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Dodge Ram Cummins Diesel Questions

642 messages,  Last post on Nov 12, 2009 at 5:22 AM

You are in the Dodge Ram Forum. Your Host is kcram

What is this discussion about? Dodge Ram Pickup 2500, Dodge Ram Pickup 3500, Diesel, Truck

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#505 of 642 Re: 1996 2500 Ram 4x4 Diesel fuel mileage [kcram] by oly2 Feb 23, 2009 (8:00 am)
Replying to: kcram (Feb 21, 2009 5:53 pm) Thanks for the input on the mileage. I don't know what the rear axle is I think it is 3:54. I did changed the tire size to 285/75R/16. I have also kept up on the valve adjustment. By changing to a taller tire would that make my mileage seam less when in reality it has not changed. Yes I did replace the throttle cable. Thanks oly2 Replies to this message: kcram (Feb 24, 2009 7:56 pm)
#506 of 642 Re: 1996 2500 Ram 4x4 Diesel fuel mileage [oly2] by kcram HOST Feb 24, 2009 (7:56 pm)
Replying to: oly2 (Feb 23, 2009 8:00 am) Definitely get the speedometer cable adjusted for the new tires. Your mileage may be better than you're calculating.   kcram - Pickups/Wagons Host
#507 of 642 what should the temp. be by barrc_ranch Feb 26, 2009 (4:48 pm)
I have a 2002 dodge ram 2500 4x4 cummins. totally stock. i was wondering where the temp should be on average? and what is the hottest it should be getting while driving?
#508 of 642 07 dodge ram 3500 cummins 5.9 diesel by jaimec Feb 27, 2009 (7:59 pm)
any body i have a o7dodge ram 5.9 diesel when towing a 5 wheel up hill the tranny over heats to about 235 but not over heating in flat road
#509 of 642 by jaimec Feb 27, 2009 (8:01 pm)
under 200 deg. Replies to this message: barrc_ranch (Mar 03, 2009 1:29 pm)
#510 of 642 06 Dodge 2500 5.9 cummins diesel by dsmitty1 Feb 28, 2009 (12:53 pm)
I drive about 35 miles per day to work, 8 of those miles is city. I get 13.5 mpg. Highway unloaded I get 16 and towing my 5th wheel I get 8.5. The dealer has updated the computer chip and checked the boost, all within specks. Can anyone give me an honest answer on what kind on mpg I should expect? I have talked to Cummins and they say it is on the lower end. Any ideas? Replies to this message: oly2 (Feb 28, 2009 2:59 pm) jaimec (Feb 28, 2009 5:22 pm) kcram (Feb 28, 2009 9:25 pm) rs6309 (Mar 05, 2009 8:28 am)
#511 of 642 Re: 06 Dodge 2500 5.9 cummins diesel [dsmitty1] by oly2 Feb 28, 2009 (2:59 pm)
Replying to: dsmitty1 (Feb 28, 2009 12:53 pm) I have the same problem with my 96, the same engine 5.9. The HOST brought to my attention about my tire size. My tire size is about one to two inches taller then the stock tire. I am going to have my speedometer checked. This might be your problem. Hope this gives you some help.
#512 of 642 Re: 06 Dodge 2500 5.9 cummins diesel [dsmitty1] by jaimec Feb 28, 2009 (5:22 pm)
Replying to: dsmitty1 (Feb 28, 2009 12:53 pm) i pull a 5thwheel i get 10.5 and the total weight combined its 24,000 with 07 3500 dually
#513 of 642 Re: 06 Dodge 2500 5.9 cummins diesel [dsmitty1] by kcram HOST Feb 28, 2009 (9:25 pm)
Replying to: dsmitty1 (Feb 28, 2009 12:53 pm) If you're running 4.10 axles, your mpg is about the best you'll do if everything else is stock (including the tire size). They keep the engine revving higher than the 3.73s at the same road speed. The most efficient rpm for the Cummins is just above its initial torque peak, in the 1600-1750 range.   The problem is, even with 3.73s, you're traveling on the slow side to get that top mpg... in my 05 3500 dually [the 05 and 06 engines are identical] with 3.73s, automatic, and stock tires, that has me doing just 52 mph (which on most highways will get you run over even by school buses). At that speed, I'm well over 20 mpg. But at 65 mph, I'm down to 18.5-19.   Dodge addressed this last year by offering the 3.42 axle with the 6-speed automatic. The taller axle has reduced towing capacity, but in that config, people are achieving well into the 20s even at 65 mph.   kcram - Pickups/Wagons Host
#514 of 642 Getting Ripped off? by regular_joe Mar 01, 2009 (3:00 pm)
I believe that I am being gouged by a diesel repair shop and would like an experts opinion. Dodge dealer said my low power ( 2000 dodge ram 2500, cummins turbo) was caused by the transfer pump. They wanted $1300 to replace it. I called around and ended taking it to a shop specializing in Cummins engines. I told them what the Dodge dealer said. The next day the cummins shop called and said that they could find no computer codes indicating that any thing was wrong. They said that their next step was to put the truck on a dyno and the cost was $350. I initially balked and ended up talking to the repair rep. I reluctantly agreed to the test. Next day they called and said that as they retested for low fuel pressure, it got progressively worse and that yes, I needed a new fuel transfer pump. Shouldn't they be able to diagnose this problem without a $350 dyno test? ( Plus $500 for new pump and labor) . Replies to this message: jake78 (Mar 01, 2009 5:22 pm) kcram (Mar 01, 2009 5:23 pm) partsman2k (Jun 04, 2009 12:54 pm)

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