6.7L Ford Issues...... Round TWO???

[HBarlow]

I didn't quote or pretend to quote you on anything. Where did you get that?

You've already searched online and realized you cannot refute my claims so you want me to prove a negative. Let's see your proof that the Trailblazer is actually a GM design. Being assembled in a GM plant proves nothing - exactly like the GM Isuzu V8 diesel engine. GM dealers and owners make vague claims about it being a joint venture or GM built it but the fact is that GM couldn't design and build a light truck diesel engine until Isuzu got involved.

 

[AEdelheit]

Hahhahahahhaah classic Harvey destroying another perfectly good thread

 

[Yo Hoot]

I didn't quote or pretend to quote you on anything. Where did you get that?

You've already searched online and realized you cannot refute my claims so you want me to prove a negative. Let's see your proof that the Trailblazer is actually a GM design. Being assembled in a GM plant proves nothing - exactly like the GM Isuzu V8 diesel engine. GM dealers and owners make vague claims about it being a joint venture or GM built it but the fact is that GM couldn't design and build a light truck diesel engine until Isuzu got involved.

Big difference. The GM/Isuzu joint venture that designed and built the Duramax was fully disclosed from the onset. There was no secrecy like you are implying with GMT360. Do you really think GM could have kept that a secret? Are you for real? Do you believe we went to the moon?

BTW I owned one of the first Dmaxes produced and sold. I belonged to a club that went on a field trip to the Moraine Ohio engine assy plant. We were the very first "civilians" to view the factory first hand. Met many of the engineers there. Take a guess what the hourly rate for the assy line workers was... We left there and went to the AM General plant in Franklin to see the 6. 5L TD assembly.
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This is a scan of the Moraine OH newspaper that covered the event. (2002). In the picture my truck is the white one farther back and that's me talking to an engineer. . showing him the propane injection system. This picture was taken in front of the Dmax plant before we took the tour. The truck in the foreground is the "famous" Pikes Peak demonstrator truck.

Try and outbrag me... . LOL

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This is what happens to an overpowered Dmax. .
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And my Dmax getting head gaskets! Love them Japanese engineers!
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All in all the Dmax has been a huge success for GM and yes, GM was unable to design a good diesel themselves.

Gotta love that AMERICAN Allison 1000 transmission. That is a sweet box.

 

[JUeckert]

I have allways wondered if the duramax plant took over the 6. 5 plant, considering it was built in moraine also. . Know any info on that? To keep on topic , at 13 months old my 6. 7 ford is still doing great. .

 

[Yo Hoot]

GM hasn't been involved in the 6. 5TD since the late 90's. AM General's General Equipment Products builds the engine still. That was the case back then when we visited the AM General plant in Franklin OH. It's the engine used in the H1 Hummers.

Here is the website. . General Engine Products | AM General LLC - Mobility solutions for the 21st Century

General Engine Products begins production of diesel engines.

In 1999, AM General incorporated a wholly owned subsidiary, General Engine Products LLC (GEP), and constructed a new plant in Franklin, Ohio to build 6. 5-liter diesel engines. GEP supplies service engines to General Motor's Service Parts Operation (SPO) and builds engines for AM General's use, as well as for other customers.

 

[rbattelle]

Yo Hoot, when you say, "love them Japanese engineers", were you being sarcastic? I'm not baiting you, I just wonder if you're referencing some unfortunate aspect of the DMAX design.

-Ryan

 

[Yo Hoot]

Yo Hoot, when you say, "love them Japanese engineers", were you being sarcastic? I'm not baiting you, I just wonder if you're referencing some unfortunate aspect of the DMAX design.

-Ryan

I was only pointing out that even the Japanese products aren't perfect. With the Dmax, the first two years could be a costly investment if warranty didn't help you out. And who wants to have to use warranty anyway?

The busted block was showing the limits of the block. I think at the time over 600hp was getting close to overstressing. I heard they beefed up the block but I don't know if that helped. It's a tough engine for sure though. I like the engine and trans but the truck is ugly and sits too low for me LOL

Do you know Michael Tomac? He put the Dmax on the map pretty much whipping everybody at the big pulls with his Dmax.

 

[HBarlow]

I remember the video we had a good laugh over with the guy with the duradud/allison dog with the major overheating problem and GM's refusal to do anything under warranty for a new truck that ran with the temp gauge pegged at 240* when towing a load in summer heat on I-10 in Texas. He had full instrumentation and a video camera recording details and conditions. He was running with his foot to the floor on the hills and couldn't keep up with an old guy like me in a 12 valve Dodge pulling his fifthwheel along I-10 minding his own business.

Yessir, those Govt. Motors/Japanese V8 diesels are the power plant to have.

 

[Yo Hoot]

I think that was an 05 issue.

 

[Wingate]

I have allways wondered if the duramax plant took over the 6. 5 plant, considering it was built in moraine also. . Know any info on that? To keep on topic , at 13 months old my 6. 7 ford is still doing great. .

