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  #13  
Old 01-17-2015, 09:17 PM
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Re: Clunk/thunk on 6-5 coasting downshift.

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Originally Posted by Vtac2 View Post
mine does this too, but I hardly notice it, and not concerned about it.doesn't do it very often though...have a 2015 with 1200miles on it.Love my beast!!!

I could live with that too, but mine does it almost every single time. I actually celebrate when it fires off a smooth 6-5 shift. My wife won't stop pointing it out too, which doesn't help with my frustration. I'm going to start leaving the keys in it with the windows down in a shady part of town. It's such a shame because it's a wonderful vehicle otherwise. That 6.4l Hemi will make you forgive a lot of sins, but the 6-5 shift is dragging me down.


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  #14  
Old 01-17-2015, 11:50 PM
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Re: Clunk/thunk on 6-5 coasting downshift.

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Originally Posted by Jsboening View Post
I could live with that too, but mine does it almost every single time. I actually celebrate when it fires off a smooth 6-5 shift. My wife won't stop pointing it out too, which doesn't help with my frustration. I'm going to start leaving the keys in it with the windows down in a shady part of town. It's such a shame because it's a wonderful vehicle otherwise. That 6.4l Hemi will make you forgive a lot of sins, but the 6-5 shift is dragging me down.


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I hear ya….it would piss me off too if it was that bad and frequent….mine hardly does it…really hope the issue gets resolved or greatly improved for ya….cause I am really loving my ride….what an improvement over the wk1 srt8 IMO.

I bought the extended warranty with mine….and will probably change out within the year of expiry again.
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Old 01-18-2015, 04:46 AM
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Re: Clunk/thunk on 6-5 coasting downshift.

I've got the same thing, but it's more like the 5-4 shift for me.

I'm taking it in to Jeep in a few week so they can have a closer look. The attitude so far hasn't been encouraging.

I've also got a rough idle on cold start and my U-Connect crashes if I plug my iPhone6 in via the USB cable. So far they've told me there's nothing they can do about any of them. I LOVE the car, but unfortunately Jeep service isn't always the best. It's an unfortunate tarnish on such a great vehicle.
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  #16  
Old 01-18-2015, 06:11 AM
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Re: Clunk/thunk on 6-5 coasting downshift.

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Originally Posted by bmackin View Post
I've got the same thing, but it's more like the 5-4 shift for me.

I'm taking it in to Jeep in a few week so they can have a closer look. The attitude so far hasn't been encouraging.

I've also got a rough idle on cold start and my U-Connect crashes if I plug my iPhone6 in via the USB cable. So far they've told me there's nothing they can do about any of them. I LOVE the car, but unfortunately Jeep service isn't always the best. It's an unfortunate tarnish on such a great vehicle.

I get the occasional rough idle at cold start too. I'm letting that one go. I can only imagine my device departments reply to that complaint. I'm thinking about getting the service manager a rubber stamp that says "They all do that"...I'm not kidding. If they all do it why doesn't Jeep fix it. That answer just pisses me off.


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Old 01-18-2015, 06:38 AM
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Re: Clunk/thunk on 6-5 coasting downshift.

I know it's a different tranny for us 12-13s but I had a similar issue with the 2nd to 3rd shift or the"bog" down issue. Might have took them 3 years to fix but ended up going to service for a transmission module update and now there's no more rough shifts or the bog down issue. Hopefully it's just a computer adjustment down the road for you guys and nothing serious.


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Old 01-18-2015, 07:52 AM
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Re: Clunk/thunk on 6-5 coasting downshift.

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Originally Posted by Stealthv8 View Post
Hopefully it's just a computer adjustment down the road for you guys and nothing serious.


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I'd be ecstatic if that was the case. I really don't want my new SRT torn apart already.


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Old 01-21-2015, 08:58 PM
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Re: Clunk/thunk on 6-5 coasting downshift.

Update.

My service department is now going to push Chrysler for a new transmission and torque converter because of the awful drone I've been having the past couple hundred miles. The district manager has to sign off on it though, so it's not a done deal yet. I should know more tomorrow.

I've been having an awful drone the past couple hundred miles when the torque converter locks up at highway speeds. I brought it up with the tech today as I thought the issues may be related. Glad I did. The tech has 20 years of transmission repair experience so I'm taking his word for it. Fingers crossed will update when I hear more.


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Old 01-21-2015, 09:12 PM
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Clunk/thunk on 6-5 coasting downshift.

