One problem related to axle banjo housing has been reported for the 2004 Ford Explorer. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Ford Explorer based on all problems reported for the 2004 Explorer.
There is a whine or "howl" coming from the rear axle of our 2004 Ford Explorer with less than 9000 miles on it. We brought it back to the Ford dealer in camdenton, mo where it was purchased and explained the problem that there is a loud whine coming from the rear axle at speeds between 50 and peaks at 62. They said that they were having problems with those and said something about that it would probably need a rear pinion seal. After having the vehicle for two days and having given us the impression that it was going to be fixed, they said that the problem isn't bad enough to warrant repair and that it needs to be broken in longer. I was told that twice, once on the phone and once in person when I got there to pick it up. I told the man that I didn't believe that and that the whine is getting worse, not better.