My S has started quitting at idle after it warms up. I checked the codes and I did have a couple but after clearing them and having it quit more times there is no check engine light (haven't checked codes again). After searching online it seemed that the purge valve was a likely culpret so I tapped on it every time it was starting to quit and it always revved up & idled again. After installing a new purge valve the problem remains - grrr. Any ideas? I will post my codes below:

564 Turbo/Supercharger Overboost Condition
Error frequency : 149
Distance since last MIL, DBW or EP
0.00 km
Engine Speed
2614.00 rpm
Intake Manifold Absolute Pressure
591.70 hPa
Engine Coolant Temperature
87.75 Deg C
Upstream Manifold Pressure
458.25 hPa
signal out of range
sporadic error
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1592 Throttle Actuator Control Range/Performance
Error frequency : 1
Distance since last MIL, DBW or EP
27.40 km
Engine Speed
708.00 rpm
Throttle Opening
11.72 Deg TPS
Driver Demand
9.02 %
Intake Manifold Absolute Pressure
276.16 hPa
signal out of range
sporadic error
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