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Sep 16, 2009 | 07:44 PM

#11

turbo20psi

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From: MD,NC

Mine gets 19 mpg hand calculated.4.10s 305/70/16s thats the 01.02 gets 22.5 mpg hand calculated 3.55s ,285s ,compounds turbos ,250 hp injectors losts of goodies.I noticed a big different in just a TC and a Valve body in the 01.

Sep 17, 2009 | 07:31 AM

#12

0331grunt

Thread Starter

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Joined: Jul 2009

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From: Webbers Falls, OK

Quote:

Originally Posted by Jet A Fuel

check your fuel filter too

Replaced fuel filter 2 weeks ago with oil change and other fluids. I'm not complainin' about the fuel mileage, but was just expecting more. Its still better than my wife's Tahoe!! When I can, I will look into the VB and TC for tranny and def check on pump/injector asap. Hope to be taking muffler off this weekend as well as silencer ring (just because I can

) If there are any other ideas/thoughts/comments I would appreciate them.

---AutoMerged DoublePost---

Quote:

Originally Posted by Jazz

235,000 mi. Maybe a valve adjustment might be in order too along with the things mentioned previously

Will look into this, too. Thanks.

Last edited by 0331grunt; Sep 17, 2009 at 07:31 AM. Reason: Automerged Doublepost

Sep 17, 2009 | 10:22 AM

#13

01quadcab

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From: Shingletown ca

throw some 2 stroke oil in to help lube everything injectors could be a little full of crap

Sep 17, 2009 | 08:06 PM

#14

0Diesel Dawgs Performance

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From: Western NC

Check the voltage on your APPS, and Clean both your MAP and IAT sensors.

Sep 18, 2009 | 06:57 AM

#15

0331grunt

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From: Webbers Falls, OK

Quote:

Originally Posted by 01quadcab

throw some 2 stroke oil in to help lube everything injectors could be a little full of crap

How much should I put in?

Quote:

Originally Posted by lukesdiesel

Check the voltage on your APPS, and Clean both your MAP and IAT sensors.

I will work on that this weekend. What should the voltage be?

Sep 18, 2009 | 07:08 AM

#16

Jazz

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From: Wisconsin

Quote:

Originally Posted by 0331grunt

How much should I put in?

I will work on that this weekend. What should the voltage be?

1 Quart per tank

It will tell you on the back of the apps sensor. A little white tag

Sep 19, 2009 | 02:25 PM

#17

0331grunt

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From: Webbers Falls, OK

How often should I put the oil in? Regularly or what? Thanks for the tip!

Sep 19, 2009 | 07:17 PM

#18

0Diesel Dawgs Performance

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From: Western NC

I put some in everytime I fill up my tank.

Oct 19, 2011 | 09:45 AM

#19

four_wheel_n

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From: Cda, Idaho

Quote:

Originally Posted by Wyatt Earp

It could be. Poor fuel economy can result from a poorly functioning VP44 injection. It is more likely in your case that the TC is bummed though as this tranny is commonly referred to as the slush box. Get a BD valve body and TC or some other sort of combo and watch the mileage climb.

I have an '01 2500 4x4 with auto tranny and I'm barely gettin 13 for fuel mileage on the highway. I put a raptor 100 fuel pump on (fuel pressure is 19/20 at idle, 12 at wot), adjusted the valve lash, cleaned the air filter, changed the fuel filter, it has an intake, exhaust, edge juice w/attitude. I had it on cruise at 55 on mileage setting for about 250 miles the other day and it got about 13 mpg hand calculated. Not sure what's going on but I'm pretty sure something is f-ed up.