Any opinion on the 6.7 engine?

[HBarlow]

Nick,

Your analysis is a good one.

 

[AHarris]

Seaman Recruit Barlow, you are DISMISSED!

 

[Wygate]

Seaman Recruit Barlow, you are DISMISSED!

Wow it has been better than 20 years since I have heard that one!!!!!
Was that because he didn't square it?
Brought a smile to my grumpy old face to hear stuff like that again.

 

[HerbW]

Guys,
Let's not argue about opinions. I'm wondering now if I should be looking at an 04 thru 06 year trucks or keep my 98 with only 130K miles on it. I've looked at a 2009 with every bell and whistle created and all looks great except 178 thousand miles on it. Suppose to run like a 20k mile rig. Think that is too many for an 09? Has to be a highway rig. It looks new everywhere. Thanks for all opinions. Herb

 

[GCP]

Guys,

Let's not argue about opinions. I'm wondering now if I should be looking at an 04 thru 06 year trucks or keep my 98 with only 130K miles on it. I've looked at a 2009 with every bell and whistle created and all looks great except 178 thousand miles on it. Suppose to run like a 20k mile rig. Think that is too many for an 09? Has to be a highway rig. It looks new everywhere. Thanks for all opinions. Herb

Herb,



If you decide to buy a newer used truck I would look into an '09 (or newer if you can afford it) with low miles and only one owner. I spent several months researching '07. 5 - 12 trucks and narrowed it down to '09 and newer. With some time, patience, and persistence you will find a truck that has the features you want with the miles you can afford, plus you can utilize the remainder of the warranty. Once I knew what trucks I was looking for I spent a couple months waiting and searching eBay, Auto Trader, and the local dealer lots. Eventually, I found exactly what I was looking for from a gentleman selling his '09 (see signature) on eBay. Greatest decision I've made. This 6. 7L blows my old 5. 9L out of the water in all areas except fuel economy. If you want a newer, more powerful, and yes, reliable truck, don't hesitate to jump into a 6. 7L. I stress the importance of one, a low mileage and a single owner, because several owners in either a high or low mileage truck could indicate a recurring problem; two, if you find a truck with about 67,000 miles or more insist on verifying the EGR service has indeed been completed. Best of luck. If you have any specific questions feel free to PM me.

 

[AHarris]

B-Block, Dowel pin, lift pump, injector pump and the various others I have forgot about on earlier CTD. Earlier 6. 7 HAVE HAD ISSUES, you can bury your head in the sand if you want to. Why don't you warranty all used 07. 5 trucks that are purchased from this day on, if your so convinced they are a good investment. And now your claiming that it was owner related failures. Your words!

Early 6. 7s did have problems which was I was nervous about buying one. I learned about the 6. 7 problems reading this forum. But my previous 07. 5 was a great truck that I didn't have any problems with. I drove it like a car for most of the time I had it and never had a problem. Never a CEL or any other issue. My '10 has been completely trouble free.



If it were me, I'd take any 6. 7 out there... just make sure the ECM flashes and TSBs are up to date.

 

[AHarris]

Herb,



If you decide to buy a newer used truck I would look into an '09 (or newer if you can afford it) with low miles and only one owner. I spent several months researching '07. 5 - 12 trucks and narrowed it down to '09 and newer. With some time, patience, and persistence you will find a truck that has the features you want with the miles you can afford, plus you can utilize the remainder of the warranty. Once I knew what trucks I was looking for I spent a couple months waiting and searching eBay, Auto Trader, and the local dealer lots. Eventually, I found exactly what I was looking for from a gentleman selling his '09 (see signature) on eBay. Greatest decision I've made. This 6. 7L blows my old 5. 9L out of the water in all areas except fuel economy. If you want a newer, more powerful, and yes, reliable truck, don't hesitate to jump into a 6. 7L. I stress the importance of one, a low mileage and a single owner, because several owners in either a high or low mileage truck could indicate a recurring problem; two, if you find a truck with about 67,000 miles or more insist on verifying the EGR service has indeed been completed. Best of luck. If you have any specific questions feel free to PM me.

Very good point about "several owners" in a truck (especially a low mileage one) and the EGR service. In most cases, though, I think you're ok with a 07 or 08 6. 7 as long as all flashes are done and there's good service records at the dealer. No service records, keep walking.



I drove an '07. 5 6. 7 for 40K miles and 3 years, as a grocery getter most of the time, with NOT A SINGLE CEL or problem. I was (and still am) religious about maintenance.

 

[HBarlow]

Let us know how well that adolescent "dismissed" routine works for you airman yooper.

 

[RVTRKN]

AHarris, I'm glad your 07. 5 was trouble free, it was sad to see the old 5. 9 go, but with the emissions on the CTD, they had to eliminate the smaller cubic inch engine. It kind of reminds me of the early smog pumps that were installed on gassers in the 70's. The auto industry at that time, just increased the size of the engine to maintain the same HP, that was lost on the early emissions. The 6. 7 is basically a 5. 9, just bored and stroked to increase the cubic inches. But they did have issues with the first versions of software and turbo's that keep the DPF clean. THEY DID HAVE PROBLEMS, and if you had one without issues that was good. I don't know what the ratio is between the C&C and reg. pickups, pertaining to emission problems, if any at all. I know my reflash of the ECM in 09 screwed up my C&C, that was trouble free until then. They seem to have increased the frequency of regen's by setting it on a mileage basis as well as when the DPF sensors detect its getting full. I never knew it was in regen until 09, now I have to drive it slow and keep the shifts below 2000 RPM when in regen when in city driving, and is a challenge to drive when at 22 GCVW. Its what took my clutch out at only 42K miles, and will cost me a couple of grand to make it right again. So a statement like "the 6. 7 is a trouble free engine" is bogus.

