itguy08
Well-Known Member
I'm thinking there's multiple issues at play as well. I think some are piston issues and others may be fuel system or VCT issues. We've seen some bad engines that are getting replaced so it may be one of those things where you do a PCM reflash first and then look at the engine if that does not fix it.If it's an PCM programming issue, I doubt the rattle would be getting worse with more miles on the engine. Some of the 2K RPM rattle might be due to the PCM programming like Ford claims with the F-150s, but there may also be a piston clearance factor in it too.
IIRC The F150 uses the same PWA process for the 5.0 as the Mustang so I'd think they would be just as affected as us.
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