What is wrong with my 02 grand prix?

Question

OK i start my car and it runs fine.. When i am sitting at a dead stop and go to take off real fast it is fine it gets up and it goes.. Now if i am driving at like 50 mph or so and i hit the gas to take off it cuts out and starts to sputter and doesn't want to go nowhere when it hits about 3700 rpm's.. Thanx for your time....

Answer 1

it,s good if you start out slow, you say? change the gas filter, it,s probably getting plugged up some.

Answer 2

my answer is try to check it out first on auto repair shop...

Answer 3

If you haven't changed your fuel filter in a while try that. Otherwise a fuel pressure check, and/or some tests on the fuel pump should locate the problem. Sounds like your fuel pressure regulator is probably OK, but there may be a problem with volume of fuel being delivered. If you can find a good shop with an oscilloscope that knows how to test a fuel pump with it, they can easily do some pretty advanced tests to make sure the problem is fixed right the first time. Could be that your pump is getting weak, and slowing down.