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Old 07-12-2019, 05:57 PM   #11
autostaretx
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Default Re: Towing, No Power LHM.

From the symptoms, i'd vote for a (slight) leak in the air plumbing between the turbo charger(s) and the intake manifolds.
It can be as simple as a (ever so slightly) split hose ... which doesn't kick into being a "visible" problem until you exceed a certain pressure in the plumbing.
(mine used to drop out at 27 psi, whereas it should be able to reach over 32 psi). At 65 mph "on the flat".
Once you turn off the engine, the fault resets, and you can drive off again ... until you exceed the trip-pressure.

Gadgets like a ScanGauge let you monitor that "manifold absolute pressure" as you're driving.

If the Sprinter notices the leak, it will cease even trying to use the turbo ... which removes half the power of the engine.
(it becomes "normally aspirated" instead of "turbo charged" ... with less air it has to burn less fuel hence less power).

Look around the engine compartment for traces of oil splattered upon the panels, other hoses, whatever ... the turbo air stream has some entrapped oil in it (that's normal), and the splatter can help locate the actual leak point that sprayed it there.

--dick
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Old 07-13-2019, 01:14 AM   #12
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Default Re: Towing, No Power LHM.

Quote:
Originally Posted by Moto Vita View Post
Maybe you can explain your idea of "better" for us? 188 hp with a 5 speed doesn't compare well to a 400 hp with a 6 speed for towing in my book.

BTW my Sprinter gets about 12 mpg pulling a 3500# trailer.
We are talking about class C RV Chassis......so 400 HP is off the table.
My idea of better........
The Ford Chassis gas V10 I owned were in the 4-8 MPG towing a 4000#
My Sprinter consistently gets 13.5-15 MPG with the same trailer.

Next we can talk about handling, road feel, steering slop and wonder of the Ford Chassis is another thread.
Then transition to road and engine noise while trying to pull that trailer and maintain speed.

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Last edited by showkey; 07-13-2019 at 01:20 AM.
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Old 07-13-2019, 06:36 PM   #13
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Default Re: Towing, No Power LHM.

The GM 2500HD with the 6.6 turbodiesel has 445 horsepower, 910 pound-feet of torque, a 10-speed transmission, and a max trailer tow weight rating of 18,500 pounds, and that's just a single rear wheel 3/4 ton pickup. The 3500HD duallie can tow up to 35,500 pounds.

Last edited by The Grand Tour; 07-13-2019 at 06:40 PM.
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Old 07-13-2019, 08:47 PM   #14
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Default Re: Towing, No Power LHM.

Quote:
Originally Posted by The Grand Tour View Post
The GM 2500HD with the 6.6 turbodiesel has 445 horsepower, 910 pound-feet of torque, a 10-speed transmission, and a max trailer tow weight rating of 18,500 pounds, and that's just a single rear wheel 3/4 ton pickup. The 3500HD duallie can tow up to 35,500 pounds.
So......Clearly you DO NOT own a Sprinter. It really does explain so much.
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Old 07-13-2019, 10:53 PM   #15
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Default Re: Towing, No Power LHM.

Nothing I could add to the technical discussion, but we tow a 3800# RAV4 and have towed it all over the Country and lots of Canada. Towing mileage is now about 40,000 miles and it is 2016 Sprinter 3500 with a fiberglass LTV Serenity motorhome built on it. We have none of the problems you describe. There have been a few times where I noticed our speed was 80 MPH on the Interstate (not really intentional, but caught in traffic... and they were still passing us). I would say there is definitely something wrong with your unit. Fuel filter ever been changed? How about the engine air cleaner?
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Old 07-14-2019, 12:42 PM   #16
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Default Re: Towing, No Power LHM.

Quote:
Originally Posted by The Grand Tour View Post
The GM 2500HD with the 6.6 turbodiesel has 445 horsepower, 910 pound-feet of torque, a 10-speed transmission, and a max trailer tow weight rating of 18,500 pounds, and that's just a single rear wheel 3/4 ton pickup. The 3500HD duallie can tow up to 35,500 pounds.
That’s really nice.......perfect rig for towing a huge Air Stream travel trailer .........but........Has absolutely nothing to do with the OP Sprinter issue and Class C RV.
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Last edited by showkey; 07-14-2019 at 12:56 PM.
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Old 07-15-2019, 03:56 PM   #17
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Default Re: Towing, No Power LHM.

Quote:
Originally Posted by trollkey View Post
Thatís really nice.......perfect rig for towing a huge Air Stream travel trailer...
Yes. It'll tow just about anything better than a 188-horsepower Sprinter.
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Old 07-15-2019, 06:54 PM   #18
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Default Re: Towing, No Power LHM.

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Originally Posted by The Grand Tour View Post
Yes. It'll tow just about anything better than a 188-horsepower Sprinter.
Maybe that is why you don't own a Sprinter. Not that it stops you from thinking you are an expert on them.
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