Engine run's hotter with od locked out

[GeneralMachine]

Hi guy's Im new to TDR and owning a Dodge too. I up graded from a ford, Really like this Dodge It's a 2001 3500 Dulley 355 rear's seem's to need a little more power, I pull a 10500 r. v and will appreciate any advice to get my truck set up to pull and do a good job. Harv

 

[Tom G]

Welcome to the TDR

Welcome to the TDR Harv - where massive amounts of valuable information is available at the click of a mouse



Our trucks seem to be about the same. Mine is a 2001, 3500, QC, Auto with 3:54 axle and it also runs MUCH hotter when it shifts out of overdrive into a lower gear. You didn't mention if you have gages or not but they are a very good investment. I pull an Aljo 25' which when loaded (depends on how many options my wife thinks she needs weights about 6500 lbs.



When the truck is pulling a hill in O. D Exhaust Gas Temperatures (EGT) run about 1100 degrees max. This I think; and I could be wrong here since I am not a diesel mechanic; is due to the fact that the amount of fuel is being limited by my boost pressure which never goes over about 15 lbs in O. D.



As the hill gets steeper and the truck shifts out of O. D the EGT get much hotter. It is not uncommon for me to see 1200-1300 degrees on hills with the pedal down and the boost gage reading about 19 lbs. which seems to be the limit for my truck. I watch the gages and try and hold the temperature below 1250 degrees on long hills. For the life of me I can't understand why Dodge doesn't at least make gages an OPTION you can buy/order.



Anyway welcome aboard. I LOVE my dually for towing - it is rock solid in the wind and tows like a dream. At 20,000 miles mine is just starting to run nice.



As far as more power it boils down to how much you want to spend. Try using the search engine and type in True Torque Power Module OR EZ* OR 275 injectors or DD2* and you will have enough reading to keep you busy for days.

 

[GeneralMachine]

Gage's/ Wish list.

Thank's for your reply Tom I was begining to wonder if I was skipping a step. I reserched the rear gear ratio and 3:54 are the true gear's, I have a lot to learn. Gage's are the first thing on my list, and the neat thing is the wife is as excited to get the Dodge tow ready as I am. Don't get me wrong it does a fine job now , but after reading the post im realy excited to know how well it will pull with a ez, and some 275 injector's. Im a Diesel mechanic and am well aware of how important knowing what your exast temp is running. this Is my first dealing with a cummin's and im doing a lot of reading and thinking on getting this truck tow ready. Thank's Harv

 

[Posm]

I know what you mean. My EGT and engine temps move in opposite directions on a long hill. If I lig it the EGT goes up and when I shift down the engine temp begins to climb. One thin to keep in mind, is your final gear ration, especially compared to your ferd. On a Dodge, the Auto with a 4. 10 has the same final ration as a 5 speed with the new 3. 73 rear end. In most instances, I would choose the 4. 10 for big load pullers who prefer the auto.

 

[jbone]

If you put your signature on all posts makes it easier for all us out here to know what you got and make suggestions... . As you can see by my sig. I'm running 4. 10s with auto and EZ... . EZ really helped my rig--she doesn't shift out of O/D very ofter now and temps are much better..... lot of posts on which up-grades (bombs) to do first, but almost everyone agrees on gauges first.

IMO, next would be better air, next exhaust, then EZ... if you have auto, which post seems to imply--start saving $3500 for up-grade, you will need it down the line... ... ... ... R, J. B.

 

[pwr2tow]

Posm,

Good observation on the final gear ratio. I know a guy that has a 5 speed over/under drive and 4:10 gears that wants to trade me even up for my 3:54's, I might have to give this some more concideration now.



Ron