Hi! My name is Brittany. I am a poor student who's 1987 Bmw 325i was in flood water up to the bumper...it was pushed out of the water in about 10 minutes. I have driven since, but now it has an idle problem where the rpm is racing up and down. Then when I'm a stop and slowly speed up it studders about three times and then speeds up. Almost like it can't change gears properly? I have unplugged and replugged everything! I even put fuel cleaner in the gas tank and filled it up with 10% ethenal gas....sorrry can't spell. What and where could the problem be. If anyone can help me God bless you and I can not thank you enough.