I Have A 2004 F150 Crewcab Lariat Starting At 45 Mph To 60 Mph When Accelerating There Is A Whine In The Rear End .truck Was Built In Kc In 2/04 Purchased In 4/04 Have 10300 Miles On It. Ford Says That They Are Working On A Fix? Has Any One Had This Problem And Had It Resolved The Dealer Says That They Have To Wait For A Fix From Ford . Second Problem Heater Radio And A/c Go Dead Dealer Has To Reset It.

 

I too have the dreaded 'whining' noise coming from the rear end. Mine was also built in K.C. at about the same time. My F150 SuperCrew has been in the shop several times now for the whining problem.

In late July, Ford advised dealers that they are 'working' on a solution and told dealers to stop replacing various parts in search of a solution. I've told my local service advisor that I plan on staying on him until it is resolved. He told me that they have tried replacing everything from shims to rear ends, transmissions, etc. but nothing has been a permanent fix to date.

I finally decided that I would rather Ford come up with a permanent fix instead of the local dealer just replacing parts at random. I'm patient.....for now.

Mark

 

I have the same problem. Dealer is repacing ring gear and pinion when parts come in. Will let you know if this fixed it. I don't feel that this will permanently fix the problem but it's step 1. Have 18,000 on it