i have a 93 jeep cherokke i went muddin n rite before i waz goin to leve i hit a puddle of water n car turned rite off, turn bak on no problem bt now if im driving it n im slowing down it idles at around 200 rpm and somtimes turn off, i changed spark plug wires n spark plugs and its still doin it, i have to give it alil gas just so it wont turn off now,plz help me