I've been doing a lot of front end work the past 2 weeks, searching out a sound I had. So you might have seen about 50 posts from me lately asking random questions, sorry
. I can't hear my original noise so Im praying it was front U-Joints I replaced, but maybe I just can't hear that noise because now I have this horrible loud humming noise when I let my foot off the gas and coasting around 30-50 mph.
For background, both DS were rebuilt 6,000 miles ago, this week I just did both front axle u-joints, passenger upper Ball Joint and replaced bushings in my front shocks. I can't help but be paranoid because these u-joints and ball joints were the first job I've ever done completely alone. Don't get me wrong me and my dad have done pretty much everything on either of my last 2 jeeps, but now I'm down at school trying it by myself.
I didn't notice the sound until the day I put in u-joints and that ball joint. Even then, it was not bad and barely noticeable. Now it is so loud that it goes over my radio, and its only when decelerating. So I take my foot off the gas and the sound comes in, then I can barely barely press the gas pedal and it will completely go away. Its from about 25-50, but I notice it to be a little bit louder when coasting up at 50.
From what I've been seeing, a lot of people seem to be told by their dealer that the sound is normal... wtf... definitely not normal. Its almost like my tire humming, but way louder, and controlled by accelerating/decelerating. Anyway I see a lot of talk about it coming from the rear Pinions, maybe a bearing going bad. How can I pinpoint front or rear diff?
Also fluid was changed in rear about 3,000 miles ago and I inspected for any tooth damage, and front diff was changed today. How much can I expect for a mechanic to diagnose if its a pinion bearing, and then replace it?