Hello, I have a 1999 Grand Cherokee Laredo. In the last few months it has started stalling while I am driving. It has happened while I was driving on the interstate and while slowing down to stop. Usually I can shift into neutral, crank and shift back into drive and resume. A few times I have has to stop for a couple of minutes then it would crank. I want to sell it but would like to take care of this first. And suggestions or advise would be greatly appreciated. Thanks so much.