98 Chevy Lumina 3.1L car, cuts out when given gas

1998 CHEVROLET TRUCK
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GLADELLA
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I have a 98 Chevy Lumina 3.1L car and when it sits a couple of days without starting, I start it up fine but when I go to drive and give it gas it cuts out bad and acts like its going to die. Well it also doesnt want to get about 20 mph half the time and it takes forever to get up to speed and it sometimes back fires as well. I had my fuel filter changed by a mechanic and he said that should fix the problem. But then when I go home and dont start or move the car for several days it starts doing the same thing again. What can I do to fix this? Would it be the fuel pump or fuel injector? I've also put the stuff in the tank to get water out and clean it, but its still doing it. What can I do to fix the problem?
Nov 26, 2006 at 5:13 AM
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MATT_522000
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im having the same exact problem with my 91 lumina 3.1 im gonna change the plugs and ive changed the fuel filter but nothing it sits all the time to until my grand am is in the shop then i drive it if you find out let me know .....likewise
Nov 29, 2006 at 6:32 AM
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GLADELLA
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yeah i will let you know something. i will be taking it tomorrow to get the brakes change and will ask them about it. i am thinking its the gas pump or fuel injector.
Nov 29, 2006 at 9:48 AM
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MATT_522000
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well im gonna go change the plugs now ill let ya know if it helps out
Nov 29, 2006 at 10:08 AM
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GLADELLA
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i can save ya some time and tell ya that the plugs didnt help for me. i just changed them about two weeks ago and its doing the same. the lady at the auto parts says its possible there is water in the gas.
Nov 29, 2006 at 10:11 AM
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AMYNJARROD
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Have you ever checked the fuel pump pressure? I've seen them pump enough to start and idle fine, but not put out enough pressure when put under power. It could also be your converter's plugged restricting your exhaust. If it can't breath it won't have any power.
Nov 29, 2006 at 11:02 AM
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GLADELLA
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i havent done that yet no. the only things i have done is change the gas filter and the spark plugs. i buy the gas treatment stuff that includes removing water and after about an hour it seems to work. so i have no clue.
Nov 29, 2006 at 11:14 AM
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AMYNJARROD
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If you unhook your gas line at the filter and turn your key on a couple of times, catch the gas it pumps in a clear bottle and you'll be able to see if got alot of water or dirt. The water will all be at the bottom of the bottle. It's an easy way to check.
Nov 29, 2006 at 11:30 AM
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GLADELLA
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i will do that tomorrow. thank you.
Nov 29, 2006 at 11:40 AM
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MATT_522000
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your right the plugs didnt work she totally died last night so im gonna put a new fuel pump in it and see if not that its the converter which new exhaust got put on mine so i dont knw if they put a new converter on you would think so
Nov 30, 2006 at 5:43 AM
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