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How do you force a regeneration on a Duramax?

How do you force a regeneration on a Duramax?

The Duramax engine needs to see steady cruise speed, not stop-and-go traffic, in order to properly enter regeneration mode. You must travel above 30 mph for at least 20 minutes until the clean filter message goes off. Periodically engage in steady speed cruises to insure your DPF regenerates.

How often should LML Regen?

How often will a truck go into regen? In our tests conducted, there are two triggers to begin the regen process. The first is once the filter reaches 44 grams of soot and the second is if the truck travels ~700 miles since the last finished regen cycle.

How do I know if my truck is regenerating?

You will know the regen is over when the MPG starts climbing back to normal. If you stop, either parked or at a red light or something, the RPM at idle will be around 750 instead of 500 RPM. The truck just “feels” different when regen is in effect. The engine rumble and exhaust sound is deeper.

How long does a manual regen take on a Duramax?

It should take between 45 minutes and an hour for the process to conclude.

How long does Duramax Regen last?

Just like most other operators that are using our tool for preventative maintenance, this would be the typical experience. Unfortunately, far too often it does not go quite as smoothly. First, as a general rule of thumb, a forced DPF regen should last approximately 45 minutes.

What is DPF on Duramax?

Unless you are familiar with diesel pickup trucks like the GMC Duramax, you probably have not heard of a DPF. The diesel particulate filter is a special exhaust device that traps any type of particulate matter, including ash and soot. The DPF has been designed to capture and store as much exhaust soot as it can.

What is the 9th injector on Duramax?

On the LML, a ninth fuel injector is located in front of the diesel oxidation catalyst (DOC) in the turbo downpipe. It receives its fuel from the aforementioned CP4. 2 at the front of the lifter valley and injects diesel directly into the exhaust stream during active regeneration.

Will Duramax Regen at idle?

This is true. Regen only occurs at sustained speeds above 30 MPH. The elevated idle keeps the exhaust system hot, so regen can resume quicker/easier, once you’re consistently at-speed again.

How long does a truck Regen take?

How long does a truck Regen take? Truck regenerations take approximately twenty to sixty minutes, depending on the type of regen, the amount of build-up, and engine type.

Does Regen use def?

DEF is required for the SCR process to convert NOx into nitrogen gas and water. 5. Next the DPF traps soot. DPF temperatures during an active regen will quickly climb to 1000 deg F in order to quickly burn collected soot off and allow the DPF differential pressure to come back down.

Can you regen while driving?

When everything is working as it should, regeneration occurs automatically while the vehicle is in motion, unnoticeable to the driver. In cases where the exhaust isn’t hot enough to burn off soot on its own, the vehicle can inject fuel into the DPF, thereby raising the temperature to burn away soot.

Does a regen stop on its own?

Will parked regen stop on its own? A parked regen is controlled by your truck’s computer system and only requires the correct conditions to be met. The process should last between 45 minutes to an hour and no longer. If your parked regen takes longer than this or isn’t finishing, something is wrong.