Jump to content

V4 mode

Gagliano7

Recommended Posts

Gagliano7 Enthusiast

Gagliano7

Posted
  • Author
Posted
19 hours ago, Grumpy Bear said:

What's a fella to do with a thread like this? :rolleyes:

 

I'm counted as one of the number of 6L80E owners who runs and loves AFM. Over 85K miles and have never had a harsh shift, up or down. Mistimed shift. Not a clunk one. Never get a 'chopper' sound out of her. Seems to anticipate the need for the absolute correct gear in any mode. D, M5, Tow/Haul, grade decent on or off. 110 F or -35F, it just works and both the transmission and the AFM are absolutely invisible. Part of the reason for installing the Scan Gauge II was to see if the AFM was even working and to let me know what gear I was in.

 

That said there are a fair number who count themselves in the other camp who have all manor of issues. That should tell you something right there and yet this lesson gets lost on almost everyone who has a problem. Why it that? Seriously, why is that?

 

This set up is capable of flawless operation. IF yours is not, get the **** thing fixed!  

 

 

Never going back to V4 mode and truck drives flawlessly in V8 mode. I will bring it in if it breaks but since it is a lease i will live with it for 2 more years and gladly turn it in. The truck is great but i have a feeling it will be really expensive to fix down the road. 

  • Replies 39
  • Created
  • Last Reply
Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted

LOVE the belt comment....ROTFLMAO. 

 

I remember these sorts of concerns when hydraulic lifters fist came into the picture. Then the roof came off with roller tappets and an atomic blast was felt with hydro-rollers introduction. That was Race Only with no place in a grocery getter. We should have stopped with chilled white iron mushroom flat tappet systems! All these others are WAY to complicated. To heavy. Require to much spring pressure. Beats seats out. Valve/rocker breakers. To many moving parts. To many ways to fail. Lord my father and his brothers and brother-in-laws would sit around Uncle Bob's kitchen table and go to war over it. Should have heard my Dad when I bought my first Honda VVT.....:rolleyes: 

 

C'mon guys, you remember those battles....You likely participated in a few yourself. :P

 

Tell ya what. IF and it's a BIG if; I ever decide to disable my AFM it will be with a cam and lifter kit at rebuild time. IF complexity is the reason to disable it, then just eliminate it altogether. K.I.S.S. Just say' n. A Range doesn't simplify anything. Just removes opportunity for ONE failure mode. If as SS502 says, it might be a 'material issue'.... I just might at rebuild time. Hope they have something better than plastic guide trays by then, eh? 

 

Hey, anyone up for a Nova 396 and a Powerglide? There's simple. (and fun) :) 

KARNUT Senior Enthusiast

KARNUT

Posted
Posted
LOVE the belt comment....ROTFLMAO. 
 
I remember these sorts of concerns when hydraulic lifters fist came into the picture. Then the roof came off with roller tappets and an atomic blast was felt with hydro-rollers introduction. That was Race Only with no place in a grocery getter. We should have stopped with chilled white iron mushroom flat tappet systems! All these others are WAY to complicated. To heavy. Require to much spring pressure. Beats seats out. Valve/rocker breakers. To many moving parts. To many ways to fail. Lord my father and his brothers and brother-in-laws would sit around Uncle Bob's kitchen table and go to war over it. Should have heard my Dad when I bought my first Honda VVT.....:rolleyes: 
 
C'mon guys, you remember those battles....You likely participated in a few yourself. [emoji14]
 
Tell ya what. IF and it's a BIG if; I ever decide to disable my AFM it will be with a cam and lifter kit at rebuild time. IF complexity is the reason to disable it, then just eliminate it altogether. K.I.S.S. Just say' n. A Range doesn't simplify anything. Just removes opportunity for ONE failure mode. If as SS502 says, it might be a 'material issue'.... I just might at rebuild time. Hope they have something better than plastic guide trays by then, eh? 
 
Hey, anyone up for a Nova 396 and a Powerglide? There's simple. (and fun) [emoji4] 

I had a 66 442. It had a power glide. My buddy had a 75 trans-am. My brother had a 75 grand Torino elite. They couldn’t touch the olds.


