Grinding/vibration/rumble Noise at ~30mph

280461 Views 623 Replies 147 Participants Last post by puddlesplasher, 22 d ago

FormerTexan

Discussion Starter · Sep 9, 2015 (Edited by Moderator)

Band new Trailhawk Renegade with ~ 550 miles. When driving at a steady throttle input at about 30 mph a grinding noise starts and then it appears to go away as you speed up, you can actually feel it, like very faint rumble strips. The noise remains when I put the transmission in neutral and let the car coast. Sometimes it will stick around and give a grind down sound as you stop.

This was posted in another section and I'm thinking it's the same issue;

http://www.jeeprenegadeforum.com/fo...enegade-already-having-issues.html#post268426

The noise does seems to go away when switched into 4WD Lock. I haven't tried, but I will try next time I'm out slipping the car into manual from automatic and see what that does.

Any ideas? I'm thinking it is the transfer case.. Normal or should we take it into the shop?

Thanks!!!

541 - 560 of 624 Posts

RoninCrowley

· #541 · Aug 6, 2019 (Edited)

raz-0 said:
I'd have to see what you are talking about, but I don't think it's broken, just the 9 speed and the firmware fixes to avoid certain problems. For fuel economy, it will try ot get to 5th as soon as possible. Because the 4-5 shift is one of the ones with a dog clutch, it takes longer. Based on owner complaints some things were changed about the firmware's shifting strategy. A couple of things that it definitely does differently now is if it detects deceleration, it avoids a downshift for longer, especially the longer shifts that involve a dog clutch, so that you are at least in a gear if you get back on the throttle. It'll also hold gears longer before upshift under certain conditions compared to early revisions.

In general, it has always been willing to get into the area of lugging the engine to hit the right numbers for fuel efficiency. I suspect owners would be happier if they just bumped up the target cruising rpms a bit and avoid getting into that near lugging zone. But I suspect that would worsen their problems with the EPA.

Never said anything was broken. When I get to a speed change of say 55-65 to 35-40 sometimes it hangs in 5th and i get this rumble/growl and slight vibration through the pedals when I start hitting the gas again. I pull the shifter to Manual and drop the gear to 4th and problem solved. 30-35 is too low of a speed for 5th to be engaged and get slow gears or some mismatch I think.

I need to pay attention to the RPM i know the needle was below 1500 when this happens.

Sent from my iPhone using Tapatalk

raz-0

· #542 · Aug 6, 2019

RoninCrowley said:
Never said anything was broken. When I get to a speed change of say 55-65 to 35-40 sometimes it hangs in 5th and i get this rumble/growl and slight vibration through the pedals when I start hitting the gas again. I pull the shifter to Manual and drop the gear to 4th and problem solved. 30-35 is too low of a speed for 5th to be engaged and get slow gears or some mismatch I think.

I need to pay attention to the RPM i know the needle was below 1500 when this happens.

Sent from my iPhone using Tapatalk

yeah, it targets ~1250rpm. This tangent should probably be taken to one of the transmission threads on 9 speed shifting.

Kanyok

· #543 · Aug 16, 2019

Brought my 2017 Renegade Latitude 1.4T Manual in with 9,000 to have a front suspension rattle checked under warranty (they replaced both front stabilizer links under warranty, all good now, they say its common, also with the Compass) and since it was in I asked them to check the drivetrain rumble. Picked up car, they said (exactly as on paperwork) "No droan heard, only slight tire noise". Now, I didn't expect them to be able to fix it, though was hoping for a firmware flash (they said none was available) but to say they was no noise other than tire noise? The rumble is many times louder than any tire noise, and it happens every single time you hit that target speed. So I offered to take him out in it and demonstrate the noise, because its impossible not to hear it. At that time he said (which isn't on the paperwork of course) "let me rephrase my response" which was "we didn't hear anything we don't expect to hear, other than tire noise", and thus the noise is "normal". Its one thing to say you hear it and claim its normal, its another to try and deny there is a noise. But conveniently they refuse to change what the paperwork says, which says there is no noise. And then I get in my car, which had all accessories including the fan turned off when I dropped it off. The fan was on full blast, which you can't hear anything when its on full blast. Makes me wonder that if the service tech does that to keep an honest face to say he didn't hear anything when he writes that on the paperwork. After this amount of time I doubt a fix will be coming. But I will continue to monitor posts in case one does show up.

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Bri Croft

· #544 · Oct 11, 2019

Is there a fix for this yet. Has anybody experienced this high pitch drone/ slight vibration when the rear wheel disconnet activates changing to a lower pitch drone and heavier vibration after a few seconds. Also has anybody had just the rear wheel disconnet servo/motor replaced ?

Unclechuchu

· #545 · Jan 2, 2020

I have the vibration/noise at around 30mph, just as described in this post. My car is a 2017 500x 1,4l 170hp, 9AT. It disappears when gearbox is set to manual, or vehicle in sport mode. Dealer has tried software update, which removed the noise for a couple of days (could be random), but the noise is back.

