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99 ford

  1. Ford F-Series, Ford Super Duty, Ford Diesel
    hello, I have a 1999 Expedition with a 5.4l with a 4r100 trans 4wd, I luv this truck. it runs great, but lately I've been having issues when it warms up. i can drive it for about 5 miles, but when the engine warms and i get in stop and go traffic i have to rev the engine up to about 2500 rpm...