My question may be related to this other one, but its answer is inadequate for me to be able to diagnose my problem and know what to do to fix it.
When I start my car in the morning (or sometimes after work if I work late), the car starts fine and idles normally. However, once I press the accelerator and pull out of my parking spot, the engine begins to run rough for 3-4 seconds. During this time, I have very little power/acceleration. Then, the engine smooths out, my power is restored, and all is fine until the next morning.
This problem has only recently started; there hasn't been any obvious trigger event, to the best of my knowledge.
What’s going on, and how can I fix it?
2003 Hyundai Elantra