2013 Ram 3500 68rfe issue after starting

[Mountain]

I start the truck and shift into drive. When I step on the gas the rpm increases and the truck does not move. It sometimes take 10 to 15 seconds before there is a direct acceleration. Today it went up to 1600 rpm with no truck movement (level ground, no towing) then after a few seconds there was a clunk and the truck started moving. It was not like this new and seems to be getting progressively worse. Seems to be worse after sitting for a while. Scheduled for the dealer next week. Any thoughts? Thanks.

 

[Wingate]

it appears that RAM is using the same junky anti-drain back valve on the torque converter they used on the 48??? Try shifting from PARK to Neutral for about 10 seconds, the drop it in DRIVE and see if it acts normal...

 

[Bug Out]

it could also be what Transengineer has told us, you have a bad filter letting the torque converter drain, causing the lag in movement. Once the torque converter fills, it moves. Causes, could be a bad spin on filter internal on transmission letting oil seep out of TC most likely.

Could be something else letting oil out of TC.

 

[sag2]

Sounds like drain back. Next time fire it up and let it idle in neutral for 30 seconds before putting in gear. If it moves right away that is most likely it. Also does it do it in drive and reverse? Transengineer wrote up a good description so you might want to search for it.

 

[Cummins12V98]

I don't think neutral matters on the new trucks. Fluid circulates in park and neutral both.

 

[Mountain]

Thanks guys. I appreciate the your knowledge. It seems the longer I sit at idle the less it happens. Sag2, it did do it yesterday in reverse. I will try 30 seconds in neutral in the morning and see how it reacts. I will search for Transengineers post. Thanks again.

 

[AlFischer]

Mine does it to. So did my 2001. (48RE) So did my 74 International with it's predecessor trans. (think it was a BORG 700)

Only disserence is on my 2014 it only takes about 2 days! PROGRESS!!!

 

[MattandLana]

That (typically excellent and helpful) post by TransEngineer can be seen here (post #25).

 

[Mountain]

Thanks Mattandlana.

 

[AlFischer]

The post by TransEngineer is quite interesting. Actually appears that someone is trying to correct this. My 2014 shows the leak down 'slow engage' after 2-3 days without starting. What I fail to understand is I have owned various cars including GM, Ford, Toyota, VW and an International Truck and the only ones that had this issue were the 2 Rams (2001, and 2014) and the old International. Why? What have the other brands done differently?

 

[Bill Stockard]

The post by TransEngineer is quite interesting. Actually appears that someone is trying to correct this. My 2014 shows the leak down 'slow engage' after 2-3 days without starting. What I fail to understand is I have owned various cars including GM, Ford, Toyota, VW and an International Truck and the only ones that had this issue were the 2 Rams (2001, and 2014) and the old International. Why? What have the other brands done differently?

Your old '74 International had a Chrysler 727 in it, IRRC.

Bill

 

[AlFischer]

I think you're right! It was a long time ago. And it leaked down too!! Someone said it started (I think) as a Borg something.

 

[EDankievitch]

Thee was a thread on here about the spin on filter having a bad check (drain back issue) valve. The guy that had posted it had asked for us to send him the bad filters so they could be inspected.

 

[AlFischer]

I read that post (link is several msg before this post) and it is encouraging. I will print it and give it to my dealer when I go in.

 

[Bill Stockard]

I think you're right! It was a long time ago. And it leaked down too!! Someone said it started (I think) as a Borg something.

Yes, they were Borg-Warner up until the last 2 or 3 years of production. I don't remember the exact production year it happened... been a lot of water pass under the bridge. I never owned an I-H pickup even though I worked for them. It created a little "controversy" at times.:-laf

Bill

 

[AlFischer]

Well Bill, I owned one of them. It was a SERIOUS work track. Crew cab, 350 something engine and the old 727 trans. Would walk away with firewood stacked 5 ft high! Now, stopping it was another issue! Got 10 mpg. No more - no less. Had to re-gasket the engine to keep oil in it. Actually harder ride than mi 2001 Ram 2500! But a real workhorse.

 

[Bill Stockard]

Al,

Either an I-H 345 CID or a 392 CID V-8. You probably had a 345 which was the most common engine. Yep, they leaked oil around the valve covers. Yellow weatherstrip glue on the gaskets was the best solution to stop the leaks, but required a stick of dynamite to get them off.:-laf

Bill