66rfe Limp Mode - Stuck in 4th Gear

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mtofell

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2014 4X4 6.4 Hemi with 93K.

This is potentially tranny problem 2.0 as it originally blew up at 38K under pretty much zero load (stop/go freeway traffic) and was rebuilt under warranty. Post-rebuild it is/was okay but does have some scary clunky shifts at times and just generally feels like a POS. From reading of other experiences this just seems normal so it's hard to say if mine is out of the ordinary or not. If not for a Lifetime Maxcare warranty there is no way I'd own this truck past the 100K power train warranty. Anyhow, since the failure at 38K things have generally been consistent with no major problem... until yesterday.

Leaving town with family loaded into the truck on a **** poor rainy afternoon. As I was heading out of town, 2 lanes go to one, I get on it a bit to merge in front of slow car and I get a pretty hard/clunky shift. Honestly, nothing too out of the ordinary from the crappy shifts it does everyday but I do remember it. FF a few miles and I notice the truck is stuck in 4th gear. Can't shift manually, won't downshift when I hammer it, tow/haul mode doesn't change anything, tranny temp is consistent/low. Just moving along in 4th gear. By this time I'm 10 miles out of town on a state highway with pouring rain, my family in the truck and the bed full of luggage and crap for a weekend trip. I make the decision to just keep going (in 4th gear). We are about 50 miles from our destination with no stoplights and thankfully traffic is light. We make it all the way to our destination town and have to come to a stop (by this time at least I'm in a town so my thought process was a tow would be much easier and getting family and junk to hotel is only 2 miles instead of 50).

So, when coming to a stop (first time the truck had been below 25 MPH) it shifts down to 1st without incident. Then starts moving and shifting normally. I pull over, turn it off/on and everything is fine. Driven it all day today 3-4X and everything seems fine. From researching online it seems I went in "limp mode".

After all this rambling (sorry) I guess my question is, does going into limp mode once indicate a problem? Have any of you had this happen once or twice and it was just a fluke? This just sucks because I was already leery of getting stuck due to the original failure and crappy operation. Now with this I'm really going to be worried. I have my code reader and there is nothing. I know if I take it to the dealer they will just scratch their head and wonder why I have a question since the truck still rolls. From reading online, going into limp mode seems pretty common and many people say there is a solenoid that fails. Again, I'm just wondering if anyone else had just had a "fluke" limp mode episode or if it always turns into something. I really don't care what it turns into. I just need to get it to act up AND be able to show the almighty king of denial Ram dealer so it can be fixed.
 

Ionicbrick

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Hey bro. I’ve got a 2015 2500 hemi. My truck went limp while towing 4k in stop and go. No real reason for it, stuck in 4th gear. I couldn’t manually shift, so I just limped home. I turned the truck off and called the dealer right then. Service advisor told me that sometimes valves can get stuck and cause limp, and then be fine. He told me to restart the truck and check for codes (he knew I have a reader), I did and nothing. Truck came back like nothing happened. That was about 30k ago, and since then I’ve changed the fluids and had no issues since. Really unless it throws a code or does something wrong consistently, there’s not much the dealer could do. Mine has been strong ever since.


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NewBlackDak

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Mine did that 3 times over a month, and then stuck itself permanently in first. Bad solenoid. Replaced on warranty at 46K miles.


