Symptoms: Intermittent 300 codes when it rains. What else can I try?
What is your question?
Van bucks and idles rough after a rain. Replaced fuel pump, rotor, coil, distributer and cap. Also replaced spark plugs. Ran great till it rained. Intake gaskets already replaced and injectors cleaned. Any suggestions?
What makes this problem better or worse?
Rain makes it worse
How long has your 2000 GMC Safari had this problem?
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