I have an 02 4.7 that I bought New. Now 176 K and it still runs like a striped ape. Problem !! 3 years ago I did a preventative maintenance. I replaced the complete timing sets chains, sprockets and guides (Cloyes) along with a new water pump. It runs great as usual, Since then I have replaced...
I’ve replaced the thermostat 3 times and vented the air out, still no luck driving easy, temp normal, accelerate hard and watch and feel the heater air go from hot to cold, then gradually warm up again
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