Regen indicator

[Bob4x4]

For 2013 there are five exhaust temperature sensors:

Exhaust Temperature Sensor (T1) is located in the front exhaust pipe.
Exhaust Temperature Sensor (T2) is located in rear of the Diesel Oxygen Catalyst (DOC).
Exhaust Temperature Sensor (T3) is located at the rear of Diesel Particulate Filter (DPF).
Exhaust Temperature Sensor (T4) is located in the center of the Selective Reduction Catalyst (SCR) near the ammonia sensor.
Exhaust Temperature Sensor (T5) is located at rear of the SCR.

 

[Newsa]

Thanks. I appreciate the info. It confirms that Sensor 3 gives me the most accurate DPF temp. I'll check it out on my OBD2. Must have missed that.


What does the diesel oxidation catalyst do? Burn unburned hydrocarbons? Or get rid of Carbon monoxide?

 

[gsbrockman]

Must have missed that.


What does the diesel oxidation catalyst do? Burn unburned hydrocarbons? Or get rid of Carbon monoxide?

http://lmgtfy.com/?q=what+does+the+diesel+oxidation+catalyst+do?

 

[AaronOregon]

I agree with the OP. Screw all the computer monitor/keyboard mechanics. 1/2 the guys on this forum probably don't even change their own oil. Their has to be a simple wire you can tap into to power an led light in your dash. I don't care about having one, but to each there own. What about the wires that go directly down to the DPF filter? Get a wiring diagram and see which one goes hot when it kicks in, then follow it up away from the heat and tap it. (Ha, ha..... did he say "tap it"?)

 

[Bob4x4]

I agree with the OP. Screw all the computer monitor/keyboard mechanics. 1/2 the guys on this forum probably don't even change their own oil. Their has to be a simple wire you can tap into to power an led light in your dash. I don't care about having one, but to each there own. What about the wires that go directly down to the DPF filter? Get a wiring diagram and see which one goes hot when it kicks in, then follow it up away from the heat and tap it. (Ha, ha..... did he say "tap it"?)

HaHa right.There is NO wire that goes hot for regen.Like I said early on-DoNOT tap a wire."I am my own warranty station".If you only knew how much diy guys have helped fund my early retirement.BTW thank you to all who have added to my fund over the years...........

 

[TCDiesel]

I'm with Bob4x4 on the No wire tap, the correct place is OBD plug in.

 

[Kirwin]

Maybe in your mechanically injected 12 valve truck this might work, but not in todays sophisticated all computer controlled trucks! These things are drive by wire. Guess what happens if you change the resistance on one of those wires by "tapping" it???? You do realize when you step on the accelerator pedal, all your doing is changing an input to the computer that is running your whole truck right? Via those wires you want to tap?

Hey, I say go for it!! Bob4X4 needs the money!

I agree with the OP. Screw all the computer monitor/keyboard mechanics. 1/2 the guys on this forum probably don't even change their own oil. Their has to be a simple wire you can tap into to power an led light in your dash. I don't care about having one, but to each there own. What about the wires that go directly down to the DPF filter? Get a wiring diagram and see which one goes hot when it kicks in, then follow it up away from the heat and tap it. (Ha, ha..... did he say "tap it"?)

 

[josephc1]

When I first got my new to me Ram it did not have a backup camera. I was use to a backup camera and I feel it a necessary safety device. I was going to buy a camera and tap into the backup lights. After reading about the can-buss computer systems on these trucks I took it to the dealer and spent the $500 + $$$ and had them install the factory system. They installed it and put the view on the radio display and did a great job. No telling what it would have cost me had I started splicing into wires. I think I got off cheep for the $500.

 

[Newsa]

HaHa right.There is NO wire that goes hot for regen.Like I said early on-DoNOT tap a wire."I am my own warranty station".If you only knew how much diy guys have helped fund my early retirement.BTW thank you to all who have added to my fund over the years...........

