My FX4 with a 5.4 has a moan that can be heard at idle and gets loder with engine speed (RPM). At 60 mph, I can really hear it iside the cab, sound like an Alternator P/Steering moan ? has anybody heard this on your truck?

 

sorry for the spelling errors, too early in the AM........

 

Sorry I am no help on the sound in question. I would however take it in to dealer and have that checked out. Sure does not sound normal to me.

ViperFX4

 

Take it to your dealer and have it checked.