Manual Transmission Club

[AKDrifter]

Lot of mis-information here.
the first recall was due to early run of fittings to the brake master cylinder would be mounted improperly on some units off the assembly line and cause air to enter the system, which would make the clutch hang up, in turn after extended period of time, cause the clutch to over heat and spontaneous heat source with special effects is created.

That's all good info, never heard any of that as an explanation, just know what they said the "fix" was. What's your source? Would definitely be interested in reading up on it. I've never seen that as an explanation, makes way more sense than what we were told at the time. That little tidbit would have made people much more confident in the repair, because it is a fact they were sleeving lines around the transmission as the repair, and we were unhappy with that as a solution. You can go back into the original recall thread and see my experience from my 1st Jeep Wave oil change and what I was told 3 years ago. I will say that it still hasn't blown up, will never take it in for the recalls at this point, will just do a new clutch when it's time. But I'd be super interested in reading about it if there's something that explains the original problem.

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[IPRoutes]

The second recall reduced torque at low RPMs on manual JL/JTs to reduce clutch slip. Now this one make me mad, they realized the clutch was sub par, so instead of making a better one, they just made the vehicle baby it to prevent slippage. And we continue to use the exact same PN clutch with no revision.

I thought the torque reduction happens only under the condition when it senses overheating.

 

[DanW]

I thought the torque reduction happens only under the condition when it senses overheating.

You are correct. ONLY when slippage is detected. It doesn't detect heat, but rather slippage. Then an algorythm determines the temperature based on the amount of slippage. It is surprisingly accurate. Otherwise, there is no torque reduction.

 

[bd100]

Once tried backing a trailer up a driveway and got a bit of the smoky clutch smell. But no slip warning. Switched to low range for a moment and all was well.

In general I'm happy with this clutch so far, once it was broken in. The gearing is a problem though. While towing up hill in the mountains on some grades I could wind out first and second then could not accelerate any more in third, so was stuck at 45mph in second. And reverse is of course way too long. Too bad it has two overdrives instead of a more useful gear spacing. Thanks, EPA!

 

[IanNubbit]

I thought the torque reduction happens only under the condition when it senses overheating.

Yes thats what they said. But, being a tech, I've pulled a jeep in, and then out after the update, it’s definitely not just during slippage.

 

[IanNubbit]

That's all good info, never heard any of that as an explanation, just know what they said the "fix" was. What's your source? Would definitely be interested in reading up on it. I've never seen that as an explanation, makes way more sense than what we were told at the time. That little tidbit would have made people much more confident in the repair, because it is a fact they were sleeving lines around the transmission as the repair, and we were unhappy with that as a solution. You can go back into the original recall thread and see my experience from my 1st Jeep Wave oil change and what I was told 3 years ago. I will say that it still hasn't blown up, will never take it in for the recalls at this point, will just do a new clutch when it's time. But I'd be super interested in reading about it if there's something that explains the original problem.

Source is the repair info. Im a tech, also all recall repairs are public view. The sleeve (wire loom essentially) is placed over the hose from the brake master to the clutch master after inspection for clutch fluid seepage.

 

[AKDrifter]

Source is the repair info. Im a tech, also all recall repairs are public view. The sleeve (wire loom essentially) is placed over the hose from the brake master to the clutch master after inspection for clutch fluid seepage.

I figured it might be some insider baseball there. So the sleeve is only there to catch leaking fluid? How interesting. So there really wasn't a repair.

 

[IanNubbit]

I figured it might be some insider baseball there. So the sleeve is only there to catch leaking fluid? How interesting. So there really wasn't a repair.

No there was. The repair was make sure the hose wasn't leaking, replace if it was, ensure the new or original is fully seated, and theb oroperly route the hose if not correct. Finnaly apply the sleeve to prevent damage caused by rubbing againt nearby surfaces

 

[DanW]

Yes thats what they said. But, being a tech, I've pulled a jeep in, and then out after the update, it’s definitely not just during slippage.

