Is this normal Rev Hang??

[Foxjeeps]

Ok the rev hang is really getting to me on my 2019 JL 2 door 6 speed. This is my 6th manual car. I love driving manual but this is by far the hardest to drive.

I took this video to show off how bad it is. I revved it in neutral while coasting and it hangs at the same rpm for a second then slowly dips. It’s also very hot as I live in Florida so about 90 degrees at least. It roughly does the same rev hang if accelerating past 5k

If I’m WOT past 5k rpm it will hang for almost 3 seconds until ready for the next gear. This makes accelerating with any urgency terrible and really confused people in traffic behind me. I’m also really nervous how long the clutch will last as it wants to slip into each gear if I don’t wait long enough.

should I take it to the dealer? Or trade it in because manual jeeps are just like this

please any help appreciated I posted the short demo video here

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[unsavory]

Yes, it's normal. And is the reason I ended up selling my manual for an auto:

https://www.jlwranglerforums.com/forum/threads/auto-or-stick.96108/page-3#post-1991735

Also, search for "rev hang" on this forum and you'll find lots of other complaints about this same issue.

 

[Stl-Rubicon]

I was absolutely set on getting a manual until I drove one. The rev hang is ridiculous. I hope you can find a solution. I ended up with an auto.

 

[Jim1964]

That’s precisely why I decided not to buy a manual after a test drive.

This is all done because satisfying EPA mandates is more important than your safety or driving experience. As if a transitory imbalance in AFR were significant in the big picture anyway.

 

[OldGuyNewJeep]

Shift earlier and there’s no hang. Gearing may be a factor, too. I have a Rubicon (4.10) and have no need or desire to shift at high RPM, nor to shift fast like in a sports car.

I’m absolutely not bothered by rev hang, but you should also know it’s not a Jeep thing. Car manufacturers were forced to do this to improve emissions. There are ECU tuners that can reduce the effect.

I love my manual.

 

[6th Floor Mule]

Shift earlier and there’s no hang. Gearing may be a factor, too. I have a Rubicon (4.10) and have no need or desire to shift at high RPM, nor to shift fast like in a sports car.

I’m absolutely not bothered by rev hang, but you should also know it’s not a Jeep thing. Car manufacturers were forced to do this to improve emissions. There are ECU tuners that can reduce the effect.

I love my manual.

Same here. I stopped being in a hurry the day I bought my Jeep. No need to try to force it to do something it doesn’t like. However, I do realize everyone’s driving styles and driving situations are different, and rev hang could be very annoying, especially if you’re trying to avoid getting run over in traffic. The 3.6 power band doesn’t help either

 

[Foxjeeps]

I guess I was so spoiled driving a 99 miata in college. I just don’t understand because modern sports cars are subject to the same issues but their ecus are programmed at 80% throttle or more to not rev hang as much like in the new BRZs.

I’m fine with some rev hang and mostly live in the city so no need to accelerate that fast but felt like I was going to either cause an accident merging onto the freeway or burn up my clutch.. I smell that thing ALOT when I’m driving which I’ve never experienced in any manual before.

Now I double clutch all my shifts just to give myself something to do while waiting for the rev hang.

i think the problem is the recall jeep did on the clutches messed with the ecu and made the rev hang so bad that and the kicker is the JL manual reviews on youtube are not explaining how bad it is to really own these long term.I watched so many reviews if only I had known I’d have an auto.

i think regearing could help despite how dead the low end is on the 3.6

 

[Foxjeeps]

Same here. I stopped being in a hurry the day I bought my Jeep. No need to try to force it to do something it doesn’t like. However, I do realize everyone’s driving styles and driving situations are different, and rev hang could be very annoying, especially if you’re trying to avoid getting run over in traffic. The 3.6 power band doesn’t help either

If I wanted a slow jeep I’d get one with the straight 6 and that’s not even to knock the 4.0l

 

[OldGuyNewJeep]

I smell that thing ALOT when I’m driving which I’ve never experienced in any manual before.

That is NOT normal.

I’m at 4yrs and 50,000 miles, and the only time I’ve ever smelled clutch was while teaching my kids how to do hill starts with the nanny thing turned off.

