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Engine miss? Bad valve cover harness?
my truck has an engine miss for the first few miles when the engine is cold. You mainly feel it in the higher gears. I know this is gonna sound crazy but the only way to get it to go away is to floor and you can feel the truck have more power once it clears up also once it clears up it will be fine until the engine cools off again. it also seems like the trans shifts a lil funny when its missing. the ses light is not on it has a new cps, new map sensor. it has been like this for a couple months the cyl cont test showed cyl 3 & 8 bad so i changed injectors in 3&8 but it still shows 3 bad. Could this possibly be a bad under valve cover harness?
99 F250 Crew cab 4wd str8 pipe DIY intake 300k and counting