1997 Lumina won't start driving for a while
We have a 1997 Lumina Sedan with an automatic transmission,3.1 V6 that we can drive from point A to point B and if we have driven it long enough then park the car, and then shortly return to start it to go back to point A it won't start. We have to wait for at least an hour or more to get it to start. We noticed it is worse during warmer weather but still does it even during the colder weather. If we don't drive too far lets say less then 4 miles, it will start and if we stop anywhere else along the way home, it won't start. My husband seems to think that when the temperature gauge goes past the half way mark, it won't start. We took it to Auto Zone and put it on the diagnostic and there were several options but and mentioned oxygen sensor but no real diagnosis was given, and really don't want to do trial and error with buying car parts to remedy the issue. Any idea what is causing this? The picture I've attached looks just like the one we have but isn't our car.