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Thread: EGR valve
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Old March 28th, 2006, 04:03 PM   #20
'96 360 sport 4x4
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Originally Posted by noodles
see if autozone can watch it on the scan tool, to watch it cycle. you might be able to do a bench test but i cant think of how right now. i can look this weekend in my manual. but i always run the truck and just watch it switch from rich to lean mode on the scan tool.
so if i hook up a scan tool, if everything is operating correctly it should start out rich and then swith to lean, and if it is broke it will just start off on lean and stay there?
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