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.

 

Is it bone stock ? What gears are you running ? Give us some more info .

 

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.

 

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.

 

Are you sure you don't have fuel supply issue like a dirty filter?

 

I'll agree with keeping it over 2200 rpms to maintain power, but I've never had any turbo stall under similar conditions.

 

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.

 

Here is the link for the turbo surge.
YouTube - 1999 Ford F350 7.3 Compressor Surge

 

Thanks Deven I couldn't find one.

 

Not a problem that is what I used to figure mine out.

 

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.

 

As Dave mentioned, the wicked wheel is the cheapest fix for that.

 

Another vote for the WW to cure the surge.

 

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.

 

Jason, if ya need some help let me know, I've done a few WW. We have a shop to work in on Franklin & Cloverdale in Meridian.