I appreciate all the advise from tbose who have owned many generations of trucks, those who write for TDR, and those who turn wrenches for dealerships. I don't always get accurate info from my service writer. But i get good solid info and advice here.

Maybe in your mechanically injected 12 valve truck this might work, but not in todays sophisticated all computer controlled trucks! These things are drive by wire. Guess what happens if you change the resistance on one of those wires by "tapping" it???? You do realize when you step on the accelerator pedal, all your doing is changing an input to the computer that is running your whole truck right? Via those wires you want to tap?

Hey, I say go for it!! Bob4X4 needs the money!

I agree with 90% of what is said here. Wires don't simply go hot or cold in these trucks. The wires carry bit data from computer to module and back again (as well as sensor to module). I also would like to point out that active regens are controlled (it is my understanding) by a fuel after injection pulse (active regens are conttolled by the fuel system, not the exhaust/emissions system). Wires from the exhsust/emissions system carry temp data, pressure data, and Nox data to the ECU and modules (so data is collected from emissions, but regens are not turned on there). Apparently, there are no O2 sensors, but could be other sensors i've not mentioned.

The only point I disagree with is that 12 valves had a dpf. But then again, maybe he was stating that 12 valves had a simpler system with more mechanically operated/controlled systems,were not drive by wire, and even had mechanical fuel pumps. I agree that you might have success tapping wires in a 12 valve.

 

[Dl5treez]

I agree with the OP. Screw all the computer monitor/keyboard mechanics. 1/2 the guys on this forum probably don't even change their own oil. Their has to be a simple wire you can tap into to power an led light in your dash. I don't care about having one, but to each there own. What about the wires that go directly down to the DPF filter? Get a wiring diagram and see which one goes hot when it kicks in, then follow it up away from the heat and tap it. (Ha, ha..... did he say "tap it"?)

*It's not that simple now with multiplexed electronics and CAN-BUS. * * You can't even hook them back up beeper to the back up light circuit anymore without ******* off computers to the point where stuff under the hood quits working because of stuff done at the *** end of the chassis. **

*And since we're on the subject, yes I change oil...

 

[Bob4x4]

The op has 3 dealers in his city that will be happy to repair the damage he may do,Too far away for me to help unless I go visit my old high school,Canyon Del ORO-go Dorados!!! The auto folding mirrors folding in when shut down sounds good at first glance but if the door modules were to loose ignition feed while driving(which I have seen)the mirrors would fold in by default? There is a lot going on in these trucks for safety and of course clean air.Damn near everything is monitored these days,forget about the big things like engine controls-even the radio antenna is being monitored.10 years ago I read something like 6k dtc's more than that now I would bet

 

[Jim W]

The only point I disagree with is that 12 valves had a dpf. But then again, maybe he was stating that 12 valves had a simpler system with more mechanically operated/controlled systems, were not drive by wire, and even had mechanical fuel pumps. I agree that you might have success tapping wires in a 12 valve.

Are you suggestion that the 12V engines had a DPF (Diesel Particulate Filter) on them? If so where was this installed? If I remember correctly this piece of emission control device was not required by the EPA until 2010 to meet Tier IV, Bin V emission. Cummins choose to comply with this requirement early and started with the 6.7L, 24V engine in January 2007 thus the 7.5 trucks with this engine installed. My oldest son has a 1996, 5.9L,12V, truck and a 2006, 5.9L, 24V and these trucks never ever had any DPF installed on these truck.

 

[Newsa]

Are you suggestion that the 12V engines had a DPF (Diesel Particulate Filter) on them? If so where was this installed? If I remember correctly this piece of emission control device was not required by the EPA until 2010 to meet Tier IV, Bin V emission. Cummins choose to comply with this requirement early and started with the 6.7L, 24V engine in January 2007 thus the 7.5 trucks with this engine installed. My oldest son has a 1996, 5.9L,12V, truck and a 2006, 5.9L, 24V and these trucks never ever had any DPF installed on these truck.

