I have a 2006 Carrera, MT, Sport Chrono, and 45K miles...twice today I went to press on the accelerator while driving and got no response! After a couple seconds of pumping the accelerator power was finally restored (with a jolt of course!).

This is the first time it has happended...it was a particularly cold day today, otherwsie all else was normal.

Any ideas of what this could be...is it an fly by wire/electronic issue, or a fuel pump issue, or maybe contaminated fuel...?

Please help! Thanks in advance!