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Lv3 and afm

WranglerMike

By WranglerMike
in Engines & Drivetrain

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WranglerMike Enthusiast

WranglerMike

Posted
Posted

On my 2014 lv3 4.6ltr. I apparently have the afm dropping from 6 to 4 cyl.Most vehicales put there that have this afm system have either a button or an indicator somwhere that lets you know when afm is active.My truck I had no clue it has it as it has no indicators telling the operatoor its in afm.Should it be dropping 2 cyl at cruising speed? I have been told it drops 2 at idle but not 100% sure.

It is a 2014 silverado wt with a 6cyl lv3 engine.Anyone have the same truck/engine with afm.

(I am actually quite impressed with the 6 cyl in this ext cab 5.6 box.)It has hauled many dodges.

 

 

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted

I have the 2015 WT with the LV3 and 6L80E. 282 K kilometers of trouble-free AFM operation. No, it does not drop cylinders at idle. It is a load-based system with a time limit. Yes, at road speed IF the load is small enough. Most effective between 65 and 100 kph. 

 

If you have the WT too then there isn't a DIC display for it, but you can watch it by using Linear Logic's Scan Gauge II or III or Torque Pro. HP Tunner or the like. I use the Scan-Gauge II system. 

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WranglerMike Enthusiast

WranglerMike

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Posted (edited)

Thanks for the reply.Good to know.

Never had any issues with the AFM but just wanted some insight on it.Was never surr if mine had it at all until i had a oil pump put in by a buddy this week.

The only issue I have had is the oil pump.2nd engine(First pump took out the engine then GM raplaced) 3rd oil pump with 183000 on the truck

 

Edited by WranglerMike
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