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2014+ AFM (Active Fuel Management)

Ron.s

By Ron.s
in Engines & Drivetrain

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iCryWheniGoPoop Enthusiast

iCryWheniGoPoop

Posted
Posted (edited)

Dejavu? LOL

 

Well.. there is a lot more to it than that so instead of me typing it all... here you go.

 

If there is anything in particular that you have questions about, let me know and I will try to help explain it.

post-127545-0-13340800-1394998893_thumb.jpg

post-127545-0-13340800-1394998893_thumb.jpg

post-127545-0-13340800-1394998893_thumb.jpg

post-127545-0-13340800-1394998893_thumb.jpg

Edited by iCryWheniGoPoop
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oldmann
oldmann

Why are people so concerned about this topic. I do not understand it. Just drive it. End of story. And yes, even if you can't figure out why the truck has it, it is to save fuel.

pm26
pm26

No, it does not. Not even close. The only Cadillacs that possibly exceeded the weight of 2014 GM crew cab 1500 4x4 pickups were the old land yachts (1976 and older) models. I believe that a 1976 Ca

seamonster
seamonster

Whats up with the name calling?   Cant you see we agree----the AFM feels like a gear shift!   Many people want 6 and 8 speed tranny and then complain they can feel AFM. That is what I dont unders

Posted Images

iCryWheniGoPoop Enthusiast

iCryWheniGoPoop

Posted
Posted

Ok... once you look at that picture real good.... that is everything it takes just to activate DOD. Just imagine what it takes to move that new 2014 truck down the road.

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

My truck only goes into V4 in sixth gear. In town I keep my truck in m5 so it never goes into V4. I'm going by sound and dash .

 

 

Sent from my iPhone using Tapatalk

iCryWheniGoPoop Enthusiast

iCryWheniGoPoop

Posted
Posted

This is correct... If you look at the Pic I attached you will see a green column labeled DOD Disable Vs. PRNDL. Everything is disabled except Drive (drive is not an option)

Gears when in drive can actually be selected in the table just below that one.

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

I'm a simple man, you spent the man hours learning to tune and understand the brains of the computers of these trucks. I am stuck back in the carb, msd days.

 

 

Sent from my iPhone using Tapatalk

iCryWheniGoPoop Enthusiast

iCryWheniGoPoop

Posted
Posted (edited)

I'm a simple man, you spent the man hours learning to tune and understand the brains of the computers of these trucks. I am stuck back in the carb, msd days. Sent from my iPhone using Tapatalk

 

LOL... I was just like you until I spent a hand full of times hanging out with Ed Wright. After witnessing the VooDoo he could do with LT1/LT4's I was instantly sold on Fuel Injection and Custom Tuning. I will admit that my background in Electrical Engineering/ Automation and Controls didn't hurt though.

 

Your dilemma with in town DOD can be tuned out though, I have mine set to come on after 55 mph.

Edited by iCryWheniGoPoop
KARNUT Senior Enthusiast

KARNUT

Posted
Posted

Well I been around long enough to recognize someone who knows their stuff. Hate to put that pressure on you.

 

 

Sent from my iPhone using Tapatalk

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

Open the exhaust you will know. I don't mind it, I already been told Im weird.

fondupot Senior Enthusiast

fondupot

Posted
Posted (edited)

I'm not familiar with the work truck dash cluster, so I can't help. Sorry. But from another thread, it looks like you cannot.

Edited by fondupot
iCryWheniGoPoop Enthusiast

iCryWheniGoPoop

Posted
Posted (edited)

That just goes to show how seamless this V4 is. It is very hard to tell with stock exhaust and no indicator when the AFM/DOD/V4 is activated.

 

Don't despair though.... there is a way...

Tools Needed - Vehicle ramps or jack stands.2 pry bars, wd40 or similar spray lubricant, common hand tools, sawzall w/sharp blade, friend or friends, enough beer for you and your friend/friends.

 

1. Drive vehicle up onto ramps or use jackstands so that you have enough room to roll around underneath your truck (caution - do not drive vehicle up onto jackstands)

2. Place a sawzall with sharp blade carefully just behind the Y-pipe and pull the trigger until the back half of the exhaust is completely separated from the Y-pipe.

