I have been having trouble starting my 1996 Chrysler Town & Country minivan lately. I had my battery checked and it was just under the 3 yr warranty and so Sears replaced it last week. All seemed fine until yesterday when it hesitated but did start. This morning the same thing but started on second time. I stopped to get gas and then could not start it. I tried intermittently for 20 minutes and then had success. Any ideas?