Problem seems to indicate a fault with excessive fuel rather than fuel pump or clogged filter.
The eractic idling after difficult start up is due to excessive fuel in cylinders and it is burning rich which would emit a strong smell.
The engine surging at idling before stalling followed by difficult starting could be due to the fuel injectors providing excessive fuel and when it floods, it stalled and caused the difficult starting which requires the accelerator pedal to be depressed to allow more air to lean out the system.
As the problem is intermittent, it is not easy to pin point the cause and even if you send it to the dealer, you might not get any results unless the problem occurs then.
Do you have any issues with fuel consumption or engine performance?
When engine stalled, did the dash indicators lights showed?
Monday, August 3rd, 2009 AT 4:16 PM