3. Carefully spray WD40 onto rubber hangers so that they can be dismantled with ease, being careful not to subject yours or your loved ones eyes to the slippery mist.

4. Using pry bars, gently start prying rubber pipe hangers from hooks. (this can be aggravating and is where the beer starts helping.)

5. During this part.... Tell your friends you are going in for more beer and to take a quick leak, making sure that all your tools are left behind just incase you have real good friends who will continue working on your car while you actually go inside and sit on your ass.

6. Come back outside acting like you must have eaten something bad because you were stuck in the crapper for the last 30 minutes then act really shocked when you see your cat back laying in the driveway.

7. grab some old ear plugs, ear muffs or an old ice pick to rip your ear drums out for item number (8)

8. Go drive your new truck with AFM indicator.

 

Steve

Edited by iCryWheniGoPoop
  • Like 1
fondupot Senior Enthusiast

fondupot

Posted
Posted

That just goes to show how seamless this V4 is. It is very hard to tell with stock exhaust and no indicator when the AFM/DOD/V4 is activated.

 

Don't despair though.... there is a way...

Tools Needed - Vehicle ramps or jack stands.2 pry bars, wd40 or similar spray lubricant, common hand tools, sawzall w/sharp blade, friend or friends, enough beer for you and your friend/friends.

 

1. Drive vehicle up onto ramps or use jackstands so that you have enough room to roll around underneath your truck (caution - do not drive vehicle up onto jackstands)

2. Place a sawzall with sharp blade carefully just behind the Y-pipe and pull the trigger until the back half of the exhaust is completely separated from the Y-pipe.

3. Carefully spray WD40 onto rubber hangers so that they can be dismantled with ease, being careful not to subject yours or your loved ones eyes to the slippery mist.

4. Using pry bars, gently start prying rubber pipe hangers from hooks. (this can be aggravating and is where the beer starts helping.)

5. During this part.... Tell your friends you are going in for more beer and to take a quick leak, making sure that all your tools are left behind just incase you have real good friends who will continue working on your car while you actually go inside and sit on your ass.

6. Come back outside acting like you must have eaten something bad because you were stuck in the crapper for the last 30 minutes then act really shocked when you see your cat back laying in the driveway.

7. grab some old ear plugs, ear muffs or an old ice pick to rip your ear drums out for item number (8)

8. Go drive your new truck with AFM indicator.

 

Steve

 

heh.

bigsapper Enthusiast

bigsapper

Posted
Posted

 

I'm a simple man, you spent the man hours learning to tune and understand the brains of the computers of these trucks. I am stuck back in the carb, msd days. Sent from my iPhone using Tapatalk

 

 

 

LOL... I was just like you until I spent a hand full of times hanging out with Ed Wright. After witnessing the VooDoo he could do with LT1/LT4's I was instantly sold on Fuel Injection and Custom Tuning. I will admit that my background in Electrical Engineering/ Automation and Controls didn't hurt though.

 

Your dilemma with in town DOD can be tuned out though, I have mine set to come on after 55 mph.

 

Ed Wright, huh? Do you hang out on Class Racer?

iCryWheniGoPoop Enthusiast

iCryWheniGoPoop

Posted
Posted

No sir... I haven't spoken to him but a handful of times in the last 8-10 years, especially since he went into partial retirement. I hung out on OORA and green country forums a lot, then got hooked on the road circuit and beat the crap out of a few cars in BMWCCA, ended up twisting one up and went back to something safer, SuperMoto! The last couple years I have built a few turbo cars and got the drag bug again so here I am, learning what I can from some of these guys so I can get back up to speed.

bigsapper Enthusiast

bigsapper

Posted
Posted
No sir... I haven't spoken to him but a handful of times in the last 8-10 years, especially since he went into partial retirement. I hung out on OORA and green country forums a lot, then got hooked on the road circuit and beat the crap out of a few cars in BMWCCA, ended up twisting one up and went back to something safer, SuperMoto! The last couple years I have built a few turbo cars and got the drag bug again so here I am, learning what I can from some of these guys so I can get back up to speed.

 

lol. I caught the drag racing bug again last year after being away a few decades. Came across ClassRacer.com and noticed he posts there quite a bit.

 

Its a shame whats happening to the sport; but class racing is where its at theses days IMHO.

 

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