Lumina stalls restarts after sitting
My daughter'* 91 Lumina will run and drive fine. After about 5 or 10 miles it dies but will restart after a few minutes. I have checked the fuel pressure and it is within spec. I would like some direction before I start replacing parts. It has the 3100 engine with about 140,000 miles. It appears that the fuel pump has been replaced because I found a homemade panel in the trunk over the fuel pump. Apparently they did not want to lower the tank and just cut into the trunk floor to gain access.