|
05-08-2014, 09:07 AM | #1 |
Junior Member
Join Date: Dec 2007
Posts: 91
Likes: 1
Liked 14 Times in 5 Posts
|
Word of CAUTION
Just a word of caution:
I own a 2005 Coachman motorhome on a Feightliner chassis with a 300 HP cummins with 34,000 miles on it. Bought it new. I'm now going on the 4th, yes, number four turbo and 2nd exhaust manifold. From what I'm told, the issue is that this is a mongrel motorhome setup so the turbo and manifold are near impossible to get. I guess the wastegate is part of the turbo with some variable contoller that keeps crapping out. Looking for the manifold has netted nothing, Cummins is contacting the manifold manufacturer to see if they can get/make one. Moral of the story: DON'T buy a 300 CUMMINS on a Freightliner chassis MH around 2004, 2005. POS
__________________
Alias: BIG KAHUNA Last edited by pentastarrail; 05-08-2014 at 09:16 AM. |
05-13-2014, 11:54 AM | #2 |
Junior Member
Join Date: Aug 2011
Location: Central IL
Posts: 80
Likes: 0
Liked 0 Times in 0 Posts
|
Re: Word of CAUTION
ouch! My C7 Cat has been good , knock on wood!
__________________
'66 Chevelle 300 Sedan, 582 BBC |
05-13-2014, 06:41 PM | #3 |
Senior Member
Join Date: Apr 2008
Location: east hartford ct.
Posts: 539
Likes: 0
Liked 9 Times in 3 Posts
|
Re: Word of CAUTION
frank I don't know what the issue is with your coach. you know I had the identical coach to your's. it had 35k on it when I traded it in. I never had a single issue with it? I changed the oil every 7500k miles. and pulled plenty of weight with it. I loved the 300hp cummins I now have a 350hp cummins and I miss the the 10+mpg the 300 would get.
__________________
Mark Markow 171 ss/tb |
05-19-2014, 11:44 PM | #4 |
Junior Member
Join Date: Dec 2007
Posts: 91
Likes: 1
Liked 14 Times in 5 Posts
|
Re: Word of CAUTION
Hi Mark,
I remember your coach, as you said, identical. As we all know, 2 identical engines can be different. From what I'm told by Freightliner, the engine can't make enough power. It basically just cooks itself, hence why the exhaust manifold cracks and the turbo/waste gates go south, excessive heat. The coach is maintained by Freightliner 100% every 4000 - 5000 miles (basically every year), oil, filters, etc. etc. When they read the computer on it they can tell everything from throttle position vs, engine rpm, vs, MPH, egt, etc, etc. The problem is the hills, it starts off in 5th gear (as you would imagine) but drops significantly fast to 2nd or 1st (depending on the hill). The only thing Freightliner could come up with is to chip it BUT they nor anyone else can find anything that works with it since it's a mongrel turbo/waste gate. Believe me I've tried. I know you had a chip in yours, maybe that was the difference, the engine didn't work as hard. Do you know where I can get a chip for mine? Maybe we'll see you at the Grove. Take care, Frank
__________________
Alias: BIG KAHUNA Last edited by pentastarrail; 05-19-2014 at 11:47 PM. |
|
|