I have a 2010 Transit Connect XLT. We drive it and shuts off and wont start backup for about 20 min. It always will shut off about 10 mile drive and turn back on after letting it sit for 20 min. I changed the spark plugs, the coils, not the fuel pump it kicks on. I take off the air intake and spray starting fluid and it wont turn on, weird af! What else can I do? I check all fuses and I found the fuel pump reset, not it! Help me understand wth is wrong. Mechanics worthless.