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Old 04-19-2014, 03:43 PM   #11
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Dang, with a 450 beast you should be able to throw a chain around the mountain and just haul it out of the way. Something must be wrong if it's struggling. My last truck was a 250 diesel and it hardly worked at all going through the smokies.
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Old 04-19-2014, 08:48 PM   #12
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That really concerns me.. makes me wonder if you have a turbo problem. If so, should be an easy fix. Good luck and let us know please.

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Old 04-21-2014, 12:15 PM   #13
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I'll definitely keep everyone posted on what comes of it.
About the time I was pulling in to the dealer lot on Saturday the check engine light had come on, and shifting was getting rough. I have read some concerning things about the rough shifting on the early 2011's where a new TC and flywheel was the fix..hoping thats not the case. I went back and looked at a pic i took of the cluster and it showed the tranny temp about 217 which I think is about normal for towing so not sure if there is actually an issue there or not. I will be calling them later today to see if they have an update for me.
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Old 04-21-2014, 03:50 PM   #14
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Quote:
Originally Posted by Helmsey View Post
I'll definitely keep everyone posted on what comes of it.
About the time I was pulling in to the dealer lot on Saturday the check engine light had come on, and shifting was getting rough. I have read some concerning things about the rough shifting on the early 2011's where a new TC and flywheel was the fix..hoping thats not the case. I went back and looked at a pic i took of the cluster and it showed the tranny temp about 217 which I think is about normal for towing so not sure if there is actually an issue there or not. I will be calling them later today to see if they have an update for me.
There is a TSB for the rough shifting. Some that have not been corrected end up with a messed up shift solenoid. Not a big fix at all. Can be done in about 4 hours. These 6 speeds do run a little warmer than the 6.4s. Scared me to death watching the temps the first heavy tow too. After the solenoid has been replaced, some of them benefit from a TCM(transmission control module) reflash. With these new diesels though, the engine light can be numerous things. The great thing about setting a CEL(check engine light) is that the problem is already identified and the techs can start the repair process.
Let us know how you come out.
Monty
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Old 04-22-2014, 12:01 PM   #15
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Just got off the phone with the service guy and he said the secondary cooling system was bone dry....no coolant at all in it. I asked how much coolant lives in that system and he told me 2 gallons max. I know Saturday before I hooked up I gave everything a once over and there was coolant in that resivour on top of the fan shroud. He said they left it pressurized with water last night and they came in this morning and did not find any leaks. They are going to pull the EGR pipes off and see if they can see anything that way that might be causing this issue.
The CEL was showing a code for a low pressure in the secondary coolant system, makes sense if there wasn't coolant in it, and that is why i was feeling the loss of power. When that particular code is thrown the engine will derate itself..understandable.
They are supposed to know more this afternoon and he will call me with an update.
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Old 04-22-2014, 02:09 PM   #16
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Wow..ok..totally didn't see that one coming, but if that is the case, it makes sense to start with the coolers. Only heard of this one time. I spend quite a bit of time over here on the 6.7L Power Stroke Diesel - Ford Truck Enthusiasts Forums forums with the 6.7L. Check it out if you have time. Some of the guys/gals here are over there too.

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Old 04-23-2014, 12:36 PM   #17
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I have spent some time recently browsing those forums, they can be dangerou$ for me however so I try to limit my time there
I was happy with my old Duramax until I started browsing their forums and was introduced to EFI Live tuning....it got expen$ive after that
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Old 04-25-2014, 12:12 PM   #18
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Update time.
Just brought the truck home from the dealer. They were unable to tell me where the coolant went, but suggested we replace the EGR cooler and charge air cooler as they have seen those be issues in the past. By replacing those they told me with 99% certainty that it will resolve the issue of losing coolant. I did purchase an additional powertrain warranty when this truck was purchased but of course this is not considered powertrain so I had to fork out the $$ from my bank account...perfect timing as we leave for Disney next week.
But on the bright side they did detail the truck and it looks fantastic! Just hated to drive it back to the office in the rain, again perfect timing.

I am going to storage tomorrow to hook up the 5er and will take a nice little ride with it for an hour or so to see how it does. Fingers crossed all goes well.
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Old 04-25-2014, 03:14 PM   #19
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Good luck. Sure it will be fine!

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Old 04-26-2014, 04:36 PM   #20
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Well, got the 5er hooked up today and pulled through 50 miles of various hills, and it went FANTASTIC. I was able to set the cruise about 65 and never had to touch the go pedal, and never dropped a gear trying to make the top of the hill. This is part of the exact route we towed on the way for our last trip and it was night and day difference.
One hill in particular on the way home I dropped about 15MPH on, this time I was able to hold cruise no issues. About half way up the hill I hit the go pedal and easily accelerated to 70MPH so no worries now if I need to pass going uphill.
This puts my mind at ease for our trip next week, no worries now.
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