Any opinion on the 6.7 engine?

[HerbW]

Hi. I'm thinking about buying a 2007. 5 diesel with a 6. 7 engine and automatic in it. I have now a 1998 12 valve diesel. The reason I want to go newer is the regular four doors, newer six speed auto transmission and factory rear disk brakes. Is there any good mileage with the new engine? How about depenability, etc? Any ideas are appreciated. Thanks, Herb

 

[HBarlow]

If you ask folks who don't own one and never have you'll often hear negative comments. Most of us who own one are very pleased with our trucks. My '08 has 120k troublefree miles. So far it's been a great truck.

TDR member EB, who is an oilfield hotshot hauler, has more than 450,000 miles on an '07. 5 6. 7 cab and chassis. His truck pulls a huge flat bed tandem dual wheel gooseneck trailer every day loaded with heavy oilfield equipment. He has had a couple of maintenance item failures but the engine, Aisin six speed transmission, and basic truck have been troublefree for him.

Another TDR member who has disappeared, TulsaOkie, is also a commercial hauler. He put similar miles on one before he sold it and bought another new one.

Some of the early '07. 5s and '08s that were only used for short trip basic transportation, aka grocery getters, had smog issues with dpfs, egrs, and turbos. Minor hardware and software changes by Cummins/Ram eliminated those issues but the fact remains, because of the emissions crap forced on the manufacturers by the Economy Punishment Agency, these new trucks are not well suited for a daily unloaded short trip duty cycle. If your duty cycle will allow the truck to work as intended they are great trucks.

 

[pcarlson]

I would agree with Harvey. Early problems with emissions but all were fixed by Cummins and Ram. The last software update seemed to do the trick for all models 2007. 5-2009. I had 43,000 on mine with no issues and have since did a delete of the DPF. I would buy mine all over again. The 6. 7 is a very good motor and I believe will prove itself as durable as the 5. 9 was.

 

[Bob4x4]

buying a used 6. 7 carries a higher risk than a used 5. 9. The cost to replace the aftertreatment will spoil much of the advantage of buying used. The risk is not huge but be aware there is no way for you to know the conditions the truck was used under. The factory scanner can see a lot of history but that same scanner can reset it so it is not a 100% sure thing. The engines themselves are very strong and durable if cared for and properly fed. The injectors were improved materials from the 5,9 crd versions. Along with the refinements and creature comforts the cost of ownership tends to be higher than the early models. For the diy guys there is getting to be less that you can do as far as testing goes due to the computer systems now being used in every system on board. Good luck with your new to you purchase,make sure you do your pre-purchase inspection for a transition that will be as stress free as possible

 

[BruteForce]

I'm on my 2nd 6. 7L CTD. . No reportable issues, tons of power for towing my 43' 5th wheel / toy hauler!

 

[EDankievitch]

If you can wait for the 2013's do so. The 13's will have the DEF emmissions system and should deliver much better MPG's. I have a 2012, love the truck love the power hate the fuel econ.

 

[AHarris]

On my second 6. 7 and 100K mostly trouble free miles between the two, except for an exhaust pressure sensor which was taken care of under warranty (TSB). Other than normal maintenance, a trouble free engine. Fuel mileage is nothing to write home about.

 

[Barry]

After 6 new 5. 9s in a row(all manuals... would not buy a 48RE), last year we rescued an '09 with 56,000 miles(see sig) from a Ford dealer. In the past year, we have ran over 50K miles on the unit. Overall, I am well pleased with the exception of the short oil changes mandated because of the Environmental Persecution Agency. Someone should stick a garden hose up the EPA's butt and then tell them to breathe and see how they like it!

Fuel mileage is comparable to my 5. 9s but the power is such that I have done no power enhancements. My truck came with 3:73s and I thought I would just tow in 5th. Much to my surprise on the first trip out pulling a 40' triple axle toy hauler to one of my dealers in Mo. I dropped it in 6th and it just walked right on down the road. If I see a long hard pull ahead, I slip it back into 5th.

Overall, well pleased but giving a great deal of thought to casting the religion out of the engine... ... ... ... ... ...

 

[RVTRKN]

TDR member EB, who is an oilfield hotshot hauler, has more than 450,000 miles on an '07. 5 6. 7 cab and chassis.

