1995 Buick Century starts, dies

1995 BUICK CENTURY
15,000 MILES • 4 CYL • FWD • AUTOMATIC
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BJOHN958
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my buick starts but then dies imediatly. just removed throttle body base in an attempt to clean and replaced it. it started right up, better response than i've had in a while, but would not idle smoothly, then died after 10-12 seconds. if i start it and floor the gas, it wants to run, but just chugs, then dies when i let off the gas. i,ve been trying to fix it now for several months, but weather and money have kept my efforts to a minimum. i'm now suspecting the idle air control valve, but i'm just guessing. i,d like a second opinion.
Apr 4, 2009 at 11:36 AM
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THETOOLMAN
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That would be a good place to start. I would remove it and clean it. Have you replaced the fuel filter?
Apr 5, 2009 at 2:54 PM
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BJOHN958
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yes, I replaced the gas filter just a few months before it died. put in new spark plugs and air filter at the same time. when it died, I was pulling into a parking lot, had to feather the gas to keep it going long enough to get it parked. my first thought was that it seemed to run out of gas. but I had 1/4 reading on the gas gauge and put more in from a can to be sure. since I posted my question, I've removed the idle air control valve and cleaned it, made no difference. any ides for the next step?
Apr 5, 2009 at 4:02 PM
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THETOOLMAN
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Any chance the gas was contaminated? Did all this happen after the plugs and wires were changed or before?
Apr 8, 2009 at 1:59 PM