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sprinkles08, ASE Certified Technician
Category: Car
Satisfied Customers: 21439
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
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Nissan/Datsun navara: i have a navara d21 4x4 td27 manual,

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i have a navara d21 4x4 td27 manual, when powering in reverse or when in any gear forward then lifting off the throttle the gearbox squeaks. I have checked oil levels and fine, sounds like it comes from rear of gearbox in front of transfer case

Hello and welcome to JustAnswer!


Make sure that the noise isn't actually coming from a U joint. When U joint bearings dry up they will give a squeak that is often throttle dependent and worse when accelerating and decelerating. You can remove the driveshaft and feel the joints by hand, if there is any binding then the joint is failing.


It's possible that the noise could also be in the transfer case and appearing to be coming from the transmission.


If the noise is coming from the trans for sure and the fluid level is full then you likely have a bearing failure inside the trans. It's also possible that there could be a spline wear issue between the trans and transfer case, either with the female splines on the transfer case input shaft or trans output shaft. If you're positive that the noise is coming from the back of the transmission area then I would pull the transfer case out and check the splines, if everything looks ok then the trans will either need to be disassembled and inspected or the unit replaced.



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