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					Originally Posted by  HardcoreZ28
					 
				 
				Nah....I just did mine.  Keep the new sensor handy and when you pull the old one plug the hole with your thumb for a few seconds while you grab the new sensor.  I lost less than a quart of coolant doing mine. 
			
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 thats how i did mine, works well, only lose a cup or so if your fast.