Bucking at first shift

[tbone63]

Mine is similar. It's fine.

 

[16RamHemi]

my last truck was a 2016 express 8 speed 3.92. That thing hated teh cold. it would shift hard, sometimes slip a bit on the 1-2 shift. Once warmed up i had no symptoms what so ever. I felt that when cold if i was easy on it (especially when really cold) and let the tranny shift slowly accelerating was the worst. The more throttle i gave it to get going the better it was. The truck i have now is a 14 sport 8 speed 3.21 rear. When cold it has a harder 1-2 shift. But thats it for any issues (besides it always wanting to shift at low rpms). So i would say this is all normal, with the differentiator being the cold. If it is doing this when warm then thats another story. To keep this in perspective, im calling cold anywhere from 0 to 32 here in Maine. Try being a little more aggressive with it (not dropping the hammer, just a bit more throttle accelerating more). See if it still does it. I feel these 8 speeds work the best when being worked. Let the computer make the decisions and it gets a little iffy. Atleast to me anyway.

 

[mohemipar]

Harder shifts, especially 1-2, or on deceleration when cold on the ZFs are normal. This goes for Ram, Jeep, Dodge, you name it. Every ZF Mopar I’ve owned has done it. In my experience the more the car learns your habits the less it should do it. My Charger will do a harsh 1-2 when accelerating slower dead cold. But it goes away after a minute or two. They shift much more harsh in manual track mode and its perfectly normal.

I don’t know if someone else said it but since you bought it new and have only put on a few thousand miles, I’d try disconnecting the battery for an hour and then the truck will start a “relearn” mode of your driving habits. I’ve heard sometimes when they get a new owner the computer doesn’t quite grasp a different driving style without a reset. 30K+ miles of one guy doing the same exact driving is a while.

 

[RamCares]

I tried putting it into neutral today and let it stay there for a minute before shifting into drive and it still gave me that first buck when shifting pretty aggressively today. I'll be taking it in this week when I can plan it out getting there and back and I'll keep it updated with results

Hi Taylor513,

We're sorry to hear that you're having a tough time with your Ram! Please let us know if you are in need of additional assistance while in service by sending us a private message.

Darlene
Ram Social Care Specialist

 

[Taylor513]

my last truck was a 2016 express 8 speed 3.92. That thing hated teh cold. it would shift hard, sometimes slip a bit on the 1-2 shift. Once warmed up i had no symptoms what so ever. I felt that when cold if i was easy on it (especially when really cold) and let the tranny shift slowly accelerating was the worst. The more throttle i gave it to get going the better it was. The truck i have now is a 14 sport 8 speed 3.21 rear. When cold it has a harder 1-2 shift. But thats it for any issues (besides it always wanting to shift at low rpms). So i would say this is all normal, with the differentiator being the cold. If it is doing this when warm then thats another story. To keep this in perspective, im calling cold anywhere from 0 to 32 here in Maine. Try being a little more aggressive with it (not dropping the hammer, just a bit more throttle accelerating more). See if it still does it. I feel these 8 speeds work the best when being worked. Let the computer make the decisions and it gets a little iffy. Atleast to me anyway.

Interesting how these 8 speeds react to the cold. Good to know though, thanks for info. I'll give it a little more throttle next time and see how it responds and i'll report back when I do.

 

[Taylor513]

Harder shifts, especially 1-2, or on deceleration when cold on the ZFs are normal. This goes for Ram, Jeep, Dodge, you name it. Every ZF Mopar I’ve owned has done it. In my experience the more the car learns your habits the less it should do it. My Charger will do a harsh 1-2 when accelerating slower dead cold. But it goes away after a minute or two. They shift much more harsh in manual track mode and its perfectly normal.

I don’t know if someone else said it but since you bought it new and have only put on a few thousand miles, I’d try disconnecting the battery for an hour and then the truck will start a “relearn” mode of your driving habits. I’ve heard sometimes when they get a new owner the computer doesn’t quite grasp a different driving style without a reset. 30K+ miles of one guy doing the same exact driving is a while.

Interesting more and more reports of it happening when its cold out, wish it was summer so I could know for sure if that was the case. That's a good idea I've had never heard of that before. I'll give that a try when I'm off this week and see if it changes anything.

 

[Taylor513]

Hi Taylor513,

We're sorry to hear that you're having a tough time with your Ram! Please let us know if you are in need of additional assistance while in service by sending us a private message.

Darlene
Ram Social Care Specialist

Thank you very much I appreciate it, I'll be sure to reach out if I need some additional help.

 

[Taylor513]

I'll be parking it tomorrow night at the dealer and then I have an appointment at 10:00 the next morning and I'll let them start it up and run it while I sit passenger and see what they think. When I get a verdict I'll report it

 

[joshuaeb09]

I'll be parking it tomorrow night at the dealer and then I have an appointment at 10:00 the next morning and I'll let them start it up and run it while I sit passenger and see what they think. When I get a verdict I'll report it

Not a bad plan. Mine stopped behaving like that cold after one of the last dealer updates and got better with the custom TCM tune so it could just need a software update. My Challenger 8 speed was pretty bad about it on the stock TCM calibration, got way worse when I played with the diablo "performance" TCM tune like barking my 305's going 1-2 at light throttle bad (Complete crap on both the trucks and cars IMO), and it's gone with the custom TCM tune. Now at WOT my 1-2 shift will bark the tires on both, but driving like a normal person it's very refined.