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WY.Ram

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I was less fortunate when my 2016 Wagon went into limp mode. I was 50 miles from my home with 200mi behind me, 3 am, hit a noticeable pothole or something in road surface, tranny kicks into 4th for limp otherwise everything seems fine, including tranny temp. I'm on interstate through the city and wasn't stopping. Make it home just fine, pull the trans dipstick level looks fine and smells like synthetic. Make appt with dealer, I drive it 20mi to the dealer, tranny no longer in limp, shifting as fine as the f 66 ever did but I'm pussying it in there, minimal throttle and just let it shift up under light load and never hard enough to shift down. But it felt kinda fine. I actually started hoping I didn't really need the dealer, but what the hell have him take a look. Drop it off but let them know it's seems fine, so here's a few other items I'd like addressed instead, delusional I guess.
Called me 48 hrs later to tell me I needed a new trans, $5700 but since we were bros he'd hook me up for $5450.
In shellshock I quietly thanked him hung up the phone. Collected myself called him back and we went toe to toe. He didn't budge, told me he could smell burnt fluid across three bays. Whatever, I said that's the only thing I did check and it smelled fine, save my tranny, I'll pay the core charge I wanna smell what your claiming. Never did produce anything burnt smell.
The price included a new torque converter as well. That was at 46k mi. I rolled 80k this morning and my then new tranny is kicking as much butt as any stocker 66rfe can. Much better then the first. The first was wrong from the beginning, just felt and acted weird sometimes.
I also was experiencing delayed engagement in stop and go traffic before this happened which I took it in for and they played the no code / can't duplicate the problem game. I didn't force the issue and should have. Delayed engagement is an indicator of a very serious problem (if tranny fluid level is good) I didn't realize it and I didn't want the bad news. So I didn't force it.
Never illuminated the CEL with a code, and never wrote a code to any log that was ever found. The code system on the trans sucks, no error code does not indicate no problem but the dealer acted like it was gospel truth.
I also experienced shifts on occasion, harsh downshifts, that I don't feel anymore.
If it were me at absolutely any other sign of trouble I would pay for a third party, specialist diagnostics, and then take those results to the dealer. There are many diagnostic tests that can be appliied to an automatic trans and they are far more effective then the service tech driving it around the dealership parking lot and claiming a clean bill of health.
Shoot, that vehicle carries your family, you might consider the diagnostics before the next sign shows up. As you know those kids are priceless, expensive lil f, but priceless[emoji846].
Good luck

'16 RAM 2500 pw with a Badass Greene tune feed'n & Fire'n the 6.4L w 6spd
CAI / ARH LTs / Solo / 5.13 AAM / 37" km3 at -25mm / DOR / Alfa / Locker Control Bypass / Purple Cranium / Z36 / Custom Graphics / 4% VLT Tint
 
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mtofell

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I was less fortunate when my 2016 Wagon went into limp mode. I was 50 miles from my home with 200mi behind me, 3 am, hit a noticeable pothole or something in road surface, tranny kicks into 4th for limp otherwise everything seems fine, including tranny temp. I'm on interstate through the city and wasn't stopping. Make it home just fine, pull the trans dipstick level looks fine and smells like synthetic. Make appt with dealer, I drive it 20mi to the dealer, tranny no longer in limp, shifting as fine as the f 66 ever did but I'm pussying it in there, minimal throttle and just let it shift up under light load and never hard enough to shift down. But it felt kinda fine. I actually started hoping I didn't really need the dealer, but what the hell have him take a look. Drop it off but let them know it's seems fine, so here's a few other items I'd like addressed instead, delusional I guess.
Called me 48 hrs later to tell me I needed a new trans, $5700 but since we were bros he'd hook me up for $5450.
In shellshock I quietly thanked him hung up the phone. Collected myself called him back and we went toe to toe. He didn't budge, told me he could smell burnt fluid across three bays. Whatever, I said that's the only thing I did check and it smelled fine, save my tranny, I'll pay the core charge I wanna smell what your claiming. Never did produce anything burnt smell.
The price included a new torque converter as well. That was at 46k mi. I rolled 80k this morning and my then new tranny is kicking as much butt as any stocker 66rfe can. Much better then the first. The first was wrong from the beginning, just felt and acted weird sometimes.
I also was experiencing delayed engagement in stop and go traffic before this happened which I took it in for and they played the no code / can't duplicate the problem game. I didn't force the issue and should have. Delayed engagement is an indicator of a very serious problem (if tranny fluid level is good) I didn't realize it and I didn't want the bad news. So I didn't force it.
Never illuminated the CEL with a code, and never wrote a code to any log that was ever found. The code system on the trans sucks, no error code does not indicate no problem but the dealer acted like it was gospel truth.
I also experienced shifts on occasion, harsh downshifts, that I don't feel anymore.
If it were me at absolutely any other sign of trouble I would pay for a third party, specialist diagnostics, and then take those results to the dealer. There are many diagnostic tests that can be appliied to an automatic trans and they are far more effective then the service tech driving it around the dealership parking lot and claiming a clean bill of health.
Shoot, that vehicle carries your family, you might consider the diagnostics before the next sign shows up. As you know those kids are priceless, expensive lil f, but priceless[emoji846].
Good luck

