My 98 Mystique does this a lot, mostly during warmer weather. I just have to stand there filling it manually at a lower rate - even the lowest notch on the auto fill is usually too fast to leave it unattended. It probably takes me 5-6 minutes but nowhere close to an hour.
I know it is the flapper but I just haven't gotten around to fixing the problem. Has anyone replaced theirs on their own or is this something a dealer should tackle? I've replaced my own struts, removed and cleaned out the LIM/UIM, etc., so I'm somewhat mechanically inclinded. Is this something I could do myself without a hoist or special tools that would probably cost as much as the repair done by a shop?
