I have a 97' Pont. Grand Prix GTP with a 3.8 ltr supercharged. The car will start, run for about 20-30 secs., then die. I changed the fuel filter, it ran great for an hour, then started stalling again. I pulled the the fuel pump, and the pick up is clean. I'm told the fuel pressure regulator could be at fault or the speed control relay could be the problem. The car has 189,000 miles, and has been running great. I've seen no smoke from the tailpipe to indicate a rich condition.
Known GTP problem.
You most likely have a bad fuel pump resistor, which controls 2 speeds of the fuel pump.
To check to see if this is the problem, there is a trick you can do and its very easy to do. Go to the attached link, and bend the tab my finger is pointing at and then plug it back in. If your car starts and runs fine, well we just solved the problem.
Link ->> http://www.boredandstupid.com/relay.jpg
Sounds like bad injectors
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