[Shop-talk] Manual transmission issue???

[neiljsherry at talktalk.net]

Being only in higher gears suggests the gearbox - if it was the diff that would surely be the same in all gears - potentially more in lower gears due to increased torque. My bet would be on layshaft bearing at the end of the cluster closest to where the higher gears are. Can't see how it would suddenly appear after shop visit though, unless they did some really stupid like draining the fluid and driving it before refilling - or wrong grade fluid and damage done so the second change didn't fix it.

On 25 May 2025 16:15:27 BST, Moose <eric at megageek.com> wrote:
>Jeff, this is a good idea.  Will do.
>
>The reason I'm really confused is that the noise is only when you give it 
>ANY throttle.  So even if you are not accelerating (i.e. Not under load.), 
>but just have the pedal down a little, you hear the noise.
>
>Wouldn't both the differential and drive shafts make noise all the time, 
>or at least under load?
>
>But I plan to do a much deeper dive.
>
>Thanks again to everyone with this.
>
>Moose
>
>
>
>From:   Jeff Scarbrough <fishplate at gmail.com>
>To:     Moose <eric at megageek.com>
>Cc:     "shop-talk at autox.team.net" <Shop-talk at autox.team.net>
>Date:   05/25/2025 11:03
>Subject:        Re: [Shop-talk] Manual transmission issue???
>
>
>
>Have you checked the differential(s) and drive shafts?  My TR6 had an 
>annoying transmission noise that, after a rebuild, turned out to be in the 
>diff.  
>
>Noises in a car are notoriously hard to track down by sitting inside.
>
>On Sun, May 25, 2025, 08:47 Moose <eric at megageek.com> wrote:
>Braintrust, 
>
>I don't mess with transmissions at all, so I'm in the dark here.  
>Hopefully someone has the answer and it's an easy fix. 
>
>The issue,   2017 Jeep Patriot with a 5 speed manual transmission makes a 
>'whirring' sound when driving in 3rd gear or higher. 
>
>Started about a year ago, when car was picked up from a franchise mechanic 
>shop.  (owner of car is a single woman without much money.) 
>
>When she called them back they where like, "Well, we would have to charge 
>you to look at it."  So since she already suspected they caused the 
>issues, she didn't want to give them more money. 
>
>She brought it to another shop and they said, "You need a new 
>transmission."  That will more than likely exceed the valve of the Jeep. 
>So they just did a fluid change, and that was it.  Note, in their carfax 
>report, they listed that they "installed a new transmission" in addition 
>to the fluid change, so I don't trust them either. 
>
>It's a manual 5 speed.  I checked the fluid level and it is exactly where 
>it should be.  So I did a road test. 
>
>Here is the crazy part. 
>There is NOTHING that I can feel that would indicate any transmission 
>problems.  No slipping, no chucking, it shifts smooth and pulls strong.  
>No vibrations.  The only thing is that noise, and that ONLY happens when 
>you give it throttle. 
>
>So if you are going down the street at 50, and take your foot off the gas 
>pedal, noise goes away. If you just give it a little gas, noise returns. 
>
>If you have it in neutral coasting, no noise.  If you are engine braking, 
>no noise. The noise is ONLY if you have your foot on the gas in the 
>slightest. 
>
>Note, there is also no noticeable noise in 1st or 2nd gear. 
>
>I am thinking that the original shop did something to the car to make it 
>start this noise, knowing she would take it back there to get it fixed and 
>that it's a simple fix. 
>
>I would love to be able to fix this as it is a hard working girl that 
>doesn't have much money and really takes care of her car.  She is also a 
>good friend of my fiancee, so it would be bonus points for me. 8>) 
>
>Thanks and I hope everyone takes a moment to think about all the Soldier's 
>that gave their lives to protect our freedoms, (no matter what country you 
>are from.) 
>
>Have a great weekend! 
>
>Moose_______________________________________________
>
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-- 
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