Question about 2004 Ford F250
This is normal, it may not have made this sound before and now it will after an ECM re-flash. I'm not sure what they changed durring ECM updates to Fords but I do work for international which makes the engine. I have heard of this complaint several times and I've also heard of alot of complaints about a lack of power associated with it. The best way I can explain all of this without knowing what ford changed is that they must have lowered the amout of boost pressure allowed durring certian events. This is done by venting the boost pressure which makes the sound your hearing. I know plenty of people that have complained to Ford about this and none of them seem to get a good explination from Ford. DONT always blame the dealer though. If Ford is anything like International they don't always release a full report on what they are changing in an ECM and why, we just get letters saying we need to re-flash an ECM when we pull up the VIN number when a vehicle pulls onto the lot.
Posted on Apr 18, 2009
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