First things first, EB's 6. 7 is not a 07. 5 6. 7, and is a lot more reliable, and has the Aisin automatic, it is an 07MY C&C bought in 06. There is no such thing as a 07. 5 C&C. There are some differences between his and mine, that was built in Feb 07, (look at sig) the cosmetic cover over the EGR bypass tube and the EB was not included with the engine, but could be turned on for a fee. But overall the engine is the same as mine and the C&C's have a different emissions setup. The C&C's are also rated at 305HP unlike the 07. 5 6. 7/46rfe with the 350HP. The C&C's did not meet the 2010 emissions in 07 like the 07. 5 6. 7 did.



I would not buy a used 07. 5 6. 7 unless the emissions have a warranty that has at least a one year 12K mile (1/12) warranty included with the truck. There were many buybacks and many problems associated with the early 6. 7's except for the C&C 6. 7, that had different emissions controls. The potential of the truck the OP is looking at, can be a good truck, but a Carfax needs to be ordered on it, to see what/if it had emission issues or was a buy back truck. As Bob4x4 states, they have a higher risk than the 5. 9, but a newer model from 09 and on, has a better chance of emission free issues.



The 6. 7 with the 46rfe Auto is a good combination rather than the 6. 7/G56, it pains me to say that, but the history on the the 46rfe has been good and has done well with the 350HP. Mine with the C&C 6. 7/G56, has had an issue, but not until after the ECM was updated. It was my fault though, I was given the choice on the update, if I wanted the new update in 09. I now have surging issues when in regen when rowing through the gears and it has taken out my clutch. Its now going to cost me a couple grand to beef up the clutch and trany to counter the regen and surging issues when shifting at RPM's higher than 1900 RPM.

 

[Bob V]

I traded my 2005 manual for a 2011 automatic and very happy with the new truck, I bought it used with 64,000 miles on it so I got it at a good price. I did do the PDF, CAT, EGR deletes with a Smarty JR and have plenty of power and about the same MPG as both my '97 and '05. Highway MPG might be a little better and city is a little worse. Personally if I was going to get a 6. 7 I would get a 2010 or newer, just a better truck with a true crew cab, heavier front axle, and MUCH better interior.

 

[Barry]

I sure hate to see you post that about the 2010... ... ... I just passed on a 2010 2500 with 29K on the clock for $31K from one of my dealer's. It was BNIB. Never had a hitch installed. But with the economy such that it is, I just did not want to go in debt.

 

[RVTRKN]

I agree the newer truck is better, but wow, what a price tag!

 

[HBarlow]

First things first, EB's 6. 7 is not a 07. 5 6. 7, and is a lot more reliable, and has the Aisin automatic, it is an 07MY C&C bought in 06. There is no such thing as a 07. 5 C&C. There are some differences between his and mine, that was built in Feb 07, (look at sig) the cosmetic cover over the EGR bypass tube and the EB was not included with the engine, but could be turned on for a fee. But overall the engine is the same as mine and the C&C's have a different emissions setup. The C&C's are also rated at 305HP unlike the 07. 5 6. 7/46rfe with the 350HP. The C&C's did not meet the 2010 emissions in 07 like the 07. 5 6. 7 did.

I would not buy a used 07. 5 6. 7 unless the emissions have a warranty that has at least a one year 12K mile (1/12) warranty included with the truck. There were many buybacks and many problems associated with the early 6. 7's except for the C&C 6. 7, that had different emissions controls. The potential of the truck the OP is looking at, can be a good truck, but a Carfax needs to be ordered on it, to see what/if it had emission issues or was a buy back truck. As Bob4x4 states, they have a higher risk than the 5. 9, but a newer model from 09 and on, has a better chance of emission free issues.

The 6. 7 with the 46rfe Auto is a good combination rather than the 6. 7/G56, it pains me to say that, but the history on the the 46rfe has been good and has done well with the 350HP. Mine with the C&C 6. 7/G56, has had an issue, but not until after the ECM was updated. It was my fault though, I was given the choice on the update, if I wanted the new update in 09. I now have surging issues when in regen when rowing through the gears and it has taken out my clutch. Its now going to cost me a couple grand to beef up the clutch and trany to counter the regen and surging issues when shifting at RPM's higher than 1900 RPM.

