Engine Performance problem
1995 Pontiac Bonneville 6 cyl Front Wheel Drive Automatic
Hey Guys I have a 95 bonneville with a 3800 series 2 engine.When the car is cold it starts up great and runs good,but when the car is warm it will start and sputter for 3-5 seconds and then wont start again. If you then release the fuel pressure from the valve on fuel rail and key the pump a couple times it will start right up and run great.I just bought a fuel pressure tester this morning and with key on im only getting 28-30 psi, when running getting 42-44 psi and when pulling off vac hose on fuel pressure regulator it jumps to 48-50 psi.I am assuming fuel pump but was just hoping for your advice first. Thank-you Jeff
1995 Pontiac Bonneville 6 cyl Front Wheel Drive Automatic
Hey Guys I have a 95 bonneville with a 3800 series 2 engine.When the car is cold it starts up great and runs good,but when the car is warm it will start and sputter for 3-5 seconds and then wont start again. If you then release the fuel pressure from the valve on fuel rail and key the pump a couple times it will start right up and run great.I just bought a fuel pressure tester this morning and with key on im only getting 28-30 psi, when running getting 42-44 psi and when pulling off vac hose on fuel pressure regulator it jumps to 48-50 psi.I am assuming fuel pump but was just hoping for your advice first. Thank-you Jeff
Mar 7, 2010 at 9:17 AM