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Old 03-21-2016, 05:50 PM
j cAT j cAT is offline
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Re: 94 k2500 no low end power and horrible fuel mileage

so you have a OBD1 scan tool ? so you can chart out O2 sensor voltages / fuel trims/ map/ and timing on a OBD1 Gm vehicle ? what is the tools model number ?
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