Sorry if this is the wrong place ,i am new here. After traversing a rather deep puddle the car drove ok for about 10 miles then when i pulled away from the lights the car seemed to "stumble" ie power droped and it did not want to pull away,after a but of coaxing it picked up and continued as normal but did not like low revs especialy going over speed bumps ,about 100 yards from home it lost power but still kept running so i could coast home. It sarts ok ,runs ok just wont pull away. There are no warning lights or smells or any strange noises. Can any one shed any light on what this could be