Sent from my iPhone using Tapatalk
SS502 Senior Enthusiast

SS502

Posted
Posted
19 minutes ago, Grumpy Bear said:

LOVE the belt comment....ROTFLMAO. 

 

I remember these sorts of concerns when hydraulic lifters fist came into the picture. Then the roof came off with roller tappets and an atomic blast was felt with hydro-rollers introduction. That was Race Only with no place in a grocery getter. We should have stopped with chilled white iron mushroom flat tappet systems! All these others are WAY to complicated. To heavy. Require to much spring pressure. Beats seats out. Valve/rocker breakers. To many moving parts. To many ways to fail. Lord my father and his brothers and brother-in-laws would sit around Uncle Bob's kitchen table and go to war over it. Should have heard my Dad when I bought my first Honda VVT.....:rolleyes: 

 

C'mon guys, you remember those battles....You likely participated in a few yourself. :P

 

Tell ya what. IF and it's a BIG if; I ever decide to disable my AFM it will be with a cam and lifter kit at rebuild time. IF complexity is the reason to disable it, then just eliminate it altogether. K.I.S.S. Just say' n. A Range doesn't simplify anything. Just removes opportunity for ONE failure mode. If as SS502 says, it might be a 'material issue'.... I just might at rebuild time. Hope they have something better than plastic guide trays by then, eh? 

 

Hey, anyone up for a Nova 396 and a Powerglide? There's simple. (and fun) :) 

Ehhh, honestly sometimes the truth hurts :(

My plan...post warranty :)

Heck yeah...would LOVE one :thumbs:

AtlasFBG2 Enthusiast

AtlasFBG2

Posted
Posted
On 2/14/2019 at 3:44 PM, jagabom said:

I can sense mine on my 2017 -  4.3 - V6 going into V4 mode cause it starts to shudder.  I think torque converter.

Jim

My 4.3 had a shudder also. It went away when I changed to a MBRP exhaust. I am pretty sure it was the exhaust flapper valve that caused the shudder in v4.

 

I have tried the Range device, a Superchips tuner and a Hypertech tuner. With v4 enabled I only got about .5 MPG increase in fuel economy. My truck will rarely go into v4 mode and stay in it above 35 mph.

 

Just curious if any other 4.3 v6 owners see v4 mode above 35mph much??

 

 

 

 

Fuelie Enthusiast

Fuelie

Posted
Posted

This forum seems to be sensitive to GM transmissions being clunky.... My wife has a 16 Toyota Camry that has a clunky transmission sometimes, I rent cars for work a lot, it seems like most of them do not have a consistent smooth shifting tranny.

My 2018 LTZ is a little clunky at times but just like my 17 it never gives me any trouble.

I think it's just the world we live in :D, I have yet to have a GM transmission failure and I go thru a lot of trucks.

I think a lot of people just need something to pick on to make them feel good.

The sky is falling :rolleyes:

Tom

Donstar Senior Enthusiast

Donstar

Posted
Posted
21 hours ago, AtlasFBG2 said:

My 4.3 had a shudder also. It went away when I changed to a MBRP exhaust. I am pretty sure it was the exhaust flapper valve that caused the shudder in v4.

 

I have tried the Range device, a Superchips tuner and a Hypertech tuner. With v4 enabled I only got about .5 MPG increase in fuel economy. My truck will rarely go into v4 mode and stay in it above 35 mph.

 

Just curious if any other 4.3 v6 owners see v4 mode above 35mph much??

 

 

 

 

Yes, I see V4 light up often while at highway speeds.  I find that optimal mpg occurs around the 60 mph range.  When cruising at 70+ mph fuel economy drops and V4 mode isn't as common to appear.  

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
22 hours ago, AtlasFBG2 said:

My 4.3 had a shudder also. It went away when I changed to a MBRP exhaust. I am pretty sure it was the exhaust flapper valve that caused the shudder in v4.

 

I have tried the Range device, a Superchips tuner and a Hypertech tuner. With v4 enabled I only got about .5 MPG increase in fuel economy. My truck will rarely go into v4 mode and stay in it above 35 mph.

