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prg2010
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« on: June 15, 2011, 03:51:26 am » |
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Alright need ur help again which cummins engine got better fuel milage the 5.9 or the 6.7 both with 3.73 rear end i believe and automatic with 4x4!!
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Austin
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« Reply #1 on: June 15, 2011, 04:28:14 am » |
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5.9, not even a comparison. If it isnt broke dont fix it.
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Peachcreek
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« Reply #2 on: June 15, 2011, 04:58:38 am » |
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5.9, not even a comparison. If it isnt broke dont fix it.
x2 the only thing with the 5.9's '03-'07 is the injectors tend to fail after about 100k-150k with the new low sulfer fuel and the 6.7 doesnt seem to have a problem with it. this is just my experiences and that of a cummins mechanic friend of mine. some people get lucky though. |
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Bar W
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« Reply #3 on: June 15, 2011, 05:21:07 am » |
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My buddies 5.9 with a programmer and 38's got 24 I can only get 19 out of my 6.7 with the same extras and 34's. Injectors are a concern but you can get rebuilt injectors for bout $150 a peice and have em put in for about $600.
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Reuben
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« Reply #4 on: June 15, 2011, 07:27:42 am » |
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Is the 5.9 the straight 6 cummins? Also what programmer was used if you don't mind me asking?
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Training dogs is not about quantity, it's more about timing, the right situations, and proper guidance...After that it's up to the dog...
A hunting dog is born not made...
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treeingratterrier
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« Reply #5 on: June 15, 2011, 08:52:19 am » |
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I got 16 mpg wilth 2 4x4 5 speed duallys with the edge with attitude,(4.10) pipe, aftermarket air cleaner, one was a 98 5.9 and other was a 2001, wife has a 3.54 2 wd automatic and gets about 18 in her dually with edge pipe same extras. My 6.7 4x4 (3.73) with complete delete and Smarty 67 ME gets about 20mpg. its single rear wheel and 6 speed manual and 5 inch pipe. The 6.7 is a good truck after u delete it and update the clutch, 120k and no injectors so far, runs better than new after the egf pdf delete. The clutch needs to be updated to the Southbend one about $1500 and I am nursing it another 10k miles. If i turn up the Smarty beyond 30 hp it will slip, the dual mass is a junk set up and no good, its gone out beofre on me with stock motor. The 5.9 i had all had the usouthbend update and no clutch prob after that install and 200k miles, also updated the input shaft on the nv4500 t the same time and the hydra slave cylinder, those southbend clutches are hell on pedal presure increases, they have the hyda update in mos clutch updates now sold, back then thye did not tell u if will kill your leg in San Antone or Usston Texksus traffic!!!lol
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DangerZone
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« Reply #6 on: June 15, 2011, 09:00:31 am » |
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What yr model 5.9? 03-05 5.9 fuel systems had a tendence to self contaminate causing inj. issues and eventual eng. failure,there was a recall to patch this problem, PM me the full 17 digit VIN ## and I can check it for you to see if and when the recall was done.
6.7 don't get the mpg the 5.9 does, the 07-09 had a lot of check eng light problems mostly programing issues. and when it is soccer mom'ed or grampaw'ed daily they get emission carbon build up and will need servicing.
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« Last Edit: June 15, 2011, 09:10:34 am by DangerZone »
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From squeal to meal with one good stick!  Hunting is not a sport, It's a way of life...Danny Ward |
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Circle C
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« Reply #7 on: June 15, 2011, 09:09:14 am » |
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I've got 3 5.9's in the driveway. 1999 24v 5 spd 4.10 Edge + airdog, 2002 24v 6spd 3.73 Edge, 2003 cr 6 spd 3.73 Diablo
I can get great mileage in all of them, or crappy mileage in all of them... all depends on the right foot. All of them have programmers of some flavor, upgraded clutches, either southbend or valair, and all of them are worked. Had to replace a vp44 in the 2002, but never an injector. The 2003 CR has been through a couple injectors, but to be fair I was running an Edge pressure box on the highest setting for thousands of miles towing.
This past weekend I used the 99 dually 4x4 hooked to a 24x7 stock trailer with 12 steers and 3 horses and I averaged 13.8 mpg. The 2003 with the same load can get 2 mpg better doing the same job.
I don't have any real world numbers on a 6.7
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Never get too busy making a living that you forget to make a life.
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DangerZone
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« Reply #9 on: June 15, 2011, 09:11:20 am » |
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What yr model 5.9? 03-05 5.9 fuel systems had a tendence to self contaminate causing inj. issues and eventual eng. failure,there was a recall to patch this problem, PM me the full 17 digit VIN ## and I can check it for you to see if and when the recall was done.
6.7 don't get the mpg the 5.9 does, the 07-09 had a lot of check eng light problems mostly programing issues. and when it is soccer mom'ed or grampaw'ed daily they get emission carbon build up and will need servicing.