What does this have to do with the op's question?

 

[RVTRKN]

Your comparing apples to oranges, with a less restrictive emissions and a more reliable engine, to the 07. 5 6. 7. The reg truck 6. 7 had a lot of problems when the C&C's did not. So to make a statement about yours and EB's trucks not having any problems, misleads the OP into thinking the 07. 5 trucks were reliable when they are suspect, especially not until Cummins made some changes in the 09 MY. Add into the factor its used, how many posts have you read were the owner traded in the 07. 5 trucks when the dealer could not fix them.

 

[Bob4x4]

Your comparing apples to oranges, with a less restrictive emissions and a more reliable engine, to the 07. 5 6. 7. The reg truck 6. 7 had a lot of problems when the C&C's did not. So to make a statement about yours and EB's trucks not having any problems, misleads the OP into thinking the 07. 5 trucks were reliable when they are suspect, especially not until Cummins made some changes in the 09 MY. Add into the factor its used, how many posts have you read were the owner traded in the 07. 5 trucks when the dealer could not fix them.

Yup and most 07's are out of warranty... ... ... .....

 

[Barry]

Hey Herb, buy an '09 or newer... ... ... ... ... .

 

[HBarlow]

Your comparing apples to oranges, with a less restrictive emissions and a more reliable engine, to the 07. 5 6. 7. The reg truck 6. 7 had a lot of problems when the C&C's did not. So to make a statement about yours and EB's trucks not having any problems, misleads the OP into thinking the 07. 5 trucks were reliable when they are suspect, especially not until Cummins made some changes in the 09 MY. Add into the factor its used, how many posts have you read were the owner traded in the 07. 5 trucks when the dealer could not fix them.

Lots of nonsense.

TulsaOkie's truck was an ordinary 6. 7 pickup and served him well for about 400k miles. He put a rebuilt automatic in it not long before he traded or sold it but reported no other problems with his '07. 5.

You have less miles and less knowledge of the trucks than anyone else here and are preaching things you know little about.

 

[RVTRKN]

Not all early trucks had issues, but I wouldn't gamble on buying a buyback, or a troublesome 6. 7, thats why I recommended a Carfax for the truck in question, even then I wouldn't buy it. As usual you just can't stand it when someone points out your stupidity, your so into being the know it all, it blinds you when your wrong. Its not the first time nor will it be the last time you will be wrong. Yup, your right you have more miles than me, so whats your point? The miles seem to be wearing on your intelligence, if you think a reliable C&C truck can be compared to a 07. 5 thru 08 6. 7 truck.

 

[GCP]

I recently upgraded to a 2009 6. 7L that I found with only 20,095 miles on it. The engine is outstanding - lots of power. The new 6 speed transmission is another huge bonus. So far the truck has handled every tasking I've put it through with ease. After doing a lot of research, I decided that a 2009 and newer was the way to go. You won't be sorry, but if I were you I'd keep that ole 12V for posterity's sake!

 

[HBarlow]

I know of only one '07. 5 or '08 that was a buyback. A TDR member who honestly reported that his truck was only used for slow speed short trips because of circumstances of where he lived and worked sold his back to Chrysler under OR's lemon law two or more years ago. There have been other complaints posted here but that is the only one I am aware of that was ever actually a buy back. Some of the complaints have been from owners who have modified their trucks then tried to blame Ram or Cummins when their engines were trashed.

Cummins/Chrysler developed computer reflashes for the early 6. 7s and those that actually had smog problems received new dpfs, egrs, or turbos under warranty. It is my understanding that the reflash on '07. 5s and '08s made them the same as '09s and '10s which have had few reported problems. I haven't read a report of a smog issue with any 6. 7 in a long time.

Member Eric just reported having his '09 break down on the highway and having it towed to a dealer. We haven't heard a diagnosis yet.

Anyone considering a used late 5. 9 or 6. 7 should have it examined by a competent dealer service department to determine if there was evidence of a magic black box being installed by a previous owner or a buy back.

I'd like to see links to all the failures and buybacks alluded to in an earlier post.