High EGT's while towing??????

[Cummins724]

My brothers 04. 5 has dual 4" exhaust, AFE filter box, Triple dog & edge EZ stacked. When towing the edge is on, but the T-Dog is shut off & the egt gauge on the outlook is reading 1500* at times. We have tried every possible scenario from T-Dog only [on tow] to everything unhooked & set to stock. The egt's still get up there even on stock setting. The original outlook gauge from the kit said to put the pyro pre turbo & that is where it is. We thought the outlook was bad & sent it back & they sent us a new outlook monitor. This instruction sheet says post turbo on dodge applications. Why? Is the outlook not giving true readings pre turbo? Should it be moved to post turbo? We tried a new pyro, but same readings. Help!

 

[JRD]

How much are you towing, whats the terrain like in your area, your elevation and at what speeds are you pulling those loads? Is the truck a manual or auto?

 

[Cummins724]

The truck is a 6 speed. It is usually hauling about 5-6 ton, but the egt issue is happening even when the truck is empty. I checked for boost leaks & found none. The hills that we pull are usually 4-5% grades @ 55-65 mph on highway. The temps are high even on small hills going 35-45 back road driving. Elevation is between 3-4000 ft.

 

[WStephens]

have to checked for any restrictions in the air intake pre turbo?

 

[Cummins724]

I'll double check it again. anything else?

 

[pwr2tow]

Check with the manufacture of your monitor, maybe they have it calibrated different for post turbo installation. That would account for it reading high pre turbo even stock as the temps would be higher pre turbo than post turbo in the exhaust flow.

 

[Forrest Nearing]

keep it pre-turbo



I was under the impression that bone stock HO CR engines would do 1500*

 

[Rams-n-Hogs]

The 3rd gens do run hot. Is he keeping the engine RPM above 2000? My truck actually defueled one time pulling a trailer, (when my brother was driving), because he was only doing 55 up a grade, and started lugging the engine. I told him to either use tow/haul, or drive faster.

 

[JUeckert]

i have the same prob of high egt's when towing. hiting the 1300 degree mark is a snap,trying to keep it under the 1200 degree mark takes effort. i like to stay under the 1100 mark for prolonged periods,but its really hard if the terrain is unlevel at all. even empty hitting high egt's is quite simple to do,my truck is a 05 bone stock. truck has great power,i just cant tap into it to hard!

 

[Forrest Nearing]

if your truck is bone stock then you can tap into all of the power!!!! the 3rd gens run hotter... the old 1300* number does not apply to them

 

[JERRYKAM]

I tow a 10k 5th wheel (total combined weight of 19K). Generally I do not have to watch my EGT while towing on level highway. There are two conditions however under which I keep a fairly close eye on the EGT. First is on subtle lengthy upgrades which can be sneaky. Usually turbo boost tells me that the grade is changing and obviously on a steep upgrades. Second is towing at altitude. I live in CO and a lot of my towing is in the Rockies. Towing at altitude results in higher EGTs than towing a lower altitudes. In either case EGTs can quickly rise to in execss of 1300deg. 1300 is my self imposed limit and I do whatever is necessary to keep it under that temperature. Obviously slowing down works and does the trick 80% of the time.

 

[Boondocker]

I wouldn't be too happy to buy off on the "3rd gens run hotter" line, sounds like something a salesman would say. Spiking the temp isn't a big deal, but running hot is. If you're really concerned, and you should be, get an EGT gauge. Tap another hole in the manifold and run a second EGT gauge, that will give you something to compare.



How's the intercooler? Maybe you should remove it and give it a carefully cleaning.

How are the rubber turbo boots? Maybe they're soft and collapsing, thus restricting flow.

How are the engine coolant temps? Is there an overall heat problem, or just EGT?



Good luck. I'm sure your bro will feel more comfortable running cooler.



Neil

 

[pwr2tow]

Internal engine design allows the 3rd gens to run hotter than previous models.

 

[Cummins724]

When towing the hills sometimes engine temps reach 216* & don't come down till decline of hill. The boost gauge with the T-dog on performance only gets 21psi boost & on crazy Larry only gets 25-27 psi. [I'm talking about with no trailer totally empty. ] Is this what you guys get with the dog? The idea that the radiator & intercooler need cleaned is probably true being that the truck has 60k on it & hasn't had it done yet. My brother definately keeps the revs up, but egt readings go up when he downshifts. If he rides out 5th gear on a pull... he gets lower egt's then when he downshifts to 4th & brings the revs up. I too have heard that the cummins 600 has coated pistons/combustion chambers that take higher egt's, but why max them out if you plan on the truck lasting awhile?

 

[Tryingit]

I also have the 04. 5 very rarely towing will I hit the 1350 mark. I would take some grade for it to climb. Most moderate grades are under the 1300 degree mark. Of course I must take it out of OD and let off of the pedal. My quad standard with the extra boost helps a lot. I tow a 11K 5th wheeler.

 

[geusterman]

More fuel means more heat. Tryingit is probably pre-turbo as am I with same EGT #'s. I would not want to be higher than I get stock under load for very long and would try to find more air... or less fuel. You may need to drop back a bit hauling heavy until you get more air. 1500 degrees on a long climb... freaky to me. George

 

[Forrest Nearing]

I've heard of stock 3rd gens loaded at high altitude getting up over 1500*



they're built to take some heat for sure

 

[amsoilman]

I would not run a 3rd gen CTD over 1350 F. for ANY length of time. Try to keep it under 1300 F. if you can.



*these temps are taken BEFORE the turbo*

Also make sure you have good "boost" of at least 30-35 PSI, and that will help to keep the EGT down. MY boost max's at 40 PSI.



Wayne

amsoilman

 

[Cummins724]

Why does this truck only get 21-25psi boost... even with the edge & T-dog on kill. He checked for boost leaks & found none.

 

[amsoilman]

Why does this truck only get 21-25psi boost... even with the edge & T-dog on kill. He checked for boost leaks & found none.

I would suggest he check out all the connections, on the innercooler again for leaks. A stock truck such as his should make 25 PSI boost.



Wayne

amsoilman