stalling when putting in gear on 1988 topaz on 1990 Mercury Topaz

After traveling for 5 miles or more on highway the car will stall as you stop then has a bear of a time restarting. It happens only after traveling on highway, not in city. Can anyone help please, i cant afford a shop and I fixed all that i can.

Asked by for the 1990 Mercury Topaz
Unfortunately, there is little that can be advised without a diagnosis of some kind. The first thing that can be done is to look at the air intake system for loose connections that can contribute to an unmetered air leak. A vacuum leak could also cause this concer. I suggest going to a Auto-zone to see if there is any trouble codes in your computer.