2007 Lincoln Navigator Repair Question
Runs great until power loss at 3000 rpm. what problem could cause this symptom without throwing codes??
Have you had it scanned for soft codes, which won't cause the CEL to illuminate. Check the catalytic converter, it may be plugged.
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I got the same problem with a 2005 navigator. i ve replaced catalytic converters but there was no change. Please help
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check your fuel psi @ idle and driving it should maintain 65 to 71 psi
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