Is the drone related to the 6-5 clunk or separate issue? Mine does some funky things also when coasting and then hitting the accelerator - almost feels like it's in a gear way too high for the speed, slight clunk and then Acceleration. Ours were built around the same time. Wonder if there's an issue with that batch of trannys?


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  #21  
Old 01-21-2015, 10:03 PM
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Re: Clunk/thunk on 6-5 coasting downshift.

I believe the two are separate, but perhaps the tranny damaged the torque converter. I really don't know. It started with the clunk on 6-5 and has progressively gotten worse.

The drone didn't start for me until a couple hundred miles ago(at about 1300mi on it) it had 1551 on it today when I dropped it off at the dealership. The drone was getting louder and happening at higher speeds. I first noticed it around 40 then it would happen from 40-63 mph then last weekend I was taking my niece home and was doing about 75-77 mph on the highway and it started doing it at that speed also. Only when the torque converter locked up at steady speed and load. As soon as I'd press on the gas or the cruise control would it would come out of lockup and smooth out. If I put the trans in sport mode it would not drone. I think because the converter doesn't lock ups? Someone correct me if I'm wrong, but I couldn't feel it lock up in sport mode. Also the trans temp would climb above 200 degrees at a steady 77mph. I'm hearing this is a normal temperature, but it seems high to me considering it was only 23 degrees F. with only my wife, niece, and myself in the vehicle. It also seemed to slam in and out of lock up a lot at steady speeds for no apparent reason. I thought at one point it was the AC compressor kicking on and off, but I turned the climate control off and it continued to do it. I also tried Eco mode at 75-77 mph and the drone/vibration was UNBEARABLE. not just slightly annoying, but nauseating. My wife gave me the look of death so I turned it off. She just shook her head. She is hating this Jeep at this point. I've had performance cars with aftermarket exhaust before so I know what drone is. This was unholy. If you want to get a terrorist to talk take him for a ride in this jeep. Water boarding has nothing on it.

Should know more tomorrow. I'll update.


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  #22  
Old 01-21-2015, 10:32 PM
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Re: Clunk/thunk on 6-5 coasting downshift.

Isn't the drone you're talking about in D but not S mode at steady speed the MDS system or whatever kicking in when it drops cylinders for fuel economy? Mine does the exact same thing, and it doesn't do it in S because I understand S mode disables the MDS system, or at least greatly reduces when it comes on.

I understand MDS is completely disabled if you turn the Selec Trak dial away from Auto (like into Sport), try doing that and see if the drone ever appears?

Unrelated, but regarding the A/C compressor, it's pretty gnarly at idle with foot on the brake when it kicks in, the truck will almost jump a tiny bit when it idles up...definitely noticeable.

My 6-5 clunk remains intermittent in volume and harshness after 1300 miles (admittedly many were highway as we had to take a road trip starting with about 300 miles on the truck). I've been driving it a lot harder the last couple days and I can almost convince myself it's improving, but overall I agree the transmission in this truck is pretty jumpy.

Remaining quite interested in this thread though as we all have similar build times with this issue.
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Old 01-21-2015, 10:51 PM
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Re: Clunk/thunk on 6-5 coasting downshift.

The drone is happening in D without sport shifting selected. Gets even worse if I put it in Eco mode. If I select sport shifting the drone goes away and the Eco mode is disabled.

At this point I'm wondering if the trans damaged the torque converter or if the converter damaged the transmission. I may never know. My troubles started with the 6-5 clunk at slowing downshifts and has escalated to the clunk with droning now. I don't know enough about transmissions to give an honest answer about what may have happened. I'm just being honest about my SRT's symptoms so that others may match them up to theirs and have an easier time with their fight at the dealer.


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Old 01-22-2015, 12:51 AM
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Re: Clunk/thunk on 6-5 coasting downshift.

Well having not sat in your car I can't speak to the specific volume of the droning issue you're experiencing, but I know I have a distinctly notable exhaust note change in cruise which I attribute to the activation of the MDS...in fact this was so noted by Chrysler that the 2015 models actually have the noise cancelling system with the microphones in the cab just to address the relative unpleasantness of the MDS "drone" if you will. Having not ridden in a 2014 without the noise canceling system, I can't say as to whether the drone is quieter in the 2015, but I do know that A) I definitely notice the change from MDS active to MDS off and B) it's not terribly loud or obnoxious, just noticeably different. Only does it in D to any extent, worse in Eco, and doesn't do it at all in Sport or Track mode.

Is there a reason you specifically believe the drone you're experiencing is directly related to the torque converter and not the MDS system?
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