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Discussion Starter · #1 ·
hooking up an air/fuel ration gauge on my truck. got it in hooked up. when i first start it (cold). the gauge bounces around like it should. once it gets warm it stays rich. the only thing i have done to the truck is an intake and cat back exhaust. i run either the mid grade or premium gas for the most part. i dont know if i have it hook to the right wire on the o2 sensor. any ideas or have a wiring schematic of the o2 sensor. any help is appreciated thanks
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