2000 gtp wont stay running after start??

**handymontana** · 09-13-2010

Hi guys,
Ok the car is supercharged 3.8 and will start initially and run for 5 seconds then shut right off???
Can anyone suggest anything to look at? I quickly checked for the fuel pump running and it seems to prime when key is forward .....any help please

Thanks,

**BillBoost37** · 09-13-2010

What does the security light do when you try to start it? Can you verify the fuel pump is running after it starts?

**handymontana** · 09-13-2010

The security light is off , it primes when the key is in the on position , when it starts revs fine for 5 to 10 seconds......then shuts off

To check for the pump running while vehicle is on ? How can I do that after its started with a pressure gauge? ? Could it be a relay ?

I appreciate your help !

**BillBoost37** · 09-13-2010

Pull the fuel pump spd ctrl relay and bend either pin 85 or 86 off to the side. (this bypasses the fuel pump resistor). If the car stays running, it's your resistor. You can run the pump at full power w/o an issue. But the resistor is expected to be there to keep from overworking the pump.

**handymontana** · 09-13-2010

Thanks ill try the bypass tonight after work then give you an update ...if this works do I leave it like that or can I replace the relay with a new one to fix it properly?

Thanks again!