'16 RAM 2500 pw with a Badass Greene tune feed'n & Fire'n the 6.4L w 6spd
CAI / ARH LTs / Solo / 5.13 AAM / 37" km3 at -25mm / DOR / Alfa / Locker Control Bypass / Purple Cranium / Z36 / Custom Graphics / 4% VLT Tint

Thanks..... great info. Yeah, it's tough to know if anything is really wrong since it's always just kind of shifted and drove like crap :) From reading all the experiences it seems they kind of all just do that. Let's face it, Dodge/Ram is not exactly known for historically churning out quality transmissions over the years.

I always remember back in the 90s a guy came into the gas station I was working at. He was a total Dodge fanboy and was bragging about how his current Dodge Dynasty engine and tranny made it to 100K.... as if that were some great milestone. Granted back then cars weren't as reliable but Toyotas and Hondas were still easily going 2-300K.

I've got to drive home tomorrow so we'll see how it goes. Luckily, there is good cell service along the way so if it takes a crap I'll just get it towed home.
 

smurfs_of_war

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Man, every time I get a "stiffer than usual" downshift I crap my pants a bit because of threads like this. My '14 did that hard downshift for a couple days before it **** itself.

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smurfs_of_war

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I was less fortunate when my 2016 Wagon went into limp mode. I was 50 miles from my home with 200mi behind me, 3 am, hit a noticeable pothole or something in road surface, tranny kicks into 4th for limp otherwise everything seems fine, including tranny temp. I'm on interstate through the city and wasn't stopping. Make it home just fine, pull the trans dipstick level looks fine and smells like synthetic. Make appt with dealer, I drive it 20mi to the dealer, tranny no longer in limp, shifting as fine as the f 66 ever did but I'm pussying it in there, minimal throttle and just let it shift up under light load and never hard enough to shift down. But it felt kinda fine. I actually started hoping I didn't really need the dealer, but what the hell have him take a look. Drop it off but let them know it's seems fine, so here's a few other items I'd like addressed instead, delusional I guess.
Called me 48 hrs later to tell me I needed a new trans, $5700 but since we were bros he'd hook me up for $5450.
In shellshock I quietly thanked him hung up the phone. Collected myself called him back and we went toe to toe. He didn't budge, told me he could smell burnt fluid across three bays. Whatever, I said that's the only thing I did check and it smelled fine, save my tranny, I'll pay the core charge I wanna smell what your claiming. Never did produce anything burnt smell.
The price included a new torque converter as well. That was at 46k mi. I rolled 80k this morning and my then new tranny is kicking as much butt as any stocker 66rfe can. Much better then the first. The first was wrong from the beginning, just felt and acted weird sometimes.
I also was experiencing delayed engagement in stop and go traffic before this happened which I took it in for and they played the no code / can't duplicate the problem game. I didn't force the issue and should have. Delayed engagement is an indicator of a very serious problem (if tranny fluid level is good) I didn't realize it and I didn't want the bad news. So I didn't force it.
Never illuminated the CEL with a code, and never wrote a code to any log that was ever found. The code system on the trans sucks, no error code does not indicate no problem but the dealer acted like it was gospel truth.
I also experienced shifts on occasion, harsh downshifts, that I don't feel anymore.
If it were me at absolutely any other sign of trouble I would pay for a third party, specialist diagnostics, and then take those results to the dealer. There are many diagnostic tests that can be appliied to an automatic trans and they are far more effective then the service tech driving it around the dealership parking lot and claiming a clean bill of health.
Shoot, that vehicle carries your family, you might consider the diagnostics before the next sign shows up. As you know those kids are priceless, expensive lil f, but priceless[emoji846].
Good luck

