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jancie simpson
jancie ... 6/7/2011
2003 Lincoln Navigator Base 8 Cyl 5.4L - Steering & Suspension
There is a humming in the back end. What is it?
While riding I can hear a loud humming in the back of car. Some say it's the rack and pinion and other say it's the back end. Help what is it?
1 Answer
  • Jimm
    Jimm 6/10/2011
    The rack and pinion suggestion is referring to the steering - this would be located in the front of the vehicle. Does the noise change in pitch, or get louder / softer with speed? Have you checked the rear differential lubricant level? Try the 'Diagnose' tab on this page to assist to describe the problem.

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