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5.4 issue
5.4. Had a plugged left converter. Also replaced plugs and coils. Hooked up to my scanner. My issue is barametric pressure. Reading 13.5 psi and 126Hz. Hooked it up to my 05 mountaineer and 08 F250 on both read 14.5 and 156Hz. That is right for my area. 13.5 is supposed to be for 5,000 feet or...- Fastlane429
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- Forum: 2nd Gen Ford Expedition Engine & Performance
