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Idle surge

(1990 Dodge Caravan)
in Fort Lauderdale, FL on August 24, 2010
just started erratic idle, will idle ok for few seconds the it tries to die and recovers. eventually it will die at idle. No codes set
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on February 18, 2011
egr! or bad fuel pump
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on February 18, 2011
egr! or bad fuel pump
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on April 02, 2011
sometimes it bad gasoline...water vapor that accumulates in the ejection line or breather bell housing I think might be another cause for that. It happens to me on very rainey wet type of conditions or near an empty tank where perhaps water might accumulate and mix with the gasoline.
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