O2 sensor problem.
I have a 97 Chevy with a 350. Threw a code 0137 so I figured sensor was bad and replaced it. Threw code again so I checked the wiring and all was good. I then swapped sensors side for side. Truck then threw a code 0157 for other side. So I figured a bad sensor and bought another. Threw same code again. Sure I didn’t get two new sensors that were bad, so what gives? Any ideas?
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