Recall R51

[TDRGuy]

This recall has just been released and if I were gooder at the interwebs I would post a link. (Help please.)
The recall involves, "your charge air cooler may develop internal icing in cold temperature regions."

How does a CAC ice? Where does the moisture come from?

Thanks, RP

 

[mwilson]

Found it, took a few minutes..

https://www.chrysler.com/universal/webselfservice/pdf/R51.pdf

 

[mwilson]

I don't what would cause it in the 1500 Eco-Diesel, don't hear of such a thing with bigger stuff. Must be the design??

I know the one and only Ford Eco-Boost in the dealership fleet had moisture / freezing issues within the charge air cooler. Recall is a little fuzzy, but I think there was an area in the bottom of that cooler where moisture could accumulate and eventually get snarfed into the engine.

 

[mwilson]

Some newer TDI's are suffering from this as well in my area from what I just read. Fingers pointed to EGR / Regens, ie. more crap forced back through the intake which increases the moisture content on humid days.
Much more study needed, I had not heard of this until now.

 

[mwilson]

Seth and I just hashed this over and we think the medium and large trucks generate so much heat from the radiator and surrounding items that the charge air coolers dry out all by themselves.

A small Diesel that is hardly working with modern EPA mandated controls will create a ton of moisture. That's the quick theory from Bangor, Maine tonight.....

 

[HPSimpson]

So since I live in California this fix is for you snow bunny folks!

 

[DonFitzwater]

I would believe a winter front should be in order for anyone in my latitudes.........

 

[TDRGuy]

Mike, thank you for the link and for the late-night Maine discussion on how moisture might enter the CAC.
Maybe some at Chrysler can help with the understanding of the moisture thing.

RP

 

[sag2]

I can't find a diagram showing the routing for the crankcase vent. But on this photo it is the upper right arrow (sorry the call outs didn't print) and if that goes to the fresh air side of the intake or turbo the moisture can enter there.

View attachment 3.0 Diesel Crankcase Vent.pdf

 

[HPSimpson]

I have looked on this in engine compartment and since what you are saving comes from the crankcase vent, would this be closed off from outside air. When engine is running this vent line would normally be warm from crankcase.

 

[sag2]

I have looked on this in engine compartment and since what you are saving comes from the crankcase vent, would this be closed off from outside air. When engine is running this vent line would normally be warm from crankcase.

Warm but high humidity that would freeze in the intercooler. Does it in fact go from the valve cover to the intake?

 

[HPSimpson]

I removed the large outer engine cover, Closed Crankcase Ventilation breather from left upper timing cover goes across the second engine cover back to area of turbo, hard to see what connected to at this time without taken more stuff loose to investigate further. I also do have a disk for 1500 3.0 Diesel and will go look see what I can find before taken more apart.

 

[HPSimpson]

So that hose from the left upper timing cover in fact goes to the EGR Air Flow Control valve sets right next to Charge air cooler hose. I hope this answer your question, so now I will put the engine stuff and both the primary and secondary covers back on and call it a night.

 

[TCDiesel]

The only way that the front is going to help is in extreme cold, CAC icing is common on terrain vehicles, Groomers, Skidders, Bunchers, ETC. Heck I seen 1 ED with that front on when it was 47* and sunny, I removed all that sound foam and the Pump cover it will never be re-installed unless the next buyer wants it.

Ram had better do a recall on the Oil-cooler before they go broke in replacing 50%+ engines form failed oil-coolers, if the winter turn extremely cold they will have more failures.

 

[DonFitzwater]

The only way that the front is going to help is in extreme cold.

Yep, that's what the front is for.

 

[JDancoe]

After reading the original post and checking th link, I sent an E-mail to Customer Assistance inquiring wether or not I would be getting a recall notice for my new Ecodiesel. I explained that I live in the Colorado Mountains and sub-freezing temps. are quite normal this time of year. (This morning at 7:30AM- it was -7 deg.at the house, and a brisk wind blowing).

I got a reply that the recall was V.I.N. specific and my truck wasn't included. No explanation if my unit has been modified in some other way to alleviate the problem. I'll be going in to my dealer for the first Oil Change (went 10K miles) and I will enquire then about the issue, and see if I can learn anything more, or if I should just buy a winter front kit on my own dime. They can't be that expensive, and I'm big believer that prevention beats the hell out of repair.
Jack Dancoe

 

[DonFitzwater]

Buy the winter front. It's a wonderful addition when the temps drop below zero.

 

[Jim W]

Buy the winter front. It's a wonderful addition when the temps drop below zero.

X2-- I have run a front cover on my 08, 6.7L since new. The front cover is installed in Nov and removed in April regardless of temps as long as they stay below 50F on a regular bases. I then start plugging in the truck when the temps are below 20F during the night. My truck has run great in the winter months and warms up fairly quick on those cold mornings when I have to get the grand kids off to school.

Jim

 

[JDancoe]

I'm going to get one for my truck. Question - do you fellows have one from the dealer, or from an aftermarket source?
I'm going to call my dealer tomorrow to schedule a service appointment, and will ask about the availability and cost from them.
Amen also to the block heaters. I have one on all my vehicles. The salesman said I wouldn't need one on the Ecodiesel, they start OK even in sub-zero temps. Maybe so, but I sure like having the heater working as soon as I get in the truck. I bought a cord from Geno's and installed it before the weather got silly cold. (Heater was already installed in the block.)

Jack Dancoe

 

[Jim W]

My Front cover is from MOPAR; but I bought mine on line for less than what the dealer would charge. Geno's Garage offers one for the 2500 and 3500 models they may also offer one now for the ECO-Diesel 1500 truck too.

Jim