Does anyone know exactly where the noise is coming from? I have tried to read all the posts in this thread, but I couldn't find the answer. Is it within the rear diff, or is it resonance from the centre/rear drivetrain?

IDoMy0wnRacing

· #546 · Jan 2, 2020

W E L C O M E ! ! ! to the forum.

It is hard to diagnose without hearing it for myself. But, if it is coming from the rear of the vehicle, intermittently, it could be the rear differential input bearing or the 4WD actuator. best guess

raz-0

· #547 · Jan 3, 2020

The operating theory based on everything to date is that the noise has to do with the wet clutch in the rear drive unit not engaging/disengaging properly.

The one mass distributed software "fix" for it didn't work, but seemed to pulse/feather the operation in the hopes it would work better.

The noise goes away when you take off traction control or put on 4wd, because both change how it locks up. Similarly, it goes away in the cold, once again because if it is cold enough, the algorithm is different for how the AWD system locks up.

The one person who claims to have had FCA fix it had engineers on site fine tuning something. A while after that there was supposed to be a firmware update in the pipeline to fix it, but nothing came of it.

The theory there is that either 1) The problem arises from sourcing a part that variable in tolerances or behavior enough that you can't make a one size fits all fix, or 2) it became a non-thing shortly after FCA started getting investigated by the EPA for emissions fraud, and that it can't be fixed without impacting emissions.

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DanW

· #548 · Jan 4, 2020

I had a growling noise at about 30mph (2.4/auto/4x4) when we bought it. There was right front suspension damage, so in fixing that, it went away. It turned out on ours to be a right front wheel bearing. Our issue may be completely different than what others are hearing, though.

Reactions: 1

dgr401

· #549 · Jan 4, 2020

The noise most are complaining about is coming from the rear. I have the noise sometimes around 30 mph but it is not consistent. I guess after all the miles I've driven the Renegade it is not that noticeable to me anymore.

Reactions: 1

DanW

· #550 · Jan 4, 2020

dgr401 said:
The noise most are complaining about is coming from the rear. I have the noise sometimes around 30 mph but it is not consistent. I guess after all the miles I've driven the Renegade it is not that noticeable to me anymore.

I've not noticed anything unusual, and I've been listening and feeling carefully since we dealt with the right front repairs.

Reactions: 1

dgr401

· #551 · Jan 4, 2020

DanW said:
I've not noticed anything unusual, and I've been listening and feeling carefully since we dealt with the right front repairs.

That is great that you are not hearing/feeling the 30 mph grind/vibration/rumble noise. Even though this has been discussed for about as long as the Renegade has been around I can't recall anyone breaking down with it, everyone seems to just hear/feel it. A Renegade quirk I guess.

Reactions: 2

Zorad

· #552 · Jan 20, 2020

I've put 175,000 miles on my 2015 1.4 manual tranny. The dealer claims the noise is normal and would never do anything about it. I turn off the traction control a lot of the time to eliminate it but the noise hasn't caused any issues that required repairs so far.

Reactions: 2

IDoMy0wnRacing

· #553 · Jan 20, 2020

Zorad said:
I've put 175,000 miles on my 2015 1.4 manual tranny. The dealer claims the noise is normal and would never do anything about it. I turn off the traction control a lot of the time to eliminate it but the noise hasn't caused any issues that required repairs so far.

It seems to me that if you have a noise, and turning off the Traction Control makes the noise go away, you have a problem with the Traction Control.

How are the brakes? Do you have to replace the brakes often?

I have to admit, 175,000 miles in 4 years, you are/have gotten your money's worth.

... did the vibration in the steering ever go away?

Unclechuchu

· #554 · Feb 11, 2020

Thanks for the welcome, and all the answers.

It's interesting that the noise is present at various engine/gearbox setups, so it has nothing to do with this. The most evident thing to try is an oil change on the rear diff. Has anyone tried another viscosity or additive? Original spec is SAE 75W-90 (API GL-5).

Kewrock

· #555 · Feb 26, 2020

FormerTexan said:
Band new Trailhawk Renegade with ~ 550 miles. When driving at a steady throttle input at about 30 mph a grinding noise starts and then it appears to go away as you speed up, you can actually feel it, like very faint rumble strips. The noise remains when I put the transmission in neutral and let the car coast. Sometimes it will stick around and give a grind down sound as you stop.

This was posted in another section and I'm thinking it's the same issue;

5 Day old Jeep renegade already having lock issues

The noise does seems to go away when switched into 4WD Lock. I haven't tried, but I will try next time I'm out slipping the car into manual from automatic and see what that does.

Any ideas? I'm thinking it is the transfer case.. Normal or should we take it into the shop?

Thanks!!!

FormerTexan said:
Band new Trailhawk Renegade with ~ 550 miles. When driving at a steady throttle input at about 30 mph a grinding noise starts and then it appears to go away as you speed up, you can actually feel it, like very faint rumble strips. The noise remains when I put the transmission in neutral and let the car coast. Sometimes it will stick around and give a grind down sound as you stop.

