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T355 manual transmission failure at 85k curious if summer heat killed it?

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desert_jeep_AZ

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Discussion starter · #1 ·
on July 5th I drove it back So Cal to AZ in the hot sun. I was not cranking the AC, very little weight. 400 mile trip and about 10 miles away from home; the car was making a whining noise. took it back and guessing its a the input bearing.....

I wonder if the extreme desert heat is what broke the camel's back? fluids heated up too much? or just happened to die at 85k miles. no dash lights came on either.

Total rebuild job is needed $3k to $4k in cost estimated. I wonder if the heat was the final straw or random timing? car is a local city car. zero mods, no pulling or anything

I drive it back and forth between AZ/CA all the time too.... frustrating
 
#2 · (Edited)
The 5-spd in my 2014 lasted till 200,000 miles. Of course I'm in a much cooler area than you are. I had my fluid changed in the 100,000 mile range.

When it failed, I replaced both the tranny and the clutch ($6000) with a factory rebuilt so I'd have a warranty. I'm glad I had the factory warranty because the rear main seal failed and the escaping tranny juice ruined the clutch -- it took some persuading but eventually my dealer saw the problem and got them to honor the warranty. I was on a waiting list for the 2nd replacement so it took a couple weeks. It's been over a year. Now at 220,000 miles and doing fine.

PS Full story on my failed replacement here: https://www.jeeppatriot.com/threads/clutch-issue.343894/?post_id=1905285#post-1905285
 
#4 ·
desert_jeep_AZ said:
thanks for the memo. Yes I was hoping to get to 150k miles at least on the trans. I am wondering if the 400 mile commute in the desert 110+ degree did me in? the fluids over heated and the parts crapped out? I am wondering if that was what killed it? no signs off issues until the long commute..... hmmm
Click to expand...
High temps and long trips add extra stress, but those transmissions (especially the 4x4's) have been known to have issues even with normal use. Part of the problem may be the use of sealed bearings (limited lubrication) for the two under the left side cover.

You may have seen this thread already(link below), but the OP's problem started at 81K, then another member stated the same issue at 50K a few posts down, then another member a few more posts down at only 21k:

www.jeeppatriot.com

Input shaft bearing NOT Clutch

Hey everyone, I have been searching for a month for info on the input shaft bearing in the manual transmission patriots. I have a 2011 sport 5 speed. It has 81k miles on it and started making a terrible noise when in neutral and clutch released. The noise went away when clutch was pushed in. I...
www.jeeppatriot.com www.jeeppatriot.com
 
#7 ·
CVTs are certainly sensitive to heat. However, I'm a little surprised at a manual failing that young, but maybe the culprit is the effect of desert heat on the transmission fluid. I've had plenty of manuals and usually all I worry about is the clutch. Then again, I've rarely had a vehicle south of New Jersey. I did go to Skyline Drive in VA (lovely trip) but that was in the fall and on that road one drives very easy.
 
#9 ·
Ignatz said:
I did go to Skyline Drive in VA (lovely trip) but that was in the fall and on that road one drives very easy.
Click to expand...
Yep! The late missus and I drove the Skyline Drive in my Opel on our way back (sort of) from our honeymoon on the Outer Banks to our new home in WNY - in autumn of ‘72
 
#10 ·
desert_jeep_AZ said:
yes 115 degree desert heat for 400 miles in July. I am thinking that killed it... sigh
Click to expand...
I always thought manual trannies were immune to that sort of thing. Then again, except for one visit to AZ using a rental car, I've never had to cope with such conditions. Was it possibly low on fluid?
 
#11 ·
My 2016 died around 107,000 miles but I was hard on it. Had input bearing replaced at 45000 miles. Eventually a crack formed on trans and it went by by. But you noted output bearing was bad and then said needs a total rebuild. The two bearings are a relatively easy job. I replaced mine. You tube has videos on how to do it. So just because the whining bearings are bad you don't need a rebuild. Hope this helps. Good luck.
 
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