How do I know when my truck REGEN's?

[Big_Red_Diesel]

Newbie here with a newbie questions.

I purchased my first diesel truck two months ago, 2008 RAM 3500, 6.7 Cummins. In many of the posts I've read owners know exactly when the truck goes in to REGEN and how long it lasts. I read through my owners manual and it mentions a message will display if the PDF is at 80% or higher capacity. The manual didn't mention anything, that I could find, about a REGEN message while it REGENs.

How do I know when my truck REGEN's?

[gonsnow]

MPG will drop to about 10 to 12 MPG

[Courierdog]

The best way is to have a Pyrometer gauge installed.
The EGT raises to 1200 Plus degrees during Regeneration from the stock 960 degrees.

[-lenny-]

I agree, a pyrometer is the most accurate way to tell when in regen. Watching the lie-o-meter is a good indication, but nowhere near 100% indication. The Edge Insight monitor also tells you when in regen.

[insane3639]

i agree with lenny i had the insight and it would alert me when a regen was happening and the EGT's were obviously high as well

[nated6.7]

You'll see a mileage drop on the overhead, and you may or may not notice the engine temp rise a tad above normal, it goes back down when it finishes.

[pepsi71ocean]

in regen my coolant temps spike to ide say 210's, its well beyond the 200 mark etic,

truck can be hot as hell underside.

[yfz431]

Originally Posted by gonsnow

MPG will drop to about 10 to 12 MPG

Heck, my truck must be in constant Regen then

[dad2bike]

I've never seen the coolant temps rise during a regen. Back when I had them.

The best way to know you are in regen is to monitor the EGT's.
I have doubts about the insight regen monitor with the the latest J35 flash. I've seen posts of regens almost constantly reported by the Edge. Seems like the flash messed with whatever the Edge is monitoring. I would love to hear from an Edge person that has a pyro probe & J35 flash to confirm the Edge rgen monitor is signalling when it IS in regen.

[pepsi71ocean]

Originally Posted by yfz431

Heck, my truck must be in constant Regen then

if i am not towing atleast 10,000lbs with my 08 i will be in regen from when i start the truck

[blackmega3500]

The most recognizable way to identify a regen is under deceleration you will hear a slight engine knock due to the 4th injection taking place, at idle you will hear a consistent turbo whistle just sitting still this is a result in the vgt building back pressure assisting in keeping regen temps up, also your exhaust will be hot as hell so be careful walking past the tail pipe, and in stock form during a regen the truck will run like a bat out of hell. Oh and if you ever turn your truck off during a regen you'll hear a crackling noise from beneath the truck this is from the heat expansion of the metal due to high egts.

[firemansdiesel]

Yep, I agree w/ the above on using a EGT guage for the accurate way of monitoring regens. My regens shoot to 1050*/1100* max for me when in active regen then drops to 800*-900* after 15-20 min for a few more minutes, then back to normal cruising EGT of 650*-750*... Seems after the flash I had in October (BB Flash for the '09's), my truck regens heck of a lot more than before. The J35 I have notice nothing different from before (as for regens frequency).