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Ecoboost Issues

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by paracutin, May 15, 2013.

  1. paracutin

    paracutin New Member

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    #1
  2. McClintoc

    McClintoc Super Moderator

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    But GM went with Active Fuel Management and lots of those egines have died...
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  3. stchman

    stchman New Member

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    It is a matter of time that twin turbo engines start giving their owners problems.

    How many AFM engines have died of the ~4 million made since 2007? 300, 400, 1000? Can all those engine deaths be attributed to AFM killing it? If AFM on the 5.3L and 6.2L engine was such a bad thing, GM would have discontinued it.
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  4. Conlan Rose

    Conlan Rose Super Moderator

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    AFM has only caused slight to major oil consumption issues not any other issues. Ford Twin turbos have had problems like setting fire to themselves and almost killing owners which is much worse than needing to check your oil more often and top it off.
    #4
  5. stchman

    stchman New Member

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    I good friend of mine owns a repair shop and has said that in his experience if an AFM engine owner uses synthetic oil, their oil consumption goes down dramatically. I imagine AFM oil consumption is one of the reasons GM mandates their customers to use dexOS approved oil.
    #5
  6. shibby2oo8

    shibby2oo8 New Member

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    I still dont feel like turbo technology has come far enough to have reliable longevity to it. All those VW turbos only last to around 70-75k tops around here. Then ford says "we dont just have 1 but TWIN TURBOS!", i would hate to own one once the warranty stops cuz thats gonna be a second mortgage on the house to fix.
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  7. paracutin

    paracutin New Member

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    I have never owned a diesel truck but all modern diesel trucks are turbo charged. Any issues with the turbos?
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  8. stchman

    stchman New Member

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    The Duramax diesel engine is turbo charges, and it has IIRC a two stage turbo charger.
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  9. shibby2oo8

    shibby2oo8 New Member

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    The new ones are vari-vane set ups that adjust boost by pitch of the vanes. They have more of a prob with the vanes getting carboned up and not moving anymore. The diesel turbos are biult better since a bad turbo can cause a runaway if oil get past the seals but they still need changed out often. My old boss had a 07 cummins that started making noise at 30k miles but i dont work there anymore.
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  10. steved

    steved Former Member

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    No problems on the standard old mechanical diesel turbo...but the newer variable geometry turbos and the electronically controlled variants have some problems time to time. I had 200k and 275k on my last two Cummins (respectively) and my father has 300k on his Cummins without issue...and I wasn't easy on the last truck.

    One thing to keep in mind regarding turbos...they take an oil specified for turbo engines. Pretty much every diesel on the road today is turbocharged, and the oil for a turbo diesel is a lot more stout than an oil for a gasoline engine, and not all gasoline engine oils are turbo-rated. If you get the wrong oil, it might not fail right then, but it takes time of the useful life of the turbo.

    Turbos on gasoline engines have been around a long time...look at the Grand National and GNX, they were turbo charged V6s and were probably the hottest car in their heyday. Some of the Subarus are turbo charged (my Forester is one), and they typically only have turbo problems if the owner neglects oil changes and the oil passages plug from oil coking. My Forester gets 20mpg in town and 26mpg+ on the highway...and is one nasty little sleeper (its light, the turbo spools quick, and all wheel drive).

    - - - Updated - - -

    FWIW: I have driven the Ford Escape with the 2.0L Ecoboost...very similar in size to my Forester. It netted me 35mpg+ on the highway and had plenty of zip. Ford's got a good idea with the turbo-charged cars, just bad implementations (hey, every manufacturer gets a bad run of parts or has issues in the first couple model years).

    The one that really gets me is the F150 with the EB3.5L, there is an application that screams fail to me every time I see one...that's working the engine pretty hard to maintain the power of a comparable V8.
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  11. txdutt

    txdutt New Member

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    Let's see so far with the "Eco-Bust" complaints: faulty fuel injection harnesses, intercooler causing condensation in the intake making the trucks go into limp mode & now the shake-rattle & role lawsuit...had doubts about turbocharging the Pi$$ out of a little 3.5 V6 achieving any longevity in a full size pickup...no thanks!
    #11
  12. tbplus10

