2005 EGT Concerns & Questions

[Marty1]

I finally got my XMonitor installed in my 05 & I was shocked the first time I accelerated in it... what's the deal with these Third Gens that make them run so hot?

I can't quite understand why DC would put out a product without a Pyro in this form? My truck has no engine mods of any kind yet & towing my trailer I could run the XMonitor to 1500 degrees... isn't that a little risky for the guys that are towing 5th wheels & don't really know the danger of such things?

I haven't acctually tried this so maybe the computer will defuel or something to prevent problems but in my truck with no trailer, I can set the alarm on the XMoniter which is set at 1260.

 

[EEngel]

Hot Running

Marty,



1500 seems a bit on the high side (especially for stock). Did you check the accuracy of the BD monitor? What temp are you running when you are ideling?

 

[Bertram65]

I think a couple people have posted the X monitor reads high.

For every TDR member that has gauges and worries about EGTs, trans temps and such there are 25 other Dodge truck owners who just drive the trucks, work them hard every day, they don't worry about what kind of oil to use, when to change the fuel filters or how long to wait to shut down. These engines and trucks are tough, stock they can take whatever you can dish out as long you are within the rated capacities of the truck there is nothing to worry about.

 

[Tim]

I don't want to be one of those 25, I want my truck to last as long as possible. Those 25 others will trade their truck when it becomes problematic. I will fix mine. Maintenance and making sure your equipment operates correctly is part of owning it if you ask me.

 

[Marty1]

I don't want to be one of those 25, I want my truck to last as long as possible. Those 25 others will trade their truck when it becomes problematic. I will fix mine. Maintenance and making sure your equipment operates correctly is part of owning it if you ask me.

I'm with you Tim.

I can see the XMonitor being out a few degrees but I'd put money that it's not out a few hundred degrees.

I'd been told the Third Gen's run hot & PDR is putting in many many hours of R&D trying to find ways to rectify the problem, from Twins to Cam shafts & everything in between... I just never realized how much hotter they run than the 1st & 2nd gen trucks.

I won't run my truck over 1300... never. 1500 was just a guess but I can only assume if I can get it to 1260 unladen... 1500 is probably on the light side once a guy hooks to an 8T trailer & starts heading to the mountains... no?

I don't think I'd run a box without twins.

 

[wbrown02]

Soooo..... Do they run hot or not? I too have the X Monitor and have seen just over 1300 temps without the trailer? Something to worry about? I haven't made a good pull yet . Will find out soon.

 

[jacqnbill]

Soooo..... Do they run hot or not? I too have the X Monitor and have seen just over 1300 temps without the trailer? Something to worry about? I haven't made a good pull yet . Will find out soon.

Well I have seen 1500 on my unit pulling a 5th wheel. As soon as I saw the reading I backed off. My unit is stock and runs 300 to 400 degres hotter than my 1998. I watch it like a hawk. Just wonder what the people without pyros do. I would think they would blow the pistons if 1500 is toooo hot.

 

[dodgerep]

that makes me wonder why my 041/2 egts are running extremely low. my egt reads usually around the 650 range (mounted after the turbo) and even accounting for as much as a 300 degree fluctuation, I am still under 1000 running hard accelleration and loads of 68%. I am using the attitude juice box, and everyone talking about these high egts has me wondering if my guage is reading right.

 

[Marty1]

Here we go again Marty!

In your first post you said you saw 1500 and now it was a guess. Sounds like the little boy that cried wolf. If you didn't see it happen it didn't happen period so why post it.

You are in very good hands @ PDR and I for one Hope they take the time to explain things to you so you can speak after thinking.

There are a lot of variables when doing an empty run when it comes to exhaust temp. I have spent enough time tweaking manual pumps to know this. In this area my empty test is max 150deg short of full loaded temp.

This is the way I test it that has been verified by many trucks that I have set up.

Boy JC... You don't read very well do you... better go back & have another crack at it... I did not say in my post that I've ever had my EGT's at 1500 degrees... I said I could make it go to 1500 with my trailer behind me & the engine in bone stock form... this concerns me.

What's your problem anyway... other than the English language? :-laf :-laf

 

[dodgerep]

I worked with two performance injection shops, one in milwaukee and one in austin texas, and both of them were pretty consistent in their appraisals of my situation, I was also concerned about the position of the pyro, but they both agreed that there should not be more than 150 degree difference in the post and aft mounting position, and said that the pre turbo mounting on the exhaust manifold was never going to offer a correct reading bercause it was reading off the front three cylinders, and would not give an accurate reading on the back three cylinders.

 

[Buddy's Ram]

My truck is bone stock, and the pyro is mounted pre-turbo on the rear cylinders.

I have seen 1400 degrees when climbing a 10% grade at 60 mph in overdrive.

Just me and my daughter in the truck, not pulling anything.

I pushed the tow/haul button on the gear shift and the temps dropped to 850 almost immeadetly. So in my experience these trucks do run hot, but run well also!

 

[Vaughn MacKenzie]

300F is OLD SCHOOL

that makes me wonder why my 041/2 egts are running extremely low. my egt reads usually around the 650 range (mounted after the turbo) and even accounting for as much as a 300 degree fluctuation, I am still under 1000 running hard accelleration and loads of 68%. I am using the attitude juice box, and everyone talking about these high egts has me wondering if my guage is reading right.

Dodgerep, 300 degrees is a very poor rule-of-thumb when using post-turbo to predict pre-turbo. With these hot 3rd Gens I wouldn't even consider running post-turbo, at least if you plan on upgrades of any sort.



If you want a more realistic number add at least 500-700 degrees to your post-turbo during hard acceleration to get a more realistic number. This is due to quicker EGT spike and very restrictive exhaust turbine compared to previous generation trucks. 300F is old school from the 12-valve days when trucks had less HP and markedly larger exhaust housings.



Vaughn

 

[jnelson]

Lets see -

Mounted on my exhaust manifold I could easily get my egt's up 1300+- in a hard excelleration with my edge on high.



Mounted post turbo I can on gey my EGT's to around 1000+- on a hard excelleration with my edge on high. this is with an ATS manifold.



I have seen temps upwards to 1500+ pulling a 17-20,000 lbs loads in the mountains and also in the flat lands upon initial acceleration to highway speeds.



My egt's run relatively the same temp with my edge on low or stock. Just had #2 and#3 injectors replaced had #5 pulled and it was o. k.



Cummins recommends a post turbo reading of no higher than 1100* Cummins does not have any pre turbo (exhaust manifold) temp. specs.



I keep an eye on my egt's and try not to let them set on 1100-1200 for any extended time. Other than that I dont worry about it. If this motor goes to pot before 400,000 I will go to a Duramax. I traded my last truck in at 433,000 and it still ran great.

 

[juicedcummins]

Marty1,

You were right I completly missed the last paragraph of your post. Too much going on @ once I guess. [baby screaming etc]

 

[Marty1]

No harm done CJ... Give us a kiss & everything will be well again. :-laf :-laf

 

[sick_ram]

1500 is too hot for stock you must have a bad gauge.

 

[Vaughn MacKenzie]

Cummins recommends a post turbo reading of no higher than 1100* Cummins does not have any pre turbo (exhaust manifold) temp. specs.

I have seen people melt down running 1250F sustained pre-turbo (JNutter aka Shooter for example). The gauge may have been off a bit. When you are pushing the limits you're easily within the difference of gauge error, which may or may not bite you.



Vaughn