Hey guys
So I figured I'd give it a shot and see if the community can help me
figure this one out before I start throwing butt loads of cash trying to
narrow it down and fix it.
So randomly 2 weeks ago truck felt like it lost power going up an incline
almost like it was slipping the gear then stalled out on me.
Started up no problem and drove home fine. Later that day driving around noticed going into second
sometimes felt little rough with a slight delay
engaging drive from park. Checked fluid and topped up.
For a week after this truck ran perfectly fine no issues what so ever and
to this day has yet to throw any engine codes.
So about few days ago truck would run perfectly fine when cold but once transmission got up to temp
( Around 30*c or 86*F) would shift perfectly fine and normal but would stall out on me when ever coming to a stop.
Reverse had no issues only (D) Drive. Fast forward to today, now truck pretty much
stalls out on me when engaging drive or coming to a stop
when tranny is only few degrees warm or heated up, and also reverse will stall out on me too.
Check temps and it has never gone over 50*c since all this started happening so I know its not overheating.
Checked fluid level/ color and smell from dipstick and all is well. Havent dropped the pan yet to look for debris
but that's next step. Truck has a tune and have tried this on OEM tune and on aftermarket tune makes no difference acts the same.
I also have a Circle D 258mm PRO II 3000rpm stall converter installed as of last july.
I have heard everything from failed converter to just clogged filters to failing front fluid pump..
This is all on a 545rfe 2011 4x4 Hemi Sport Crew Cab, issues are in 4wd and 2wd.
Can someone shine some light on this for me ?

 

sounds like the torque converter is not unlocking.

 

I thought that was a possibility
The fact that its not throwing any codes if you had to put blame on
a component would you say its the torque converter failing? Or something
making it stay locked up?
Just to note , always fires up every time after a stall, and shifting into neutral coming to a stop it will idle happily all day long and wont stall. But even after a stall then restart as soon as I go into drive she craps out on me.

 

That or too many clutch packs engaging at once....long shot.

 

could be that the TC Clutch solenoid is bad. I'm no sure where it is but probably somewhere in the valve body part of the trans. When working properly, the 545RFE does not allow the TC Clutch solenoid to lock the TC unless it's the upper gears, 1:1 and up. So next time you get going when cold and everything is working, select tow/haul and click down to gear selection 3 (2nd prime). This should keep the solenoid from ever commanding the TC to lock. Drive around for a while until you think the trans is hot enough for the problem to be occurring. If you can stop and not stall, do this a few times. Then select 4 (1:1) the TCC solenoid will then command the TC to lock. Try to stop to see if the truck stalls. I'm just trying to see if the problem is that the solenoid is sticking on versus the TC being bad. If it's the TCC solenoid, you should be able to get to it with the trans in the truck.

Better yet, go get a new solenoid and pay a trans shop to replace it.

 

My gut tells me it is the TQ converter that is the culprit. Stalling out in Drive is definitely a symptom of a faulty TQ converter. I would think a solenoid malfunction would be picked up by the PCM. But then again maybe not. Hopefully it is just a solenoid and not the TQ converter. Obviously trans is coming out for the latter.

 

02Regcab,

I am sorry to hear about your stalling concerns. I have had a chance in dig a little further into the symptoms you're describing. It is possible the Powertrain Control Module (PCM) may need attention. The PCM regulates many functions including the ignition timing, some transmission features as well as idle speed.

If locating the source of your stalling concern is an issue, it would be beneficial to speak with the Service Manager at your local dealer. A diagnosis would likely be able to isolate what is responsible for your issue. If you are able to duplicate the stall for the dealer, it would aid the diagnosis process.

Keep us posted if you can,

 

The dealer may put a scan tool on it and tell him what they think is wrong but, this guy has an aftermarket high stall speed TC and a tune. The only reason for all that is for racing. Combine the high stall speed TC, tune for torque management away from factory specs, and you have trouble with the warranty.

 

My warranty was up 13,500km ago so I'm not concerned about them caring
what has been done aftermarket to my truck.
So tried the running in 3 on select shift with tow/haul mode on and everything
good until around 20-25*c on the tranny temp gauge , then stalls when coming to
stop again, the symptoms can easily be repeated for a service manager to see but
I know they have their own wallets in their best interest. Im just trying to educate myself
more on what could be wrong before I bite the inevitable bullet and take the truck in.

 

As already mentioned, sounds like a torque converter issue.
Does your AFTERMARKET TC have a warranty...???