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From squeal to meal with one good stick! Hunting is not a sport, It's a way of life...Danny Ward |
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Circle C
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What yr model 5.9? 03-05 5.9 fuel systems had a tendence to self contaminate causing inj. issues and eventual eng. failure,there was a recall to patch this problem, PM me the full 17 digit VIN ## and I can check it for you to see if and when the recall was done.
6.7 don't get the mpg the 5.9 does, the 07-09 had a lot of check eng light problems mostly programing issues. and when it is soccer mom'ed or grampaw'ed daily they get emission carbon build up and will need servicing.
This post kinda makes me wonder if it was really the Edge pressure box that caused my problems in my 2003. I dumped an injector, flooded the crankcase with fuel, burned up the turbo... all while loaded with 200 or so square bales on a 32' trailer, 120 miles from home. It wasn't a fun day. vin# 3d7mu48c23g857440 |
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Never get too busy making a living that you forget to make a life.
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DangerZone
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Is the 5.9 auto or standard shift? The 5.9 had 545RFE auto, and the 6.7 has a 68RFE. The model ## for the trans's are a description and rating. 545= 5sp. with a 4.5 duty rating, (on a scale from 0-9),, 68= 6sp with a 8 duty rating,, RFE= rear wheel drive fully electronic. The 545RFE's were prone to a lot of failures if work hard and not service regularly. The 68RFE is a very good trans.
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From squeal to meal with one good stick! Hunting is not a sport, It's a way of life...Danny Ward |
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DangerZone
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circle, you have an open steering linkage recall H46 most of them are just inspections with no work done, but some trucks got a light wieght streeing and we replace all the linkage with HD parts
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From squeal to meal with one good stick! Hunting is not a sport, It's a way of life...Danny Ward |
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Circle C
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Thanks,
Will they still honor that recall, given the truck has 220k miles and is 8 years old?
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Never get too busy making a living that you forget to make a life.
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DangerZone
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on 03-05 there is an open air vent on top of the fuel tank that lets dirt/dust in the tank, Engineer's say it only take 2 tsp of dirt in the tank and a dirty fuel filter to to start the failure of the C3 Injection pump, before they figured that out we were putting engs. in farm trucks used in dust areas every 10k to 15k over and over in the same truck. had to do a very good job of cleaning the entire fuel system to stop repete repairs.
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From squeal to meal with one good stick! Hunting is not a sport, It's a way of life...Danny Ward |
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DangerZone
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yeah it's still shows open on your vin ## Circle.
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From squeal to meal with one good stick! Hunting is not a sport, It's a way of life...Danny Ward |
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swampboys09
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The 5.9 was a work horse. You can get great fuel mileage nd performance out of the 6.7 if you get the delete kit for it.
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Stick it deep and, make em squeal  |
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Bar W
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My buddy had a diablo pwoersport programmer, 38's, six inch lift and manual tranny in his 06. It was 3/4 ton 4x4. He also had a straight pipe. He has a newer 2010 model dually now and no DPF problems yet. I've had the delete kit, programmer, cold air intake, and egr delete for bout a month and my 6.7 drives better than it ever did. I got bout ten mph last time I went elk hunting in Colorado dragging a stock trailer with pack mules hopefully it will do better this year.
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Peachcreek
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What yr model 5.9? 03-05 5.9 fuel systems had a tendence to self contaminate causing inj. issues and eventual eng. failure,there was a recall to patch this problem, PM me the full 17 digit VIN ## and I can check it for you to see if and when the recall was done.
6.7 don't get the mpg the 5.9 does, the 07-09 had a lot of check eng light problems mostly programing issues. and when it is soccer mom'ed or grampaw'ed daily they get emission carbon build up and will need servicing.
This post kinda makes me wonder if it was really the Edge pressure box that caused my problems in my 2003. I dumped an injector, flooded the crankcase with fuel, burned up the turbo... all while loaded with 200 or so square bales on a 32' trailer, 120 miles from home. It wasn't a fun day. vin# 3d7mu48c23g857440 Chris I ran my 05 for about 70k with bully dog performance setting on it. performance is suposed to add timming only  I went through 2 sets of injectors before the truck made it to 150k and got traded off when the second set started going out. My mechanic said it is all from the new fuel not being oily enough to keep the injector pistons moving freely. He recodmends putting one quart of trans fluid in the fuel at each fill up. his service truck has 3xxk and no injector problems to date. The injectors for the CR are not 150 bucks a piece as stated above, a set will run around 2k no matter how you slice it. |
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djhogdogger
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X2....all of our buddies that got newer trucks are always offering to buy our truck if we decide to get rid of it. I think that this one is a keeper.  |
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A television can insult your intelligence but nothing rubs it in like a computer.
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