Good to hear your truck is still doing great... my friends 3/4 ton has had no futhur issues since the turbo failure. He's suppose to haul their camper back from S. Texas soon, I think hes gonna try locking it out of 6th gear and see if fuel mileage gets any better...

Yours is a dually, 4x4 or 2x4??? Which rear gear does it have??

We are having issues with the window washer tubing and hood inserts melting off... there is tons of heat and all that "stuff" is sssooooo close to the hood...

 

[JUeckert]

Mine is a crewcab 4x4, 3. 73's and of course the dogamatic. . I really figured i was gonna regret having to go auto, but i have to admit i'am very pleased with the performance and reliability so far. .

 

[JUeckert]

I remember the video we had a good laugh over with the guy with the duradud/allison dog with the major overheating problem and GM's refusal to do anything under warranty for a new truck that ran with the temp gauge pegged at 240* when towing a load in summer heat on I-10 in Texas. He had full instrumentation and a video camera recording details and conditions. He was running with his foot to the floor on the hills and couldn't keep up with an old guy like me in a 12 valve Dodge pulling his fifthwheel along I-10 minding his own business.



Yessir, those Govt. Motors/Japanese V8 diesels are the power plant to have.

I remember that video, i also remember gm having those issues in 05'. I ruled both ford and gm out that year, and settled on a dodge. . Low and behold, my normal loads and driveing could get that thing up to 210* in 90* degree temps. . If i drove it sure enough hard, it would go higher then that. . Even with modest loads the egt's had to be monitored. . One of the biggest reasons i traded it...

 

[Yo Hoot]

You saying your Dodge overheated?

 

[HBarlow]

You saying your Dodge overheated?

Nope, sure not. I've never seen a Dodge overheat.

It was a Duradud.

 

[Wingate]

Mine is a crewcab 4x4, 3. 73's and of course the dogamatic. . I really figured i was gonna regret having to go auto, but i have to admit i'am very pleased with the performance and reliability so far. .

My buddys 3/4 ton is a 4x4. . and it will run a hole in the wind unloaded. . and running unloaded it does about 15-17 mpg. . he loves it, other than the fuel mileage when towing. So far, he hasn't had the transmission issues that were so prominient on the 11 models. He's had to have a couple of software updates and the same DEF pump replacement that my 11 model C&C had...

Was yours one of the defective DEF pumps and/or NOX sensor?? Not sure if you will get a letter about replacement, or if Ford is just replacing them as they fail... You WILL know if either fails... the fuel mileage REALLY goes to crap and sometimes it will go into derate mode!!!!.

The auto trans. overall seems to be managed well enough to not allow you to hurt it. . not sure how it acts in a pickup, but in the C&C trucks, you will NEVER get very much IMAP unless the convertor is completely locked up for a couple of seconds... . ITs crappy for driving, but its effective transmission management.

 

[JUeckert]

Not a single issue with the truck, and overall very pleased with it. . The only pet peve i have with it, the transmission will down shift to first in a low speed situation such as parking lots or rolling through stop signs at about 5mph. . It really has no need to do this in my book, even with a light trailer hooked up. . When i got the inspection redone back in april, gene informed me of the nox sensor recall, sure enough i got a recall notice about a week after. Havent taken it in yet to get it replaced. .

 

[JUeckert]

You saying your Dodge overheated?

Never boiled it over, but under the correct conditions pushed hard enough i firmly believe it could have been done. . With what i consider routine loads,temps and terrain, i could easily get it to the 210*. . The truck and engine had no issues on performance or defective radiator or other prob. It was simply a result of being able to hit excess egts , quite easily. . I havent witnessed this issue on 04' or earlier common rails, just late 04's and 05's. . I'am told by those who have done so, the solution was a different turbo. . My solution was to just stay out of the fuel. . The only diesel pickups i have had issue with on outright overheating were my first gen's, especially the two with auto's. . Dodge simply didnt put enough radiator in them. .

 

[AEdelheit]

I don't see why you guys think 210 is a problem especially when towing

 

[AH64ID]

I don't see why you guys think 210 is a problem especially when towing

Agreed, 03-09 thermostats aren't full open until 207°, and 10+ are full open at about 215°.

 

[Wingate]

The Fords dont even have a gage with numbers on it... just a blue line and a red line with a big gap between them!!. I can tell ya that we have had several of them puke some coolant out on hot days when running down the road. The fan strategy doesnt seem to come on gradually, its full clutch off, then when the temps get up almost to the red line, all at once the fan goes to full clutch lock. ! But, thers no way of knowing what temp that is due to the absence of #s on the gage. .

yeah. . i deem 210 normal operating temp. . Im not sure how accurate these gage panels really are. . Ive seen 235-240 out of some engines working hard for hours on end. As long as the pressure is up on the system and the inlet air temps are controlled... let her eat!!