Opinions on the manual transmission

mgroeger

Well-Known Member
First Name
Mike
Joined
Feb 1, 2018
Messages
4,449
Reaction score
5,764
Location
Hurricane, UT
Vehicle(s)
2018 JLUR "Fat Ninja", 2020 Acura RDX A-Spec
Occupation
I make microchips for a living.
Vehicle Showcase
1
Unbelievable. I tried this today, and it's like a whole new vehicle. Wouldn't have thought that disabling hill start assist would greatly improve off the line clutch feel, and also slow parking lot speed throttle control.
Wow, I can't wait to try this. How in the world does the brake assist being disabled effect the clutch?
Advertisement

 

unsavory

Well-Known Member
First Name
Jimmy
Joined
Sep 17, 2018
Messages
260
Reaction score
202
Location
California
Vehicle(s)
2019 JLUR
Wow, I can't wait to try this. How in the world does the brake assist being disabled effect the clutch?
No idea, unless it's just a horrible implementation. No loss here, as my hill start assist wasn't working anyway.
 

mgroeger

Well-Known Member
First Name
Mike
Joined
Feb 1, 2018
Messages
4,449
Reaction score
5,764
Location
Hurricane, UT
Vehicle(s)
2018 JLUR "Fat Ninja", 2020 Acura RDX A-Spec
Occupation
I make microchips for a living.
Vehicle Showcase
1

sf5211

Well-Known Member
First Name
Steve
Joined
Jun 14, 2019
Messages
1,472
Reaction score
1,975
Location
Bronx N.Y.
Vehicle(s)
New 2019 JL
Occupation
Plumber
Vehicle Showcase
1
Hey guys, I wanted to also try shutting the Hill Assist to see if there's a difference. I've seen it before but for some reason couldn't find it this morning. Please refresh me on the steps. Thanks in advance.
 

unsavory

Well-Known Member
First Name
Jimmy
Joined
Sep 17, 2018
Messages
260
Reaction score
202
Location
California
Vehicle(s)
2019 JLUR
It's under vehicle settings, and then something like Safety and Assistance. Going off memory here, so might have the names slightly off.
 

WreckEm711

Well-Known Member
Joined
Jun 21, 2019
Messages
335
Reaction score
814
Location
Lubbock, TX
Vehicle(s)
2020 JL Sport 6 speed
Tried this, didn't notice any difference other than that I was stalling from a stop more easily so I turned it back on.
 

geem03

Well-Known Member
First Name
Gary
Joined
Oct 19, 2019
Messages
801
Reaction score
2,078
Location
New Brunswick Canada
Vehicle(s)
2019 Jeep Wrangler Sport
Occupation
RN/ Firefighter
Vehicle Showcase
1
the recall is misdirected into believing the problem is brake hydraulic oil leak into the clutch assembly but the problem is obviously somewhere else when there is no oil loss and the clutch still smells just like burned clutch does
I still get that....
 

DanW

Well-Known Member
First Name
Dan
Joined
Mar 2, 2017
Messages
7,605
Reaction score
9,700
Location
Indiana
Vehicle(s)
18 JLUR, 08 JKUR, 15 Ford Transit 350, 04 WJ 4.7, 17 Renegade, 99 Merc E430 S
Vehicle Showcase
2
The recall is because the clutch can slip and overheat and either blow apart or catch fire. So the solution is a heat shield on the clutch line. Personally I was thinking a better clutch would be in order but clearly I'm an idiot... lol.
As I understand it, the problem's root cause is due to air bubbles not properly bled from the fluid in the slave cylinder, not by a bad clutch. The clutch going bad is a symptom. The clutch is fine if it was properly bled. Other parts in the recall are to prevent a line from getting cut and leaking fluid catching fire in a catastrophic failure. With air bubbles, the clutch doesn't fully disengage under certain conditions, causing friction that generates extreme heat, wearing out the clutch and compromising in some way the metal in the friction plate which in the extreme, causes it to break apart and blow out of the bell housing and possibly cut the hydraulic line, causing a fire.

Again, that is how it was explained to me. Could be wrong or partially wrong.
 

Kluk Ztopolovky

Well-Known Member
First Name
Kluk
Joined
Jul 12, 2019
Messages
951
Reaction score
865
Location
Toronto
Vehicle(s)
Wrangler JL Sport 2dr Sting Gray manual
The recall is because the clutch can slip and overheat and either blow apart or catch fire. So the solution is a heat shield on the clutch line. Personally I was thinking a better clutch would be in order but clearly I'm an idiot... lol.
yes, that's what Fiat says but I don't necessarily buy that
 

Kluk Ztopolovky

Well-Known Member
First Name
Kluk
Joined
Jul 12, 2019
Messages
951
Reaction score
865
Location
Toronto
Vehicle(s)
Wrangler JL Sport 2dr Sting Gray manual
As I understand it, the problem's root cause is due to air bubbles not properly bled from the fluid in the slave cylinder, not by a bad clutch. The clutch going bad is a symptom. The clutch is fine if it was properly bled. Other parts in the recall are to prevent a line from getting cut and leaking fluid catching fire in a catastrophic failure. With air bubbles, the clutch doesn't fully disengage under certain conditions, causing friction that generates extreme heat, wearing out the clutch and compromising in some way the metal in the friction plate which in the extreme, causes it to break apart and blow out of the bell housing and possibly cut the hydraulic line, causing a fire.

Again, that is how it was explained to me. Could be wrong or partially wrong.
Interesting , this "bubbles theory" is a new one to me and thank you for posting it . At the end of the day my clutch still smells and the recall inspection was performed by the local Fiat dealer . I kind of resigned and I will see what happens. If the clutch fails I hope it won't be during my next road trip and that's all.There is much bigger fish to fry these crazy days.
 

ChattVol

Well-Known Member
Joined
Jun 29, 2018
Messages
2,446
Reaction score
2,626
Location
Tennessee
Vehicle(s)
JLU 4 door
LOL, I was getting ready to call you to talk about this.
Turned off hill assist today. Starting from a stop felt a tiny bit smoother...but it wasnt a big difference. I like the hill assist when wheelin steep stuff...so I'll prob leave it on.
 

OceanBlues

Well-Known Member
First Name
Steven
Joined
Jul 17, 2018
Messages
98
Reaction score
148
Location
North Carolina
Vehicle(s)
2018 JLU Sport
About 50k miles, no issues. Just got a new clutch from the recall and still buttery smooth.
 

sf5211

Well-Known Member
First Name
Steve
Joined
Jun 14, 2019
Messages
1,472
Reaction score
1,975
Location
Bronx N.Y.
Vehicle(s)
New 2019 JL
Occupation
Plumber
Vehicle Showcase
1
It's under vehicle settings, and then something like Safety and Assistance. Going off memory here, so might have the names slightly off.
Thank you Jimmy
 
Advertisement

Next Venture Motorsports
 
Advertisement
Top