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The next thing I did was change out the fuel filter and fuel pump timing belt and water pump just as some routine maintenance. no notable improvements. The one thing about this truck is that I've always had this underlying mistery problem. Poor throttle response between 1000-2500 rpm, extremely poor acceleration (we're talking 0-60 in 23 seconds) and random sputtering/hesitation. With the only code being low o2 voltage since I got the x. Still have not figured it out to this day but I think I'm getting closer.
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