'16 RAM 2500 pw with a Badass Greene tune feed'n & Fire'n the 6.4L w 6spd
CAI / ARH LTs / Solo / 5.13 AAM / 37" km3 at -25mm / DOR / Alfa / Locker Control Bypass / Purple Cranium / Z36 / Custom Graphics / 4% VLT Tint
At 46k wasn't it warranty? If not- did they give you a reason why?

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mtofell

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Man, every time I get a "stiffer than usual" downshift I crap my pants a bit because of threads like this. My '14 did that hard downshift for a couple days before it **** itself.

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It's funny - now, I'm starting to wonder if I've ever gone into limp mode before and just never noticed. I've had crappy shifts like the one right before limp mode many times. But if I just rolled along in 4th to a light or stop sign and then it kicked down to first I may not have even noticed.

After driving 40 miles in 4th and having to come to a stop it did kick down to first and seemed to behave normally. I suppose I should have just kept driving but I turned it off/on just to reset things. Anyway, yeah, I'm with you. Just more worried now that my truck is going to screw me and leave me stuck somewhere.

And I agree with you WY.Ram - the diagnostics for this tranny suck. Even when mine totally blew up I got no codes or error lights until driving it slipping and hammering into who knows what gear just so I could get off the freeway. It got so bad that I lost all forward gears and had to back into a parking lot to get out of the street (people probably thought I was drunk). Finally, almost in comic fashion, as I was backing into a parking spot, the CEL came on to "alert" me of a problem. Gee, thanks! :)
 

WY.Ram

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At 46k wasn't it warranty? If not- did they give you a reason why?

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Yes it was and yes they did. Not only warranty but Maxcare liftime warranty. I still shudder when I think of it because ... Well I shoulda and coulda done better.
I wasn't going to bring it up, it does drift off point a bit from OPs post but a very valid question, I will try to stay objective and keep it short as possible. So..
Several things came together to help the dealership **** the cost and let me pay for it. Mostly my patience. The delayed engagement was driving me f nuts. I didn't realize the implications of what d.e. could possibly mean.
I had been in contact with the dealership over the delayed engagement for several months. No code, no duplicating the problem so no action. I didn't force the subject or get a second opinion (major mistake).
Not my style to stand idle and I definitely wasn't getting rid of the truck, this may be my truck for a very long time, (although some of these new ones are exciting, but I love my truck AND I have a fair amount in aftermarket) so I decided to take on the betterment of the tranny myself (mistake). I did a pan drop fluid and filter change. It seem to help for a month or so, appr 1500 miles. The next sign of distress was the failure itself.
At the point of failure I revealed this maintenance to the dealership. Well I pretty much bought the trans right there. They used that for the reason the warranty was void and Even a step further the blamed the tranny failure on their claim that one of the filters was not seated.
The tranny fluid and filters was a response to a failing trans, it did not cause it. I was super diligent when I did the pan drop, but whatever. Mine against theirs. Didn't matter that I had several occurrences of delayed engagement already logged with the dealer, they wouldn't even discuss it.
So really, the point of all this is so other truck owners under warranty don't fear a voided warranty for no reason, but also dont give em a reason, if I ever have a system failure that is under warranty, I will get that third party opinion, documented, and take that to the manufacturer.
I truly believe a specialist's opinion would have been the difference before, during, and even after had I pursued it.
And now that I have as many miles on the new trans as I did the failed trans,
Doesn't change how much I like this truck, just the dealership in the area of where I live now (not where I bought the truck, mighta mattered)
Hopefully this alleviates any anxiety in others about any similarities.
One other note - any aftermarket listed in signature came after the dealer had claimed they could not reproduce the delayed engagement. I can't say enough about how much I dislike this form of diagnostics.

