1998 Ford Explorer Rear End Hum
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1998 Ford Explorer Rear End Hum
My 1998 Explorer 4WD has a hum that is coming from the rear end. The hum is simultaneous with pressing on the accelerator. When my foot is not on the accelerator it goes away. When i press the accelerator it comes back.
It seems like this hum developed after I had the fluid in the tranfer case replace. I had it replaced again (for free) for fear that they used the wrong fluid and it still makes the noise.
Pulsing the accelerator such that I basically maintain the same speed (70 mph for example), i can hear the hum come and go with each pulse.
It could be something with my muffler but I did not see anything obvious.
Thanks for any help
It seems like this hum developed after I had the fluid in the tranfer case replace. I had it replaced again (for free) for fear that they used the wrong fluid and it still makes the noise.
Pulsing the accelerator such that I basically maintain the same speed (70 mph for example), i can hear the hum come and go with each pulse.
It could be something with my muffler but I did not see anything obvious.
Thanks for any help
Senior User
Joined: Jun 2002
Posts: 279
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From: Brighton, Colorado
Wife's 99 Mountaineer does the same thing. Guy at work had two company explorers. Both did the same thing.
I think it's the 3.73 truck gears and is inherent by design. Only difference is in a truck the rear axle is outside of the cab and you can't hear it.
Sound far fetched?
I think it's the 3.73 truck gears and is inherent by design. Only difference is in a truck the rear axle is outside of the cab and you can't hear it.
Sound far fetched?
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