Have you put it on a dyno?

 

[AKDrifter]

No there was. The repair was make sure the hose wasn't leaking, replace if it was, ensure the new or original is fully seated, and theb oroperly route the hose if not correct. Finnaly apply the sleeve to prevent damage caused by rubbing againt nearby surfaces

Granted. For the vast majority who didn't have an issue with fluid leaking there wasn't a fix though. They just decided to eventually program for less torque under certain conditions after (I'm just guessing) it wasn't good enough to just make sure the lines weren't leaking. As a tech have you seen any increase in clutch complaints as they're aging now?

 

[IanNubbit]

Granted. For the vast majority who didn't have an issue with fluid leaking there wasn't a fix though. They just decided to eventually program for less torque under certain conditions after (I'm just guessing) it wasn't good enough to just make sure the lines weren't leaking. As a tech have you seen any increase in clutch complaints as they're aging now?

Okay im a little confused why you continue to say there was no fix to the line? If there wasn't a leak, correct routing was verified and the sleeve added. Later models changed the line all together to a thicker soft hose with more common spring clamp to hold in place and they have both been bullet proof since. The recall wasent because the clutch disc was an issue, it was for the, line which then casued clutch failure as a result. So they very much so fixed the issue there.

 

[IanNubbit]

Have you put it on a dyno?

No, most certainly not have put it on a dyno? Simple observation and personal opinion.

 

[AKDrifter]

Okay im a little confused why you continue to say there was no fix to the line? If there wasn't a leak, correct routing was verified and the sleeve added. Later models changed the line all together to a thicker soft hose with more common spring clamp to hold in place and they have both been bullet proof since. The recall wasent because the clutch disc was an issue, it was for the, line which then casued clutch failure as a result. So they very much so fixed the issue there.

I had no idea there was a repair to the line until you said it yesterday. Remember all I've ever seen from Jeep was my recall letter that didn't make a lot of sense because it didn't reference what was really happening. What you're saying makes things much more clear. Like I said, I'd love to read more about it. I'm an aircraft mechanic, a third of that job is finding/reading the right technical manual to reference how you repair anything to cite in the logbook. As with all things you gain clarity as time passes. You hit the nail on the head with this. This is where all of our frustrations lie, this is what the problem really stems down to, and as you say, still isn't really fixed.

they realized the clutch was sub par, so instead of making a better one, they just made the vehicle baby it to prevent slippage. And we continue to use the exact same PN clutch with no revision.

 

[IanNubbit]

I had no idea there was a repair to the line until you said it yesterday. Remember all I've ever seen from Jeep was my recall letter that didn't make a lot of sense because it didn't reference what was really happening. What you're saying makes things much more clear. Like I said, I'd love to read more about it. I'm an aircraft mechanic, a third of that job is finding/reading the right technical manual to reference how you repair anything to cite in the logbook. As with all things you gain clarity as time passes. You hit the nail on the head with this. This is where all of our frustrations lie, this is what the problem really stems down to, and as you say, still isn't really fixed.

The probnlem they described is fixed, and the part is not broken. Buuuuuutttttttttttttttt, the clutch is subpar for the platform and that lies the issue that just isnt being admitted from the top. Broken, no. Need to be fixed, no. Poor choice on design and manufacturing, very.

 

[AKDrifter]

The probnlem they described is fixed, and the part is not broken. Buuuuuutttttttttttttttt, the clutch is subpar for the platform and that lies the issue that just isnt being admitted from the top. Broken, no. Need to be fixed, no. Poor choice on design and manufacturing, very.

Exactly. I am concerned about towing any amount of weight with it. But mine still hasn't exploded through the floor. When this one wears out and I replace it, definitely going aftermarket, and I wouldn't be as hesitant to tow a trailer afterwards. That's why I asked if you'd seen anything increase in problems coming in now that they're getting older. Guys who are turning the wrenches are going to be the guys to give the best honest opinion on a mechanical subject.

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