pulling up to the lights and stalling...


sounds like the idle passages might be blocked, and the poor AAC valve cant open far/long enough to raise the idle under load.

A quick test is to start the car, and remove the connector from the AAC valve (fat green or brown solenoid valve on the idle control block). The revs should not drop much. if the car is struggling, then try to adjust the hexegon nut on the idle block, until the revs raise to 700-800rpm. Then reconnect the AAC valve connector.

It would be best to carefully remove the Idle control block (as I call it), and give it a complete cleanup.


could also be a hole in the booster, if you have one.