Attention: TDR Forum Junkies 
Recently at initial start up the after my truck has sat for a day or two the engine idle RPM fluctuates approx. 100-200 RPM. After it has been driven / warmed up it idles normally. If the engine is shut off & then restarted it idles normally. Any ideas. Thanks for your help. The truck is a stock 2002 Ram 2500, diesel engine 2WD with an auto transmission and 80,000 miles on it
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