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2001 chevy impala that shudders, sputters, and idles rough

I have a 2001 chevy impala with about 150,000 miles on it. It sat for about 2 weeks and when I went to drive it again it has a rough idle and shudders and sputters whenever I drive it, mainly on acceleration(flat and uphill). kind of feels like its going to shut off because of a lack of gas, but the gas is fine no water in it. I used heet and a fuel line/injector cleaner just in case and still have a problem. It was fine before I parked it aside from random high idle and slight forced acceleration whenever it felt like doing so, once or twice every 6 months or so.

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  • Richard Scordino May 11, 2010

    Check throttle position sensor, clean out throttle body, check fuel filter and clean mass air flow sensor. Get a code test done if problem persists, or you will be chasing your tail on that. Your tank can hold over a gallon of water before it reaches the pump pickup. You would need over two gallons of additive to remove it, and at that point, fuel would be so contaminated by water and additive that it's doubtful if it would even start.

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SOURCE: lack of power during acceleration

HI
Check for a vacuum leak.

Posted on Apr 02, 2009

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If tank got no drain plug either remove fuel sender/pump from top of tank & pump out & clean with rag on a wire (long & tedious) or remove tank & do the same

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SOURCE: Bonneville that sputters with acceleration

my pal jojo had this problem just 3weeks ago and his fix was plugs and wires.hope this helps.

Posted on Feb 26, 2010

01fordeb
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SOURCE: After washing my chevy impala 2005, 2.4l, the

Did you wash the engine? If you did, you most likely have water in the spark plug area or within the plug wires. It don't mean you had to wash the engine, but the water can still get there. It may take it a couple of hours to dry out if this is the problem. I have driven one like this for 20-30 min for the engine to dry it out.

Posted on Jun 24, 2010

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SOURCE: 1995 Ford Escort LX, runs rough inconsistently,

First of all there is a vacume leak, second how is the air filter?, tell the husband to change the MAF mass air flow sensor and I would also change the TEMP tempreature sensor.

Posted on Mar 02, 2011

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