[/URL]'16 RAM 2500 pw with a badass Greene tune feed'n & Fire'n the 6.4L w 6spd / 5.13 AAM / 37" KM3 at -25mm / DOR / Alfa / Purple Cranium / z36 PowerStop / Custom Graphics / AVS ;/ Diode Dynamics /4% VLT Tint
 

WY.Ram

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@mtofell your statement wondering if it had gone into limp mode before and I didn't know....
I to have wondered that very same thing.
Mine has gone into Limp Mode twice, once for the tranny solenoid failed that was the reason for the tranny recall and once for the failure. Never did any code get thrown or any other indicator, notice, alarm etc get set to indicate a possible problem.
Even in my above post when they claim I left a filter unseated (total bs) did not throw a code.
I'm going to work on improving the shifting of my existing trans, depending on results I'd really like to have an 8-speed added to my mods. Other than being a lazy shifting unit, this new one feels solid. I've had guys advise that changing the valvebody would make all the difference in the quality of the 66.

[/URL]'16 RAM 2500 pw with a badass Greene tune feed'n & Fire'n the 6.4L w 6spd / 5.13 AAM / 37" KM3 at -25mm / DOR / Alfa / Purple Cranium / z36 PowerStop / Custom Graphics / AVS ;/ Diode Dynamics /4% VLT Tint
 

Rick Cicchetti

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Nerve racking for sure. My 18 2500 with 10,000 miles on it went into limp mode once that I am sure of...and possible twice. Both times while I was towing my 6,000 +/- lb camper. I got video of the whole thing one time. Took it to the dealer and got what I expected.....could not duplicate. Unfortunately, I was involved in a mountain biking accident and have not been able to get back to the dealer yet. Any tips on how to handle the dealer and the could not duplicate excuse? Should I go to another dealer? Talk to management? I also have a host of other issues....in the whopping 10k miles...I have been thinking...LEMON!
 

ski_medic

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BUMP - Sounds Like I got OPs issue... 2017

Greetings All -


Towing my new TT last evening and the transmission went to ****. The truck downshifted hard (felt like 4th to 2nd) realized it needed to upshift and went into limp mode. Seemed to be shifting between 1st and 4th. Wasn't that far into the trip and was able to get back home, albeit very slowly. I called FCA Recall to see if my truck fell under the T15 Transmission Solenoid Pack recall, but they couldn't provide me any info. Truck has 60,662 miles on it. Any ideas if FCA will honor the 60K Powertrain Warranty?


Thanks in advance.


Mike
 

NewBlackDak

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Mine did the same thing. It was not under the recall, but I had the solenoid replaced under power train recall.


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mtofell

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Funny.... I was thinking OP had my same problem but then realized I was the OP :) Shortly after this, the tranny took a total dump. I started another thread titled something like, "tranny failure 2.0" if anyone wants to search and find some more specifics.

They had it for about 5 weeks and two days after giving it back it crapped out again. Apparently, during the second rebuild someone tested the valve body and decided it didn't need to be replaced..... and it did. So, it was in the shop for another week and has been okay for about 9 months. And, by "okay" I mean it drives. The crappy shifts and whatnot are as bad as ever. After 2.5 rebuilds I get the feeling the inside of my tranny looks like a 50 year old stripper's cooch - lots of worn parts and battle scars.

I did just make it through my annual camping trip hauling my 11,000# 5th wheel out to the middle of nowhere. While it's a drag when my truck fails me it would be catastrophic during this trip so I'm just happy I made it. I should probably just get a new truck but this one is paid off and I have the Lifetime Maxcare so financially I'm really not risking much.
 

smurfs_of_war

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If the truck is paid for, maybe you could go to a decent transmission place and have them build one. I actually thought about that with my '15 since the trans in it started doing weird **** after the dealership 'serviced' it, but decided to take the financially irresponsible road and trade it off.
 
