1277 code - Ford Powerstroke Diesel Forum
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Old 04-05-2014, 04:43 PM
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1277 code

I have a 2000 f450 7.3 with 181000 miles.after a 1278 code we determined with swamps help that my injectors were bad.installed the 175/146 and swamps ts tuned chip.dave said id be impressed and I was....for 200 plus miles.the engine light flashed and when I checked with snap on computer it had throwed a 1277 code.i called dave and he said uvch so I replace harness and gasket with ford parts.still no change and 1277 code.i called him back and I told him it was #7 injector and he said no it wasn't but sent me another one.guess what he was right it threw another 1277 hi to low open code and im lost can someone please help this is my work truck which I rely on everyday thank you.
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