I’d have it looked at, if I were you. I’m sure you’re aware that a very small number of manuals have a defect that causes the clutch to slip, get hot, and ultimately fracture the pressure plate.

Even if I drive like the cops are chasing me my clutch doesn’t slip and there no smell. At worst, I might cause the Jeep to jerk a bit while shifting if I wind it out to 5-6k rpm.

You might try the slip test on your own for peace of mind. I’m attaching it. (Engine will immediately stall during a successful test.)

 

[Foxjeeps]

That is NOT normal.

I’m at 4yrs and 50,000 miles, and the only time I’ve ever smelled clutch was while teaching my kids how to do hill starts with the nanny thing turned off.

I’d have it looked at, if I were you. I’m sure you’re aware that a very small number of manuals have a defect that causes the clutch to slip, get hot, and ultimately fracture the pressure plate.

Even if I drive like the cops are chasing me my clutch doesn’t slip and there no smell. At worst, I might cause the Jeep to jerk a bit while shifting if I wind it out to 5-6k rpm.

You might try the slip test on your own for peace of mind. I’m attaching it. (Engine will immediately stall during a successful test.)

I have dumped the clutch on accident while I was parked while I didn’t realize the jeep was in 1st gear and it stalled right away. I don’t think it’s slipping. But I think I should schedule a checkup at the dealership. Especially if you think it’s not normal. It seems like an ECU issue

 

[zrickety]

I have dumped the clutch on accident while I was parked while I didn’t realize the jeep was in 1st gear and it stalled right away. I don’t think it’s slipping. But I think I should schedule a checkup at the dealership. Especially if you think it’s not normal. It seems like an ECU issue

I think hot weather exacerbates the issue. I started a thread about it recently. No real answers for you, but I think it's common. Partly to blame is the flywheel at 20 lbs, and the monstrous clutch. If you see pictures, you'll know what I'm talking about. As someone said, it's also an emissions thing. Rev hang burns off excess fuel for better emissions. I also suspect it's worse when moving, perhaps a half-assed rev match feature. I've noticed it doesn't really hang when sitting still.

 

[Foxjeeps]

I think hot weather exacerbates the issue. I started a thread about it recently. No real answers for you, but I think it's common. Partly to blame is the flywheel at 20 lbs, and the monstrous clutch. If you see pictures, you'll know what I'm talking about. As someone said, it's also an emissions thing. Rev hang burns off excess fuel for better emissions. I also suspect it's worse when moving, perhaps a half-assed rev match feature. I've noticed it doesn't really hang when sitting still.

I’m not upset if the clutch is on the heavy side because that helps with off-roading but This rev hang honestly seems like it burns more fuel having to fire so long at a higher RPM as it would without the hang.


3 seconds at 7-4k rpm rather than normal rev hang like in a Ford Focus 1 second at7-4rpm I wish I could talk to the engineers and be like what’s good because it doesn’t make sense.

thank you all for the responses it appreciate the input so much.

 

[Foxjeeps]

To put this into perspective the rev hang is so bad I test drove a 2000 Cherokee XJ the other week

 

[InVinoVeritasty]

I guess I was so spoiled driving a 99 miata in college.

Yep. I was spoiled driving an RX-7 in college. Winding up a Wankle was a treat. The rev hang is real, but I've learned to avoid the annoyance by shifting earlier. When the alternative is an auto, I'll accept a little nonsense.

 

[Some Random Guy]

Mine only hangs in 1st when I don't start engaging the syncros for 2nd, so between short stop-signs.

If it were brand new (or for anyone who stumbles on this), the rev hang is REALLY exaggerated for break-in period. I think mine both took over 1k miles to stop that.

So I believe something is up, or our driving styles are handled differently by the ECU. I normally don't exceed 3k RPM, but I do occasionally run out the gears and don't recall having that issue. Maybe I'm re-engaging gears too quick and am pulling it back down though.

As for the BRZ, it's geared down so much they have no choice but to cut down rev-hang. Mine would go into 6th around 30 mph when taking it easy, so I'd skip gears a lot. I'm not sure if the new ones are also that geared down. Fun cars though!

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