This was posted in another section and I'm thinking it's the same issue;

5 Day old Jeep renegade already having lock issues

The noise does seems to go away when switched into 4WD Lock. I haven't tried, but I will try next time I'm out slipping the car into manual from automatic and see what that does.

Any ideas? I'm thinking it is the transfer case.. Normal or should we take it into the shop?

Thanks!!!

Apparently, they never fixed this problem. My 2017 TH bought in August of '17 has it since new. It never got worse, and I have more serious problems unresolved. It goes off-lease in November, so I don't even care anymore. Asian lease for me next time. It's almost a very faint buzzing through the whole truck. I do not feel it in the steering or pedals. It's more in the seat.

NewBernRenegade

· #556 · Feb 28, 2020

NewBernRenegade said:
Just an update on my 2nd shop visit. I typed up a description of the Renegade Rumble - how to replicate it and stop it and gave it to my service agent when I arrived. They worked on the car for the morning as I waited at the dealership. After 3 hours or so they tried the same bait & switch hustle they did the last time I was there - my original service agent was ‘at lunch’ so the reinforcement lady tried to settle me up by telling me it was my tires making the sound. I didn’t even stand up and asked her (in front of other waiting customers) if my service agent had written any of the document I brought on the paper for the technicians - she said no (and started sweating lol). They ‘worked’ on the car for a few more hours, ran 2 powertrain updates, and finally admitted (on paper) that the sound was still there and they could only wait until Jeep issues a fix.

Considering Jeep hasn’t fixed this design flaw on all previous models, I wouldn’t hold your breath. I immediately started browsing the Toyota lot.

Customer care has reached out to me but I’m not expecting much - probably just some poor customer service agent that is gonna call and act surprised and concerned about the issue.

Final update on the Renegade Rumble.
We traded our 2017 Renegade Trailhawk in for a Subaru. The rumble never stopped and we were at 59,000 miles, just about to lose the transmission warranty. Great vehicle, wrong/half-baked transmission, poor service from Jeep and local dealers regarding the issue. First and last Jeep for us.

Tito Sam

· #557 · Mar 2, 2020

Quote
Band new Trailhawk Renegade with ~ 550 miles. When driving at a steady throttle input at about 30 mph a grinding noise starts and then it appears to go away as you speed up, you can actually feel it, like very faint rumble strips. The noise remains when I put the transmission in neutral and let the car coast. Sometimes it will stick around and give a grind down sound as you stop. end quote
mine started after remapping at the dealer at the 30 -39 MPH I get the rumble then when it starts I move the shifter to the manual shift of the auto trans and it goes away not sure if it is a factory fault or something else but that's how I stop the noise...

dgr401

· #558 · May 22, 2020

I have been riding as a passenger this week and guess what, the rumble is more noticeable in the passenger seat than it is in the driver seat in my Renegade. I have never really ridden in the passenger seat much at all and I am a little surprised how much I can hear it and actually feel it. I don't even notice it when I am driving. I can't wait to get behind the wheel, not sure when that will be though. I miss driving my Renegade.

Reactions: 1

93000Renegade

· #559 · Jun 2, 2020

FormerTexan said:
Band new Trailhawk Renegade with ~ 550 miles. When driving at a steady throttle input at about 30 mph a grinding noise starts and then it appears to go away as you speed up, you can actually feel it, like very faint rumble strips. The noise remains when I put the transmission in neutral and let the car coast. Sometimes it will stick around and give a grind down sound as you stop.

This was posted in another section and I'm thinking it's the same issue;

5 Day old Jeep renegade already having lock issues

The noise does seems to go away when switched into 4WD Lock. I haven't tried, but I will try next time I'm out slipping the car into manual from automatic and see what that does.

Any ideas? I'm thinking it is the transfer case.. Normal or should we take it into the shop?

Thanks!!!

My 2017 Rengade has 93,000 miles on it. The noise you speak of seems normal at this many miles? I had a lurk/jerk in the transmission at speed of 30mph - 35mph. A software issue was the suposedly fix, but did not fix. Jeep dealer merely shrugs their shoulders and can't fix it? It has done this since about 30,000 miles.

IDoMy0wnRacing

· #560 · Jun 5, 2020

93000Renegade said:
My 2017 Rengade has 93,000 miles on it. The noise you speak of seems normal at this many miles? I had a lurk/jerk in the transmission at speed of 30mph - 35mph. A software issue was the suposedly fix, but did not fix. Jeep dealer merely shrugs their shoulders and can't fix it? It has done this since about 30,000 miles.

No, grinding noise in NOT normal at any miles.
The lurk/jerk in the transmission at speed of 30mph - 35mph is probably the Engine/Transmission mounts (there are 3 of them).

It sounds like your dealer doesn't have the skill set or desire required to repair your issue.
Send @JeepCares a PM, They have been helpful.

Reactions: 2

541 - 560 of 624 Posts