Turbo sputters @ 7% grade - empty
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Cargo Master
Joined: Oct 2008
Posts: 3,330
Likes: 13
From: Eaton, CO
Turbo sputters @ 7% grade - empty
We drove through the mountains for about 400 miles and the truck cannot maintain 65mph in 6th gear going up a 7% grade with zero load. The turbo started this rhythmic wiffing/sputtering until I let off the skinny pedal. It would start doing it at 60mph at 7% grade in 6th gear. Anything below 60mph and it was good.
I'm a bit disappointed because our '04 Cummins would rampage up those hills accelerating more at 75mph with an old, steel 4 horse stock trailer.
What is the turbo doing when this happens? Any idea how to make this thing move up a friggin' hill without sputtering out? We're going to go put a 3-4 horse slant bumper pull on the back of this pig today to pick up one horse and one ton of alfalfa. The rig better pull this nothing of a load effortlessly.
I'm a bit disappointed because our '04 Cummins would rampage up those hills accelerating more at 75mph with an old, steel 4 horse stock trailer.
What is the turbo doing when this happens? Any idea how to make this thing move up a friggin' hill without sputtering out? We're going to go put a 3-4 horse slant bumper pull on the back of this pig today to pick up one horse and one ton of alfalfa. The rig better pull this nothing of a load effortlessly.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Do you have a chip or tuner? Any other mods? I can't see you having turbo surge at that low of an RPM stock. Someone here has a clip of turbo surge. We need to find it to see if we're talking about the same sound.
Elder User
Joined: Nov 2005
Posts: 796
Likes: 0
From: North Idaho
That is exactly what mine did. Between 60-65 mph was a hard speed to maintain on a grade because of turbo stall. Over 70 mph and below 60 mph I had no problem. When I was empty I could do over 70mph but with a loaded trailer I had to slow down and down shift to avoid the turbo stall. I put an Aero Turbine muffler on when I did my exhaust and the turbo stall is almost completely gone. Keep the rpms over 2200 and you should be able to pull whatever you want.
Cargo Master
Joined: Apr 2004
Posts: 3,162
Likes: 1
From: Vilonia Arkansas
Mine would surge bad between 60 -65 pulling a grade with no load when we put my chip in but a WW solved that. I have 4:10 gears he may also.
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Elder User
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Elder User
Joined: Nov 2005
Posts: 796
Likes: 0
From: North Idaho
I had an Areo Turbine laying around for about 2 years because I picked it up cheap. I read all the info and figured it can't hurt. So when I did my exhaust last fall I put it on and so far have been impressed. The biggest thing was when I had the cruise set to 67 mph pulling a 5.5% grade the turbo stall was almost completely gone. I get some stall when towing heavy, but it is much easier to work around it now.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
I never noticed stall until installed a 6637 and I took my stock muffler off. It would start at 1800 and continue until about 2100 rpms. On a 5% grade I would actually lose speed unless I could floor it and get over 70 mph or have to drop a gear and slow down. Dropping out of sixth gear at 60 mph ran about 2600 rpms
I had an Areo Turbine laying around for about 2 years because I picked it up cheap. I read all the info and figured it can't hurt. So when I did my exhaust last fall I put it on and so far have been impressed. The biggest thing was when I had the cruise set to 67 mph pulling a 5.5% grade the turbo stall was almost completely gone. I get some stall when towing heavy, but it is much easier to work around it now.
I had an Areo Turbine laying around for about 2 years because I picked it up cheap. I read all the info and figured it can't hurt. So when I did my exhaust last fall I put it on and so far have been impressed. The biggest thing was when I had the cruise set to 67 mph pulling a 5.5% grade the turbo stall was almost completely gone. I get some stall when towing heavy, but it is much easier to work around it now.
Elder User
Joined: Jul 2006
Posts: 530
Likes: 0
From: Vancouver, Washington
Waiting on my WW in the mail to cure my surge. Want to fully enjoy my 80 two DP setting on a trip to Idaho in May and am confident that it will cure any problems. By the way, nice avitar 1996pwrstrk.