No. I was disagreeing with the previous post. I didn’t know if Kirwin was suggesting that 12 Valves have a DPF that you can tap into a wire on. I was saying that all the 12 Valve cummins i've seen don't have a DPF. Maybe I misunderstood his post about tapping into a wire on a DPF?

 

[Jwskj]

I've got another question...also regarding the regen process...I think.

When is DEF consumed? Is it just during the regen process, or is it consumed at some variable rate during normal driving, depending on engine loading? I'm thinking that if DEF is only consumed during regen, that's a good thing to know. Anybody have an answer?

 

[Newsa]

I've got another question...also regarding the regen process...I think.

When is DEF consumed? Is it just during the regen process, or is it consumed at some variable rate during normal driving, depending on engine loading? I'm thinking that if DEF is only consumed during regen, that's a good thing to know. Anybody have an answer?

DEF is consumed pretty much all the time that the engine is running after the entire ScR is warmed up (heat is part of the process) at a slow rate (and yes at a variabke rate with engine loading) Some have suggested that DEF is consumed at a higher rate during active regen. I'm not sure that is true. The reason I'm doubting higher DEF consumption during active regen is because that extra fuel used for active regen is burned in the DPF (not the cylinders) which would not contribute to significantly more NOx.

But it is possible that dEF might be injected at a higher rate during active regen. I just don't see any evidence it is or any reason it would be.

Both DPF and SCR require heat. But they are separated emissions components. DEF is for the SCR., not the DPF.

 

[Jeff Gurr]

I wouldn't be able to drive if I had all those numbers to watch. Now I want one. Is there a unit like that which records data over time?

Newsa, # 1 is the DOC Inlet, 2 is the DOC outlet, 3 is the DPF outlet. 4 CAT Mid Bend, 5 CAT Outlet.View attachment 97975

 

[Bob4x4]

I wouldn't be able to drive if I had all those numbers to watch. Now I want one. Is there a unit like that which records data over time?

Very good point-distracted driving.
While trying to monitor a full page of live data real time............we should use a driver so we can play detective

 

[Kirwin]

No, 12 V trucks did not have a DPF installed. I was only suggesting that the design was extremely simple. The only emissions component on the truck external to the engine was a catalytic convertor installed on any truck built after 1/1/1995. Other than that, the engine was completely mechanical. The computer controlled things like: the grid heaters, the alternator field, the cruise control operation, and the transmission solenoids based on a throttle position sensor, but other that that it was completely mechanical. You could tap any wire you want and as long as the fuel solenoid had 12 V on it, the truck would keep running. If it was a manual truck, you could continue to operate indefinitely this was as long as you could start it. I have done it when I burnt up a fusible link years ago.

Are you suggestion that the 12V engines had a DPF (Diesel Particulate Filter) on them? If so where was this installed? If I remember correctly this piece of emission control device was not required by the EPA until 2010 to meet Tier IV, Bin V emission. Cummins choose to comply with this requirement early and started with the 6.7L, 24V engine in January 2007 thus the 7.5 trucks with this engine installed. My oldest son has a 1996, 5.9L,12V, truck and a 2006, 5.9L, 24V and these trucks never ever had any DPF installed on these truck.

 

[TCDiesel]

Hmmm if you were flying your own plane and it failed from lack of oil pressure.. I bet minutes before YOU crashed and died you would have wished you paid more attention to the gauge.. (remember the Cummins Ram gage is LOM). Just to Illustrate. If you want to guess at what happening under the hood that your preference ,IMO don't come to the WEB *****en and wanting help with no more then codes or pictures. The IQ can be programed to log info..

 

[Newsa]

I wouldn't be able to drive if I had all those numbers to watch. Now I want one. Is there a unit like that which records data over time?

Torque App for your phone does it if you have a bluetooth enabled OBD2 reader. Only works with android, though (I think)