2005 Grand Prix base model. Starts cold no problem. But drive it for 10 minutes, turn it off do shopping for 20 minutes and the doesn't start.It starts up and dies. This happens 3-5 times. Seems the only way to get by this situation is to give it gas just as it started, but then it revs and makes it emberassing, and yet still could die out!! I've replaced the fuel pump relay, but made no difference. No lights come on so no codes are available. I don't want to change to fuel pump/sending unit and still have this problem. Car runs strong and hard, but this starting issue is a real pain. Any ideas

Car only has 70000kms on it, doesn't have a cap, but 3 iginition modules, wires seem to be in good shape. Timydee, I did say a 2005, plugs are platium and in good shape. Have been using gas additives and injection cleaners, but all to no use. Car only has 70000kms on it, doesn't have a cap, but 3 iginition modules, wires seem to be in good shape. Timydee, I did say a 2005, plugs are platium and in good shape. Have been using gas additives and injection cleaners, but all to no use.

my step daughter has a 2005 Endeavor and one of her coils went bad it cost $126 just for the coil, her SUV had 65,000 miles on it and I replaced all her spark plugs also. She was also leaking oil from the valves. I understood you have already replaced the fuel pump but reading the post again, you did not. Here is a question, when you are driving for a long distance does it like dog down on you or have you ever heard like muffled backfires. If it has then the fuel pump is the problem,or as when it is cold it runs and starts great. once it heats up and gets warm and it will not start or if it does it acts like it is flooding. i would say fuel pump if what i described is/has happened, if not then its ignition: sensor,coil,module or plugs maybe something with the computer, also. I hope this helps Tim my step daughter has a 2005 Endeavor and one of her coils went bad it cost $126 just for the coil, her SUV had 65,000 miles on it and I replaced all her spark plugs also. She was also leaking oil from the valves. I understood you have already replaced the fuel pump but reading the post again, you did not. Here is a question, when you are driving for a long distance does it like dog down on you or have you ever heard like muffled backfires. If it has then the fuel pump is the problem,or as when it is cold it runs and starts great. once it heats up and gets warm and it will not start or if it does it acts like it is flooding. i would say fuel pump if what i described is/has happened, if not then its ignition: sensor,coil,module or plugs maybe something with the computer, also. I hope this helps Tim