mine tonight. See new instructions on the latest threads of 'Kangarooing 156'.

If your manifold actuator is stuck in the high rev position it could be why yours stalls when the revs go down but goes like stink above 3k.