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Published on Oct 15, 2009
More info here!
If your problem is of another nature, I can't be of any help. My experience with cars starts and ends (?) here. Sorry.
Idle problems on the GDI-engine is in several cases due to an permanent magnet coming loose inside the electromagnet-motor on the throttle body. The loose magnet gets in the way and the flow damper can't work normally.
The symptoms for this is erratic reving or idle, you might feel that the car jumps (kangaroos) in low revs - especially when the engine is cold. It might even put the engine in protection mode with the engine failure light blinking on the dash board.
Fear not, if the problem is the same as mine it's solved in two hours with a dash of glue!
I've done this procedure twice, the first time I used normal 5 minute epoxy resin. This "only" worked for 10.000 km (6.200 miles) before the magnet came loose again. Make sure your glue can cope with long periods of at least 150°C (300°F)!
Also, be careful to put the sensor back in the correct way. I busted one and that set me back some $150 US. Expensive little buggers...