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-   -   9 mpg Sluggish (https://blazerforum.com/forum/engine-internal-9/9-mpg-sluggish-70311/)

appliancguy 04-27-2012 08:21 PM
9 mpg Sluggish
 
My 99 was acting bad, 9 mpg seemed to be running rich. Throwing codes for 02sensor heater circuit?? Got new sensors and found the little cuts in sensors plugged with carbon??? Thats a first for me. New parts fresh pluggs and ZOOOOOOOM...she flys again. :icon_steer:


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