O2 Sensors Bad?
How do you know if your O2 sensors are bad. I'm getting horrible mileage, and have completed a full tune-up. Is there any way to check them? No check engine light, and no codes on the scanner. Any Help. Thanks.
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91 GT, T-5z, B&M Ripper, 3.27, 2 1/2 MAC cat-back, 3 core rad, 180 thermostat, KYB's, 245/50/16 all around
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