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Discussion Starter #1
Hey Guys,

Hoping for input from others with the manual transmission on the Scat Pack. I've put 290 miles on my car following break in regulations and have had a horrible experience with it so far. My transmission vibrates badly from 25mph and up downshifting to 2nd gear from 3-6. Vibrations are so bad that you can feel it through the peddles, floor, and seat. It also makes some whining noise going in and then letting the clutch out. My buddies Scat was built two days before mine delivered same week. The dealer replaced his transmission at 500 miles on the car under warranty to see if that would fix the issue. After driving his back to back it still does the exact same thing mine does except half as severe. I'm not sure if this is because it only has 40 miles on the transmission and will progress to still be as bad as mine but either way its completely unacceptable. The vibration basically shakes the whole car. Has anyone else had this issue? Any one know of a fix?

The dealer is in summary is saying that the issue lies with how Tremec built the transmission per Chrysler spec. Judging by the fact that both cars transmissions from the factory exhibit the same issues and then the one that they replaced my buddies with from Tremec also does the same thing. They are saying this could just be the way it is. I understand, for example, that a TR6060 from Chevrolet may have different specs from Dodge but cars that have it which I have either drove or driven such as a ZR1 in no way have any of these issues.

Thanks for the input in advance
 

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Sound like a warranty issue. Though I do not have a manual transmission, I would think the operation should be smooth and easy with little vibration. I suspect the clutch plate, maybe the assembly went bad on that one... Anyway, I would give them the car back until it is fully repaired. IMHO
 

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Are you positive its the trans? My dad had a corvette that ended up getting returned under lemon law because they couldn't fix it. They thought it was the trans, then the maybe a bad fly wheel, then when nothing fixed it they thought it would be a bad crank in the engine causing the vibrations and GM bought the car back. It would only do it during certain RPM, and conditions, I was young and don't remember all the details but it seems like there is more to this than just the trans. Maybe drive shaft is out of balance?
 

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Somethings definitely wrong - I'd suspect there's issues with driveshaft, coupler that may cause that. Or possibly engine mounts or transmission mounts.

I've owned 2 Challengers both with manual trans, and they don't do that.

Between the automatic and manual, they both are smooth and quiet operation at idle, acceleration and cruise.
 

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I've had 3 Tremec 6 speeds in 3 challengers (two 5.7s and one Scat Pack 392) and there was no noticeable vibration with any of them. I would stand firm until it's fixed.
 

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I've had my manual transmission SP for over over a year now with 20k miles and never had that problem. Like someone else said, might not be the transmission at all. Contact Dodge Cares on this forum if you run into a wall at the dealer. They will help.

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Discussion Starter #7
I appreciate all the feedback everyone sharing your experiences with manual. I completely agree with you all that there is nothing normal about this. I called Tremec just now and got some decent information but nothing really. The rep had no hard data showing an abnormal amount of complains or anything to warrant a recall but he did give me an insight into their practices. In summary each TR6060 is different among manufactures and car models. So the TR606 in a base to ZR1 corvette is completely different than the Scat Pack's only similarity is the casing. The manufacturer orders what will be used on the innards of the casing, likely driven by cost, so maybe they went cheap on to save money through this route? They also said each unit is tested and spun before shipment so there shouldn't be an issue that bad and was recommended by them as well not to accept it as the dealer wants me to. He noted that all transmissions are shipped dry and the manufacturer adds fluids during the build which is only a manufacturer branded fluid. He advised I change the fluid to the recommended Mobile 1 ATF Dexron 3. Does anyone have experience with fluid? I figured in the mean time I'll try it while they contact their Chrysler Rep and see what's going on with my transmission. I just find it beyond coincidence now that three separate transmissions are exhibiting the exact same issues and behaviors.
 

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I appreciate all the feedback everyone sharing your experiences with manual. I completely agree with you all that there is nothing normal about this. I called Tremec just now and got some decent information but nothing really. The rep had no hard data showing an abnormal amount of complains or anything to warrant a recall but he did give me an insight into their practices. In summary each TR6060 is different among manufactures and car models. So the TR606 in a base to ZR1 corvette is completely different than the Scat Pack's only similarity is the casing. The manufacturer orders what will be used on the innards of the casing, likely driven by cost, so maybe they went cheap on to save money through this route? They also said each unit is tested and spun before shipment so there shouldn't be an issue that bad and was recommended by them as well not to accept it as the dealer wants me to. He noted that all transmissions are shipped dry and the manufacturer adds fluids during the build which is only a manufacturer branded fluid. He advised I change the fluid to the recommended Mobile 1 ATF Dexron 3. Does anyone have experience with fluid? I figured in the mean time I'll try it while they contact their Chrysler Rep and see what's going on with my transmission. I just find it beyond coincidence now that three separate transmissions are exhibiting the exact same issues and behaviors.
The OEM fill for Chrysler is ATF+4 - a synthetic ATF fluid. GM uses one fluid, and Ford and Chrysler use others they spec.

I doubt fluid will make a difference in your situation. If the level was low that one matter.

Mainly what I've found is different fluids affect the shift effort and quality - the synchros are affected by the lubricant and friction modifiers.

