Rear Differential Nissan Titan 2008

2008 Nissan Titan rear differential
2008 Nissan Titian rear differential noise. I have this loud roar noise when decelerating.  I’ve checked wheel bearing they are good . Could it be rear differential? if so what?


RESPONSE

This is a classic description of a failing rear differential pinion shaft bearings(#5 and #9 in image). You give it gas and the noise dissipates until you let off the gas.

Rear Differential Noise

Rear Differentail
Remove or disconnect the following:

  • Rear wheel and tire assembly
  • Wheel speed sensor
  • Brake drum or rotor
  • Brake shoes or caliper assembly
  • Parking brake cable
  • Brake fluid line
  • Bearing cage and backing plate bolts
  • Axle shaft assembly
  • Axle seal
  • Wheel speed sensor rotor, if equipped
  • Lock-washer
  • Bearing lock-nut
  • Flat washer
  • Wheel bearing
  • Wheel bearing cage grease seal

Car differential gear

Some sure signs to look for would be metal in the oil. Remove the fill plug on the rear end and take a sample. You may remove the entire rear end cover to inspect further. Look for shinny metal chips in the fluid. May be very fine in size.

How to diagnose a noise