 

Just curious if any other 4.3 v6 owners see v4 mode above 35mph much??

Weather dependent, yes. Pepper will stay in 4 cylinder mode most of the trip on a light wind warm day right up to 55 mph. My preferred speed and has added about 10% to my live time fuel economy. In the winter or on windy days it's hardly on at all. It is a load dependent device. 

  • 3 weeks later...
Bob985 Enthusiast

Bob985

Posted
Posted

My v4 lights up quite a bit when im on the freeway also. Seems kind of weird

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.6k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    343,007
    Total Members
    8,960
    Most Online
    Brendan C
    Newest Member
    Brendan C
    Joined

  • Who's Online   3 Members, 0 Anonymous, 1,137 Guests (See full list)

  • Latest Articles

  • Posts

    • Z45
      2026 6.6 L5P oil cooler leaking oil at 4,000 miles

      By Z45 · Posted

      The oil filter has NOTHING To do with oil leak. GM sources parts from 1,000's of vendors and as with anything mass produced, flaws are unavoidable.    Putting a larger oil filter will do nothing but satisfy emotions. The OEM filter is designed for the engine and perfectly capable of handling the demands on the engine. Oversize oil filter could result in reduced flow and overall lower oil pressure.
    • Grumpy Bear
      Joke Thread

      By Grumpy Bear · Posted

    • Grumpy Bear
      The Peckish Synapse

      By Grumpy Bear · Posted

      You're better read than that Atlas. 😏   British science fiction writer Arthur C. Clarke formulated three adages that are known as Clarke's three laws, of which the third law – that "any sufficiently advanced technology is indistinguishable from magic" – is the best known and most widely cited.   Stribeck and the pivotable Hersey Number isn't voodoo nor snake oil. That part is physics. It's what marketing and bean counters do with it that is snake oil and voodoo.    Stribeck is the relationship between Hersey and the Coefficient of Friction. Within the Hersey Equation if viscosity and viscosity is 'Dependent' on.......heat.......and.......viscosity index or the temperature to viscosity slope.    Specifically Hersey is the viscosity AT THE TEMPERATURE IN THAT LOCATION FOR THAT SLOPE.   Hydrodynamic lubrication exist when the film thickness in the location is 3X the Ra roughness of the surface. This is irrespective of the hardness of the substrate. To obtain that thickness X viscosity is required for Y velocity at Z load. That's a lot of moving parts. It is also impossible to maintain in an ICE but nearly possible with a turbine under constant load.    What does that mean? Error heavy and operate light. Wear is inevitable but the rate of wear and the milage obtainable are a function of prevailing conditions and HABITS. The only penalty is viscous drag and at fractions so low as to be well worth the effort. Double the life, half the manufacturing carbon foot print. Greed is the only impediment.    The materials generated by SwRI are the RESULT not an estimation or a hypothesis.    Don't delude yourself sir, EV's have as many pitfalls as ICE's. We just don't know what they are yet and it will take longer to sort as MARKETING and GREEDY CEO's have had more time to polish the turd they are selling. 
    • Grumpy Bear
      The Peckish Synapse

      By Grumpy Bear · Posted

      You can always count on greed to prey on ignorance and stupidity.    Friend bought a 2019 Ford Flex and asked me about using Valvoline R&P 5W30 in it. Told him give the miles on it and the fact it wasn't yet using oil that it was a good plan. He uses a Valvoline quick change shop for his oil service.   First they tell him that isn't the oil the OEM recommends. He told them he didn't care what the OEM thought. Then they floated the, "But it will void your warranty"    His reply was it's a 2019, there is no warranty and informed them their knowledge of the law was lacking.    Then they tell him 'But it will ruin your motor"!.    Mine to ruin he says. Finally they give in and charge him 150% the semi-syn price    Point it the brainwash is so embedded that even the service industry is drunk on their swill. The public is right behind them. Echoing the same lies on every forum and media platform. If the end goal is indeed EV then I'd say that ship is about built. 
    • CamGTP
      Gas Prices

      By CamGTP · Posted

      Diesel hit $6.00 here today at the truck stop.   Payed $2.79 for E85 today too.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...