I've used the Driven STF fluid they designed for Tremecs - liked the smoother shift feel vs. the ATF+4.
 

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My manual '17 scat was delivered in Dec and the trans is very smooth. Had to get used to the loose and sloppy throws, but very pleased with transition of gears.


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I have the manual in my Hellcat, it may be a different transmission but smooth as silk. Sounds like you need to keep pushing the dealer to find the problem.
 

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My manual '17 scat was delivered in Dec and the trans is very smooth. Had to get used to the loose and sloppy throws, but very pleased with transition of gears.


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*Cough* Barton *Cough*

A Guy ;)
 

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I wouldn't mess with fluid. With the low miles You have, leave it as delivered. You start changing stuff, it may open the door for questions from the dealer that will divert the attention from where it belongs. If you don't get satisfactory answers from your dealer/service people, get another opinion from another with a known positive reputation. BTW, my 6 speed has none of the symptoms you describe.
 

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Hey Guys,

Hoping for input from others with the manual transmission on the Scat Pack. I've put 290 miles on my car following break in regulations and have had a horrible experience with it so far. My transmission vibrates badly from 25mph and up downshifting to 2nd gear from 3-6. Vibrations are so bad that you can feel it through the peddles, floor, and seat. It also makes some whining noise going in and then letting the clutch out. My buddies Scat was built two days before mine delivered same week. The dealer replaced his transmission at 500 miles on the car under warranty to see if that would fix the issue. After driving his back to back it still does the exact same thing mine does except half as severe. I'm not sure if this is because it only has 40 miles on the transmission and will progress to still be as bad as mine but either way its completely unacceptable. The vibration basically shakes the whole car. Has anyone else had this issue? Any one know of a fix?

The dealer is in summary is saying that the issue lies with how Tremec built the transmission per Chrysler spec. Judging by the fact that both cars transmissions from the factory exhibit the same issues and then the one that they replaced my buddies with from Tremec also does the same thing. They are saying this could just be the way it is. I understand, for example, that a TR6060 from Chevrolet may have different specs from Dodge but cars that have it which I have either drove or driven such as a ZR1 in no way have any of these issues.

Thanks for the input in advance
So far, no issues with my 2016 SRT 393 at 1,800 miles. :smile:
 

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The OEM fill for Chrysler is ATF+4 - a synthetic ATF fluid. GM uses one fluid, and Ford and Chrysler use others they spec.

I doubt fluid will make a difference in your situation. If the level was low that one matter.

Mainly what I've found is different fluids affect the shift effort and quality - the synchros are affected by the lubricant and friction modifiers.

I've used the Driven STF fluid they designed for Tremecs - liked the smoother shift feel vs. the ATF+4.
I'm fairly new to these forums, i was wondering where do you find the synthetic version of ATF+4 and a lot of people refer to normal "break in period" of a new car, is this break in period documented anywhere?

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I'm fairly new to these forums, i was wondering where do you find the synthetic version of ATF+4 and a lot of people refer to normal "break in period" of a new car, is this break in period documented anywhere?

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Break in is documented in your owners manual.

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I'm fairly new to these forums, i was wondering where do you find the synthetic version of ATF+4 and a lot of people refer to normal "break in period" of a new car, is this break in period documented anywhere?

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All ATF+4 is synthetic and you can download your owners manual at dodge.com. If you're talking trans, it should shift smooth from day one, no break in needed for it to get smooth. Car is broken in by 500 miles, also get the SRT owners manual too, it's got a better break in section and other stuff.

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Discussion Starter #17
Doesn't the Hellcat use exact same transmission from the Viper? Our Scat Packs might be different in some ways
 

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Discussion Starter #18
I wouldn't mess with fluid. With the low miles You have, leave it as delivered. You start changing stuff, it may open the door for questions from the dealer that will divert the attention from where it belongs. If you don't get satisfactory answers from your dealer/service people, get another opinion from another with a known positive reputation. BTW, my 6 speed has none of the symptoms you describe.
Yeah this is what most people have been saying. Like I said me and my buddy ordered our same week they built 2 days apart from each other and exact same issues. I drove his with the replaced transmission from Tremec and it does the same thing. All Tremec could recommend is to change fluids to what they recommend so I really don't know if there is an answer I'm not getting much help from anyone. The only other thing I can think of is that some how the insane notion that the skip shift is getting in the way which is according to the dealer
 

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Discussion Starter #19
My manual '17 scat was delivered in Dec and the trans is very smooth. Had to get used to the loose and sloppy throws, but very pleased with transition of gears.


Sent from my iPad using Tapatalk
*Cough* Barton *Cough*

A Guy
Would you think a Barton shifter might help? Tremec says that in no way the shifter could issues since it is positive shift linkage I believe they said but who knows maybe. I'm getting no answers from Chrysler or Tremec so not sure there is a fix for me
 

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Take it to another dealer near you with a good reputation. Start from scratch and get another opinion. Sounds like something in the drivetrain is unbalanced. I am having trouble figuring out how a transmission firmly affixed to the engine, and frame members can cause the vibrations you describe. Some dealers have transmission specialists. Maybe you'll find one who can give an answer.
 
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