Scan Master #'s?

1buick

Member
Joined
Jul 16, 2006
When my 87gn is at idle my scan master #'s fluctuate from the 100's to 800's. Is this normal?
 
I assume you are talking about the 02 milivolts? Yes, that is normal. Pay attention to that number at WOT at the top of third though.
 
Is it ok for the scan master to go lean and then richen up after a few seconds.
 
O2 #'s will fluctuate around alot, post your all your scanmaster #'s with the car warm and idling. We will be able to get a better read of things by your scanmaster #'s.:)
 
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