Wont go when cold

[Lordsman]

Bought a 2014 Ram 6.7 SRW with Aisin a few months ago. Previous owner had just done the trans fluid change using ASRC fluid and appropriate filter filling with 7 qts. I drove it home and checked fluid level hot with motor running and trans in park. It was at bottom of ADD level at stick so I filled it up to full. Loaded the slide in camper and off to Yellowstone. First morning up there after I started it and let it warm up about 5 minutes maybe a little more and drove off. Down the 20 mph dirt road and got to the highway. All clear to go pressed the pedal to get going and sputter sputter sputter... I'm not going anywhere! Like a dead pedal almost. Pulled over, stopped, put in park and motor revved perfectly, put it back in gear (in tow haul mode) and still wouldn't go. Waited a few minutes of revving up... put it in gear and it "caught" and off we went. I made a point the rest of the trip to let the truck warm up a lot more in the morning and we had no other issues, pulled nice and everything for the 10 day trip. That was a month and a half ago.
Last night it got cold here in the Colorado mountains. So I plugged it in all night. Got in in the morning, idled fast for few minutes drove about a mile till the highway. Went to "punch it" a bit to get going and a "dead" pedal again. Finally it caught and off I went. Notice the truck seems sluggish when cold. Great when its warmed up a bit more.
What is the deal! Is this common when cold? Never have a problem after its warmed up completely. At the time of "dead pedal issue" my temp parameters were: 175 coolant, 90 degree transmission, 158 degree oil, and 35 PSI oil. Haven't checked for codes with a scanner.

 

[Lordsman]

Was wondering if it could be the torque converter draining out issue also. I've heard it happening with the 68RFE if trans filter is loose or check valve bad.
Do Aisins have that too? Seemed to me Aisin trans filter was very different than those on a 68RFE.

 

[Ozymandias]

Overfilled is my guess, fluid is foaming.

I experienced EXACTLY the same symptoms, and sure enough there was more then a quart to much in it from the service station.

Leveled it in, problem solved.

 

[Lordsman]

Well sounds like an easy fix to drain some out. I'll give that a try. Thanks

 

[Cummins12V98]

At operating temperature on LEVEL ground is your fluid at the full line? If so there is something else gaping on.

ZERO reason to do much warm up for things to operate properly.

 

[Ozymandias]

Well sounds like an easy fix to drain some out. I'll give that a try. Thanks

It's hard to have to little of fluid in it but very easy to have to much.
As a rule of thumb, always insert the dipstick both ways that are possible, the result can be different.

No need to have it filled all the way to the max, there is no benefit from it. Keep it within the safe range and all is good.

 

[gsbrockman]

A good rule of thumb with the filter change on an AS69RC is about 9.5 quarts. The 7 the previous owner started off with is even shy of the 7.2 quarts a simple drain & fill calls for.

How much did you add to it @Lordsman ?

If it is still exhibiting characteristics of slippage.....I wonder if the filter is seated corrected in the transmission.....and I also wonder if the filter is aftermarket or OE Denso?

 

[Lordsman]

I added 1.5 quarts to it to bring it to the full mark. Maybe since the fluid was at room temp it's expanded so it might be a little too full. I'll reduce it a little bit see how it runs then. Interesting that this morning it ran great. I fired it up using the grid heater as I didn't plug it in overnight because I didn't think I'd use it today. I was late so I wasn't babying the throttle like I usually do when it's cold.

 

[Lordsman]

Previous owner gave me the parts receipt all from the dealer.
Transmission filter #68224232AA, $103
Fluid #5189966AD, $14.20 qt.
and a Trans gasket $49.50.

 

[Cummins12V98]

OUCH! Hope he was offered LUBE.

 

[Lordsman]

Removed about 1.25 qts of fluid. Level down in lower section of safe area now. I'll post results when I get them..
Thanks

 

[Cummins12V98]

I would be sure to check at operating temp on LEVEL ground.

 

[cerberusiam]

Engine sputtering and dead pedal does not indicate transmission issue, rather fuel or electrical problem. A transmission that is not engaging would more than likely allow engine to rev to redline when throttle is applied, especially after being driven for a bit to warm up then working again almost immediately. I would look at fuel contamination, batteries and\or cables first, then a charging problem.

 

[Lordsman]

I agree with you. Only does it when cold on start up. If I let it warm up a while I don't have the problem. Wondering if this truck has a throttle position sensor or?
Thanks

 

[cerberusiam]

No TPS, it has APPS attached to the pedal on inside of firewall. They are usaully pretty robust and unless you actually track a DTC to the APPS likely not the problem.

If it ha snot been deleted in has an item almost like a shut down device in the air horn that can be buggy. MAP sensor run with EGR gets dirty and messes up. I would get code spulled and se eif it shows anything that be pointed to and change the MAP sensor if it is dirty.

 

[Lordsman]

I'll get codes pulled up as soon as I can. Hopefully something will show up.
Thanks

 

[Lordsman]

The saga continues and getting worse!
It seems the truck has its problem when going into regen mode.
The truck will "buck" around, like kicking in then kick out (sputter), then I get a dead pedal. I can press pedal to the floor and nothing, then suddenly it will catch and I've got power again. But then it goes dead again and so on. Seems like regen mode is cutting off fuel to the engine. I have got the P20E8 (reductant pressure too low) code once with CEL but it's not giving me a CEL anymore. When in regen is there a valve or something that sends fuel to the DPF? Seems like it eats up fuel pretty good in regen also.
Once regen is done I'm back to running normal again with full power.
Any ideas? I've searched to see in anyone else has this issue. Am I the only one?

 

[Tuesdak]

Still when cold? I wonder if a fuel heater isn't enabled.

https://www.turbodieselregister.com/threads/most-2013-and-some-2014-no-fuel-heater-engaged.245765/

 

[JR]

The code you referenced has nothing to do with regens. DEF is injected across the scr catalyst to neutralize NOX and does so near continuously. If the dpf is healthy a regen happens roughly every 15 - 25 engine hours depending on a few variables like % of idle time and fuel burned. You should not be experiencing a regen every time you drive the truck. If you are there should have a message in the evic or a CEL.

 

[Lordsman]

Tuesday, thank you for the link. Looks to me like that is the problem. Temperature was down to -9 last week and daily been at highest daily in the 20's.
Bought the truck in the summer never had an issue. It started happening when we took in to Yellowstone in early September, it got cold and the problem began. Previous owner probably knew about it and didn't tell me?!
Thanks JR I was wrong in thinking it was a regen issue.
I'll get the info together and contact the dealer near me for a flash/update repair. Need my truck!