my 95 Buick roadmaster starts up an shuts off. i changed the fuel pump the fuel filter is fine. can anyone tell me what might be wing????

Spray some starting fluid in the intake to see if you have a fuel or spark problem.

I did that and it does the same thing before and after changing the fuel pump

fuel pump pressure is fluctuating perhaps down to zero-

there has to be a way of testing the output of the fuel pump.

Doesn't this design have a fuel rail with a shroeder valve on it?

fuel pressure regulator?

What's going on with the fuel delivery?

may be a security issue

What's that

Jimmy seems to think that your security is shuttin' you down- Do you have a fancy ignition key?

Yup the one with the chip

right on Jim, does this problem exist, even when this key is used?

Yup both set off keys I have has chips in them

http://www.partsgeek.com/gbproducts/MC/2710-07038507.html?utm_source=google&utm_medium=ff&utm_content=MC&utm_campaign=PartsGeek+Google+Base&utm_term=1994-1996+Buick+Roadmaster+Fuel+

was the FPR?...god bless.