    tbplus10 Moderator

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    Im not sure how many actually know the history of Turbo Charging.
    The first Turbo Charger was patented in 1905 and from the 20's through WWII was used extensively and very succesfully to boost performance on aircraft engines.
    The first automobile passenger car use was 1962 with the Oldsmobile Jetfire option on the 1962-1963 F85/Cutlass 215 CI V8 and the 1962-1964 Corvair Monza Spyder flat 6 engine.
    As far as technology the basic turbo has been in use for a long time and has proven reliability, its the hybrid versions that have issues, variable geometry turbos have proven to be the most problematic versions, while they work well at maintaining a constant backpressure through the engines rpms a reliable mechanism for vane geometry has been hard to develop.
    #12
  13. phoebeisis

    phoebeisis New Member

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    TB
    Yes remember that Corvair Turbo very well.
    Buddy of mine had one-and he-stupidly-let me drive it
    I/we would intentionally toss it around the corners-shell and gravel roads streets-just to get the tail to hang out
    like I was some kind of racer.
    Not as if it was tough to get it to come around-and back then-there wre little ditches on both sides of all the streets
    wouldn't flipped that sucker and killed our stupid selves!!
    Fun little car-dangerous-and its fan belt-would COME OFF- not break- but come off- and being air cooled-it would heat up really fast!!
    cHARLIE
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  14. shibby2oo8

    shibby2oo8 New Member

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    I think i may have used the wrong words, in design turbos are good but normally the execution ends up with low qaulity bearings and seals and poor tolerances so most production turbos lack longevity with is why i do not like them.
    #14
  15. phoebeisis

    phoebeisis New Member

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    The factory turbo craze from the late 1970's- mid 80's soured folks on turbos.
    They were supposed to give big engine performance-small engine mpg
    but they actually gave at best-good 4 cyl performance-with V-6 economy.
    and they BROKE- cooked/coked THE OIL did in their expensive turbos.
    Ford and Dodge put them in cars-4 cal-on pitiful Mustang I remember-and a "Shelby" something or other Dodge(150 hp I think)-GM of course used them less-and in the 6's as performance boosters-can't remember any GM turbo 4's.

    This time turbos will work better-GM uses them PLENTY in their 1.4 cal to get decent performance-great mpg
    Pretty sure the Cruze 1.4 turbo with a 6 speed MT is rated 42 mpg hy-pretty good!!
    They won't have the reliability problems they had 30 years ago

    Now the dual turbo 3.5 V-6 seems awfully complicated-looked great for a while-but now that GM has beaten its MPG- with a primitive 5.3 pushrod V-8 it doesn't look quite as good.
    I expect Ford will respond-and beat the 5.3 MPG wise-"somehow"
    Never would have guessed the 5.3 could get 23 mpg EPA HY in a pickup-never.
    The 23 mpg means actual 25 mpg trips at 65 mph.Minivan MPG from 5-8 years ago from a blocky V-8 1/2 ton-amazing.
    My primitive 98 Suburban gets 21 mpg hy on long-3000 mile trips-but that is at 62-63 mph or less
    #15
  16. shibby2oo8

    shibby2oo8 New Member

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    I do like those new cruze eco's and they have good power for such a small engine. They should put a light on the dash to tell you when to shut the engine off so the turbo can cool off at idle like you are supposed to.
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  17. steved

    steved Former Member

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    The Grand National and/or GNX seemed like a pretty viable combination of V6 and turbo charger that GM put together...I want to remember it was quicker than the Corvette of the same time period. A girl I worked for back in college had four of GNs, and a mint GNX (as in less than 20 miles on the clock, and #5 in production of only 2000 cars IIRC); the one was a street/strip drag car and was ignorant for a V6.

    Again, a lot of the "failures" of turbo chargers stems from incorrect/poor oil being used. Turbos require a turbo approved oil, or the life expectancy of the turbo is greatly impacted.

    As for the issues the current EcoBoosts are having, that goes for any and all manufacturers that try something different...they all have bugs that need worked out in the beginning. I doubt there is a single car made that didn't have some sort of issues that needed sorted out.
    #17
  18. phoebeisis

    phoebeisis New Member

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    That Buicck Grand National must have been some sort of RINGER car
    Because it was only rated at 250-290 hp-but it ran much much faster than that.
    At least that is my memory of claimed hp
    Hey she had 4- and you didn't marry her??
    #18
  19. steved

    steved Former Member

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    She was already spoken for...
    #19
  20. phoebeisis

    phoebeisis New Member

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    Bet she was!!
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