I am trying to get my 93 K3500 7.4 to run smooth. I have done a lot of shot gunning tune up parts and just now purchased an ALDL cable and am trying to learn TunerPro to see what the live data looks like. Very rough idle at cold start, then runs OK.. At steady state drive I get a shudder, but will accelerate fine if I get into it. She has poor gas mileage, but that seems standard with these.
Well hello again and wish me luck.
David
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