 

[mohemipar]

If you get continual hard shifts after the first few minutes of driving and/or if the shift is so rough you are actually feeling the whole vehicle shudder I would be inclined to think something isn’t right.

 

[16RamHemi]

If you get continual hard shifts after the first few minutes of driving and/or if the shift is so rough you are actually feeling the whole vehicle shudder I would be inclined to think something isn’t right.

i agree. this is different and would need further inspection.

 

[Taylor513]

Sorry for the delay but I ended up taking it in late last week and parked it there at the dealer and the next morning I went in for my appointment and waited a bit before I could take it for a test drive. I didn't get a tech to go with on the test drive but the guy that runs the service dept. because of the volume of the vehicles that they were working on. I offered to let him drive and he insisted that I should drive because I would know how to make it do it. Well.. it didn't do it all (of course) it shifted fine and didn't show any thing weird about it. Through out the drive of course he's saying that he's not noticing anything. We take it back to the dealer and after describing what's going on with it he suggests a few different things after thinking it over I decide to just do it. (I'll attach photo from my phone) Unfortunately it's not covered under warranty and is considered just regular maintenance. He says that it should take care of any issues that it's having. When I picked it up later that day he explained to his tech of what I described and said that I'm doing the right service and this should take care of the issues. Unfortunately it didn't take of the issues and I have to do a 100% vitrifaction but my engine seems to have gotten the hemi tick back after they did this. It was getting pretty quiet with RL oil but seems to come back I'll have to keep listening to 100% verify that though. But I'm wondering if its a common thing like reported earlier and its just the colder weather that these 8 speeds aren't a fan of or if there is truly an issue going on

 

[Taylor513]

 

[joshuaeb09]

View attachment 152278

The tick is back from all the solvents that were just run through that engine with the top end cleaning. It could also be injector noise from the solvents, but they should be pretty damn clean now. When I do mine myself I always do it right before an oil change and then change it immediately after running it down the road and back to get that crap out. It gets way darker than normal after doing an induction service on any vehicle I've ever done an induction service on.

 

[Taylor513]

Oh gotcha makes sense. It was a bit more noisy than usual for the first couple days but I paid attention to it this morning before getting in and it was pretty quiet again and didn't hear a tick going on

 

[Coramie]

I have a 2015 5.7 that when ever it first starts up and I put it into drive it will buck when it shifts from usually 1st to 2nd gear driving down the road and kind of runs funky. That's the only time that it does that. Once it warms up it's usually fine except that it also will buck when starting to slow down and come to stop, almost when it comes to a complete stop at a light. The motor has 34K miles on it, I bought it with 31K on it and the only thing that I've done is replace the air filter and change the oil to RL 5w-30 but this issue was happening before (did not do this or notice when I test drove it before purchase). It is a CPO which was one reason why I bought it and I took it in within the first 2 weeks of owning it and they said they didn't find anything wrong with it. They said they checked the computer and inspected it. I have paper work at home and I can post what they exactly said about it. I can also suction cup my GoPro to the side of my truck at first start to show / hear whats going on with it. The carfax also showed that it had its left rear axle replaced at some point before not sure if that's playing a part in this or not. The truck was a lease and was owned in Colorado before and is now in Arizona. Has anyone ever had an issue like this before or have an idea of whats going on?

Thanks for any input

The first couple of shifts on mine are a little less smooth too. Pretty much every vehicle I’ve ever owned has shifted a little differently when the fluids are cold. As far as the bump stops, my guess would be that the dealership that sold you the truck reprogrammed the learn sequence on the tranny. I bought mine used too and fought the urge to bring it back for the exact same reason. However, after about 5,000 miles I noticed it was doing it much less. Now, at about 6,600 miles, it has learned my driving habits and has completely stopped hard shifting altogether. Had I brought it back, they would have just relearned the tranny again, which would have prolonged the process. Luckily I took all the input I read on this and the other Ram forum and decided to give it time to acclimate itself to my driving habits. Worked out perfectly. Patience really is a virtue.

 

[Cordwood]

2017 hemi 8 speed w 21k miles. Just got it 2 weeks ago. I have the same thing. It's very slight though and not every single time.

It's cold here in Connecticut. In the morning I always back out of the driveway then switch to drive. That first shift to drive sometimes has a slight buck. Then it's fine all day after that. I'm pretty picky and it's slight enough it hasn't worried me yet but I did take notice.

I just attributed it to being cold / not fully warmed up .

 

[U&A]

Hopefully they know the proper procedure to check the fluid-

My 2018 shifts wonderfully with no hiccups. Definitely not normal

Yes the procedure is very extensive ......and strange.


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[16RamHemi]

2017 hemi 8 speed w 21k miles. Just got it 2 weeks ago. I have the same thing. It's very slight though and not every single time.

It's cold here in Connecticut. In the morning I always back out of the driveway then switch to drive. That first shift to drive sometimes has a slight buck. Then it's fine all day after that. I'm pretty picky and it's slight enough it hasn't worried me yet but I did take notice.

I just attributed it to being cold / not fully warmed up .

funny you say this. i have never experienced this before. but over the last say week or so first thing in the morning i back into my turn around in driveway and when going into drive i get a bump. not every time though. im going to try as hard as i can to see if it goes away (or doesnt do it) if i go from reverse to neutral, pause, then to drive instead of reverse click click to drive. i just dont think these things like the cold.

 

[joshuaeb09]

Yes the procedure is very extensive ......and strange.


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It's annoyingly German.