New to this site, so this may have already been posted. Purchased new LLY Duramax 3 weeks ago. After 1 week, had a whistling noise under acceleration. Took to dealer, diesel mechanic on vacation. 2nd week hissing noise is now added to whistling noise, again under acceleration. Took to dealer, diesel mechanic no longer works for them, check back next week.
Problem escalated while on trip to south Texas. Loud sound, like tire blow out, and black smoke billowing out of exhaust, immediate loss of power. Figured truck on fire, got cell phone and cold drink out of holder ( in case I had to sit on side of road under tree), popped hood. Blue hose from intercooler to turbo had blown off. Limped into nearest dealer and got it fixed.
Anyone heard of a TSB on this problem? Would like to go to local dealer and paste it on his forehead!

Thanks,
Rick

I recommend stapling it to his forehead. Much more effective at getting the point across.

naah, just beat him with it.


Where the h377 is Keene Texas?

Found it.


Well, I'm down in San Antonio - and HASSELBACH recommended BOSSIER to me for my HVAC issue over in Fairfield. Looks like you're not too far from there.


Call 'em at 1-800 bossier (267-7437).


I know he's been recommended in the past.

Well, Keene is about 3 miles from Egan. http://www.dieselplace.com/forum/smileys/Approve.gif

Seriously, we are located apx 25 miles south of Fort Worth, so I'm sure I can find other dealerships to work on my truck in the future. Just wanted others to know what to expect if their turbo hose came off.

Thanks,
Rick

Thats not the first LLY I have seen/heard off with intercooler hose off...

LLY looks like it has substantially smaller diameter tubes.

Just to straighten me out: This is the pre-intercooler tube? Sounds like that was what he was talking about and seems more likely to 'blow out' than the post-intercooler tube. Wow, that's just plain scary. I can't imagine that happening. . . . I guess I'll just take a peek at mine and make sure everything looks okay.


Thanks,
Dennis

baimpala,

Metal pipe comes from intercooler back to engine on drivers side......blue hose attaches to aluminum intake. I would guess that it's apx 3 inches in diameter.
First dealership reattached hose, lasted for apx 50 miles.
2nd dealership reattached and tried pulling it off.....it came off. Then they cleaned all surfaces with some sort of solvent, and reattached. Has stayed on for 4 days....so far.
Not familiar with medical terms for each part, only had the truck for 3 weeks.
Didn't even know there were different series of duramax's. Learning as I go.

Rick

Metal pipe comes from intercooler back to engine on drivers side......blue hose attaches to aluminum intake. I would guess that it's apx 3 inches in diameter.
First dealership reattached hose, lasted for apx 50 miles.
2nd dealership reattached and tried pulling it off.....it came off. Then they cleaned all surfaces with some sort of solvent, and reattached. Has stayed on for 4 days....so far.
Not familiar with medical terms for each part, only had the truck for 3 weeks.
Didn't even know there were different series of duramax's. Learning as I go.

Rick



You and me, both. Sounds like the pre-intercooler, the other side [obviously, sic.] post-intercooler.


Thanks, sorry it happened to you, that would have froke me out.
Dennis

Pre intercooler or post intercooler makes no difference... the entire path from the exit of the turbo... through the intercooler and into the engine intake has basically the same pressure. You could have a "blowout" at any of the connections if they aren't secure. Ford PSD's are known for doing it.Edited by: hoot

hoot,


I guess I was thinking that the flow might be less 'volatile' coming out of the intercooler, more even. I planned on checking both sides just to be sure.


Thanks,
Dennis

There is very little difference... less than one pound.

Cool, after you said that I thought about it some more and it makes sense, my brain only has an 8-bit bus in it, so I'm a little slow.http://www.dieselplace.com/forum/smileys/Big Smile.gif


Dennis

Pre intercooler or post intercooler makes no difference... the entire path from the exit of the turbo... through the intercooler and into the engine intake has basically the same pressure. You could have a "blowout" at any of the connections if they aren't secure. Ford PSD's are known for doing it.


Hoot, I agree.


My 1987 Grand National Buick suffered the same malady until I upgraded the intercooler hoses and hose clamps.


Melvin Hatcherhttp://www.dieselplace.com/forum/smileys/Hug.gifEdited by: Melvin Hatcher

How do you get an LLY to build enough boost to blow anything off


I have been trying to get it doneEdited by: lly101