01 auto civic..d17a2. i let it warm up for awhile before i go. it gets bogged down and suttery in 1st and barely goes. this problem only happens sometimes. if i floor it it pulls out of it..but as soon as i let off it goes back into sputter mode. if i pull over, shut it off, start it back up and let it sit there for a minute and give it some gas it has been ok so far. fuel pump..alternator??? any ideas?