After warm up the truck starts to run horribly...idle is erratic and drops about 500 rpm, blowing black smoke out the back @ idle and while driving, and when warm over 10 minutes will start to lose lots of power and "moans" and shakes the truck when you step on the throttle. I swear gas is pouring out the tail pipe as a 1/4 tank is gone in about 1 hour of driving...promise! And that's with my foot hardly on the throttle because it runs so bad. I've changed the O2 sensor, plugs, wires, etc...have always used injector cleaner in my gas tanks every 3000 miles since new. 41000 miles on the odometer. I love my truck but it's hurting my wallet very bad:(
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