11.45 mpg in town 16.847 mpg hwy..what's wrong!!
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a very dirty IAT sensor would cause your fuel mileage to plummet. On your 03, I believe its located just aft of the air filter box. In fact it should be attached to the lid of the stock air filter box. Its held in place by 2 small torx screws, and has a 2-prong electrical connector. Try cleaning it, carefully with a q-tip and rubbing alcohol. If your using an oil type air filter, the IAT will become covered in oil residue and fine dust, hampering its effectiveness. Give that a try. Also, check your tire pressure. Have you given any thought to wearing/ worn wheel bearings, extremely dirty brake calipers preventing your brake pad(s) from receding and causing it/ them to drag abit on the rotor(s)? How about a slipping trans or converter? Just thinking outside of the box......
Last edited by Bigg Redd; 05-11-2016 at 02:40 PM. Reason: Forgot some info.
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Jet A Fuel (05-13-2016)
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I believe I do have an excessive amount of brake dust showing on my rims but the truck coasts fine and just once in a blue moon if I let off the throttle and let go of the wheel it will pull just ever so slightly to the right, the pads are new from when I bought the truck, I chalked it up as shitty pads the dealer put on, since they've squeaked since I got the truck
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