The following is on a 2007 Canyon WT, 2.9 L, Stick Shift.
Last week we changed the fluid on this differential and put .5 quart of Lucas Oil Stabilizer followed by another quart and change of lucas fully synthetic 75w-90. We didn't RTV the gasket but torqued the bolts to 240 in/lbs (20 ft/lbs). This seemed really light to me but couldn't find any other figures on it. We didn't put loc-tite on it if that matters?
My dad drove the truck home 60 miles away and it was fine the first 3 or 4 days after we did it. As soon as I borrowed the truck I started hearing this noise develop. It was very quiet at first grew into an audible growl.
The noise is a mix between a growling and a cracking.
It makes the growling noise in the following situations:
- Not in first gear (I don't think the diff is moving fast enough)
- While you're accelerating in any gear
- Especially when you're already in a gear(coasting) and then press on the gas
So we drained it and I've come up with three potential probems of what it could be but am unsure about where to go.
1. The differential wasn't agreeing with the Lucas additive
2. The differential was low on fluid due to bad torque settings or lack of RTV
3. Something metalic was rubbing on the differential from the outside
- A brake line?
Also, do you think these wear lines are normal on the inside of a differential? I'm worried that these lines in the differential were somehow linked to the grinding noise I was hearing. Any light that can be shed on where to go from here or the cause of these lines would be greatly appreciated.
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