rear end noise still I’ve replaced the differential {old one had shavings in it } now replaced rear brakes and rotors roll rear wheels by hand no noise but even with truck on stands when truck is started and on stands it is noisy like 3 stones in a can
2005 ford explorer xlt
If while driving if the noise is less on acceleration and gets worse when you let off the gas pedal, this is caused from your differential bearings going out.
Remove the rear end cover and look at the fluid, if you see any shinny micro specs, this is from bearing material. The bearings will need to be replaced. Pinion and axle bearing would be recommended. Since you stated you replace the differential, you may want to look into the warranty.
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