I just checked on my 05 w/5.4 and it works.If it makes you feel any better,it is always the same reading as the ECT everytime I've checked.On my powerstroke,they always read different though.So be glad its a gasser I guess.
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early 99 f250 powerstroke ddp stage 1's, php tuned, 6in 35's,tymer knock off,single stack,adrenaline and 05 f150 Custom tuned by PHP
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