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mtofell

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If the truck is paid for, maybe you could go to a decent transmission place and have them build one.

I've got Lifetime Maxcare warranty and want to keep it intact. As long as the truck is valued at more than their crappy rebuilds I'm going to keep it.

Funny aside - I just bought a Jeep Cherokee for one of my company vehicles and was talking to the finance guy about my Lifetime Maxcare. He said FCA absolutely HATES that they ever sold those. Said they lose their asses on them. They aggressively go after the remaining ones to try to bribe people to trade-in.
 

jaflowers

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He said FCA absolutely HATES that they ever sold those. Said they lose their asses on them. They aggressively go after the remaining ones to try to bribe people to trade-in.

We get mail from FCA all the time to trade in our truck and Durango, both we bought with the MaxCare. Vehicle issues today are much more complicated and expensive to fix than years ago and we figured it'd pay for itself years down the road. If they still offered it I'd trade my 2500 for a new 2020 with the 8 speed but no way I'd trade it and not have the warranty.
 

michaelrc51

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@mtofell your statement wondering if it had gone into limp mode before and I didn't know....
I to have wondered that very same thing.
Mine has gone into Limp Mode twice, once for the tranny solenoid failed that was the reason for the tranny recall and once for the failure. Never did any code get thrown or any other indicator, notice, alarm etc get set to indicate a possible problem.
Even in my above post when they claim I left a filter unseated (total bs) did not throw a code.
I'm going to work on improving the shifting of my existing trans, depending on results I'd really like to have an 8-speed added to my mods. Other than being a lazy shifting unit, this new one feels solid. I've had guys advise that changing the valvebody would make all the difference in the quality of the 66.

[/URL]'16 RAM 2500 pw with a badass Greene tune feed'n & Fire'n the 6.4L w 6spd / 5.13 AAM / 37" KM3 at -25mm / DOR / Alfa / Purple Cranium / z36 PowerStop / Custom Graphics / AVS ;/ Diode Dynamics /4% VLT Tint

Yes.
The valve body takes the inputs from the solenoid and applies it. It's basically the brains of the transmission so it tells what pressures it wants when and where. Mopar OEM quality is bad on their VBs AND there are lots of areas in the VB where the quality affects the pressure. These losses of pressure cause clutch packs to not lock up when they're supposed to be locked up. When this happens it's just wearing away the clutches and cause excessive heat build up, both of which can destroy the transmission.

Due to these reasons a VB upgrade was one of the first things I did upon purchase of my 2500. It's a crap shoot, some are better than others but unless you constantly monitor your CVIs you'll never know unless there's a change in operation and then it's most likely too late.
 

6.4LMegaMan

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I just joined the club today with mine. 66,750 miles on it. Cruising along at 60mph and went partial throttle to accelerate up a hill and the truck shifted to first, hit redline then banged into 4th where it locked out. Pulled off the exit and it shifted to first fine. Upon pulling out it went from 1st directly banging into 4th. I immediately pulled over and disconnected the battery. Hooked it back up and restarted and it's been fine since. I've never had a single issue with this truck and it's been good since disconnecting the battery. Going to call the dealer tomorrow to get their opinion. I'm going camping next weekend and need to haul the camper so I'm pretty nervous at this point.

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mtofell

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I just joined the club today with mine. 66,750 miles on it. Cruising along at 60mph and went partial throttle to accelerate up a hill and the truck shifted to first, hit redline then banged into 4th where it locked out. Pulled off the exit and it shifted to first fine. Upon pulling out it went from 1st directly banging into 4th. I immediately pulled over and disconnected the battery. Hooked it back up and restarted and it's been fine since. I've never had a single issue with this truck and it's been good since disconnecting the battery. Going to call the dealer tomorrow to get their opinion. I'm going camping next weekend and need to haul the camper so I'm pretty nervous at this point.

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With an episode that violent I'd say there is a pretty good chance it is going to fail very soon. This is the kind of thing mine did 3X and it was failure each time. The best case is that it's just the valve body.
 

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