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					Originally Posted by  GaryF
					 
				 
				Give the idle screw a tweak clockwise, the idle is too high and the ECU thinks you must be engine braking and is cutting the fuel. 
			
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  That is also an option.  Screw it in all the way counting the turns so you can return it to the original position as a starting point.  Then unscrew it and clean it.  I have heard of contamination on the adjuster causing problems.  Idle warm should be around 700 to 800.  I like to split the dif at 750.  Hopefully when clean the screw  will need adjustment engine warm.