 

[Barry]

About 15 years ago I was at an auction in Waco, Texas buying some cars and trucks for my dealership. As wise old rancher was there and he gave me this warning: "If it has tits or tires on it, sooner or later, it's gonna give you trouble. "

I have never forgotten that... ... ... ... ... ... ... .....

 

[Bob4x4]

The engineis trouble free the controls not perfect but much improved

 

[HBarlow]

AHarris, I'm glad your 07. 5 was trouble free, it was sad to see the old 5. 9 go, but with the emissions on the CTD, they had to eliminate the smaller cubic inch engine. It kind of reminds me of the early smog pumps that were installed on gassers in the 70's. The auto industry at that time, just increased the size of the engine to maintain the same HP, that was lost on the early emissions. The 6. 7 is basically a 5. 9, just bored and stroked to increase the cubic inches. But they did have issues with the first versions of software and turbo's that keep the DPF clean. THEY DID HAVE PROBLEMS, and if you had one without issues that was good. I don't know what the ratio is between the C&C and reg. pickups, pertaining to emission problems, if any at all. I know my reflash of the ECM in 09 screwed up my C&C, that was trouble free until then. They seem to have increased the frequency of regen's by setting it on a mileage basis as well as when the DPF sensors detect its getting full. I never knew it was in regen until 09, now I have to drive it slow and keep the shifts below 2000 RPM when in regen when in city driving, and is a challenge to drive when at 22 GCVW. Its what took my clutch out at only 42K miles, and will cost me a couple of grand to make it right again. So a statement like "the 6. 7 is a trouble free engine" is bogus.

Mine has been troublefree as have many pickups. Yours may be junk but that's your problem.

 

[RVTRKN]

WTF HBarlow, I mean, SUPER CTD MAN, I thought all CTD's are the best thing known to mankind.



My junk is just fine at the moment, and will be stronger than your Junk when I'm finished, so take your pissy 2 wheel drive and stick it up your ash.

 

[AClayton]

This is better than the Comics page in the paper!

 

[RVTRKN]

:-laf:-laf:-laf:-laf:-laf:-laf:-laf:-laf:-laf:-laf Ya, opinions

 

[cerberusiam]

At stock power and a bit more the 6. 7 has proven to be reliable enough, once all the glitches in the early controls have been ironed out. However, it is far from being what the 5. 9 was for reliability at increased power levels. In part that is due to the controls imposed by the platform and the EPA, but, the design has issues when pushed out of its comfort zone.

Version 1. 0 of about any software is going to show some issues, testing will normally only cover 75-80% of actual scenarios. Once it is relased to the general population they WILL find others that need addressed. Doesn't change the fact the first 1. 5 year production run had\has problems that may have NOT been fixed.

 

[SierraRam]

I feel the brotherly love coming out in this thread... .....

 

[RVTRKN]

At stock power and a bit more the 6. 7 has proven to be reliable enough, once all the glitches in the early controls have been ironed out. However, it is far from being what the 5. 9 was for reliability at increased power levels. In part that is due to the controls imposed by the platform and the EPA, but, the design has issues when pushed out of its comfort zone.



Version 1. 0 of about any software is going to show some issues, testing will normally only cover 75-80% of actual scenarios. Once it is relased to the general population they WILL find others that need addressed. Doesn't change the fact the first 1. 5 year production run had\has problems that may have NOT been fixed.

Did you clear that statement through HBarlow?

 

[AEdelheit]

Did you clear that statement through HBarlow?

haha, that ignorant old man knows everything, just ask him!! Every 6. 7 problem is the owners fault and in no way Cummins/Dodge/Fiat/DPF/EGR/CARB/EPA/Calis fault, duh, get with the program!

Ive delt with a lot of 6. 7's and for the longest time was a die hard 5. 9 guy, they are changing my opinion though. The VGT and 6spd auto (68RFE or Asain) are proving them selves well. I would not buy a 6. 7 out of warranty because of the emissions components unless you plan on deleting it. At some point they will need to be replaced at a hearty price, no way around it. All the trouble free ones Ive seen got worked hard, an early 6. 7 used as a Grocery getter or a real low mileage one would raise a red flag for me, but I would buy a new 4th gen without concern.

Now for the old grumpy grandpas rebutle, GO:

 

[AHarris]

At stock power and a bit more the 6. 7 has proven to be reliable enough, once all the glitches in the early controls have been ironed out. However, it is far from being what the 5. 9 was for reliability at increased power levels. In part that is due to the controls imposed by the platform and the EPA, but, the design has issues when pushed out of its comfort zone.

Version 1. 0 of about any software is going to show some issues, testing will normally only cover 75-80% of actual scenarios. Once it is relased to the general population they WILL find others that need addressed. Doesn't change the fact the first 1. 5 year production run had\has problems that may have NOT been fixed.

This is the most accurate statement IMHO. I've been lucky with my two 6. 7s but not everyone else has been. From my reading, the 6. 7 is on its way to proving itself the equal of the legendary 5. 9L. I tried to get the last of the 5. 9s but the damn dealer put the order in a little too late back in 2006 when I tried to get a 5. 9L Mega Cab 4 X 4 built for me with the 48RE. They came back months later and said "sorry, dude, you'll have to take the 6. 7. "

I ended up cancelling the order altogether and getting a killer deal on a 07. 5 QC 3500 4 X 4 with a 6. 7 (built in May 2007) and a G56. Drove that one for 3 years and then got the 2010 crew cab which is my current truck. ZERO problems.

Both have been bulletproof for me. I wish I had the simplicity of the 5. 9 and the fuel economy, but 110K miles behind the 6. 7 since 2007 has made me a believer in the reliability of this engine. Take care of it and it will take care of you and your results may vary. I've been lucky with both of mine.