Is this normal Rev Hang??

[Foxjeeps]

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!

appreciate the input! Mine has 23k on it and I do mostly city driving 2-3k rpm bc 1-2k is lifeless and I don’t wanna burn to much gas all the time. If I pull down the revs via the clutch that’s when I smell the clutch bad so it’s giving me a bad feeling.

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[unsavory]

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

I had 4.88s on my manual with 35 inch tires and still couldn't stand it. I live in an area that is highly congested, and everyone is always in a rush. With the 3.6's lack of low end torque, the rev hang just want a good combo for getting the f outta the way.

 

[m3reno]

When I got my 2018 JL manual the rev hang was awful. After they did the clutch software update it was way better. Now my 2022 manual has 0 rev hang! I'm assuming the over heating clutch issue that has been plaguing the manual could be attributed to the rev hang, as many people are not use to driving a manual in that manner and have had issues trying to feather the clutch. FCA may have seen this as an issue and may have changed the software.

 

[roaniecowpony]

Guys, this has been going on since the early/mid 70s. Back then, they put this device on the intake manifold under the carburetor (look it up if you don't know what this is). The device was generically called a "gulp valve". Probably other names for it. But the basic function is that it let raw air in the intake manifold, when the throttle was rapidly closed, to prevent specific emissions. It had the effect of super leaning out the a/f mixture, which reduce emissions. These devices or computer programming and throttle by wire systems emulate the old system by closing off fuel and cracking the air valve (thrattle plate). Same effect. Both cause a delayed drop in rpm. You can really feel it in a modern AUTOMATIC TRANS car when you go from full throttle to slamming on the brakes. The engine wants to drive through the brakes. Old (more than 50 years) cars the engine rapidly reduced power/rpm upon lifting the throttle.

 

[Petey]

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

I have manual, and while that electronic throttle does stupid stuff at times it doesn't do it repeatedly like yours theres definitely issue . Maybe it gets stuck at time in a certain position when u go WOT
I driven many brands and the JL doesnt even come close to the rev hang king.That dubious distinction goes to a Toyota Rav 4 I drove a few years back. There is a possible issue with urs

 

[Some Random Guy]

appreciate the input! Mine has 23k on it and I do mostly city driving 2-3k rpm bc 1-2k is lifeless and I don’t wanna burn to much gas all the time. If I pull down the revs via the clutch that’s when I smell the clutch bad so it’s giving me a bad feeling.

I finally cleaned the trail off my seat and drove my rig back to work after lunch. Your rev hang is excessive. Mine falls slow, similar to yours, but it does not hold RPM’s like yours even when I run it out in 2nd gear. I will try something on the way home to see if clutching before fully releasing the accelerator pedal makes it hang more than my “default” shifting style in the Wrangler. It’s possible revs with a low enough backpressure might cause mine to hang more. I’m not smart at this stuff though. My work normally starts at or behind the trans, not in front of it.
Edit: mine only has 2,600 on the odo.

 

[Foxjeeps]

I finally cleaned the trail off my seat and drove my rig back to work after lunch. Your rev hang is excessive. Mine falls slow, similar to yours, but it does not hold RPM’s like yours even when I run it out in 2nd gear. I will try something on the way home to see if clutching before fully releasing the accelerator pedal makes it hang more than my “default” shifting style in the Wrangler. It’s possible revs with a low enough backpressure might cause mine to hang more. I’m not smart at this stuff though. My work normally starts at or behind the trans, not in front of it.
Edit: mine only has 2,600 on the odo.

Also note that’s reving while coasting in neutral position clutch out. But under WOT the rev hang is pretty similar. I scheduled service at the dealer to look at it but they want $180 to look at anything And I’d rather not pay that to be told nothings wrong w it

 

[m3reno]

Also note that’s reving while coasting in neutral position clutch out. But under WOT the rev hang is pretty similar. I scheduled service at the dealer to look at it but they want $180 to look at anything And I’d rather not pay that to be told nothings wrong w it
[/QUOTE Wouldn't that be covered under your 3yr 36,000 mile warranty

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