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What to do about VE V8 AFM Issues?

Discussion in 'VE Holden Commodore (2006 - 2013)' started by rickyc12s, Jan 24, 2018.

  1. rickyc12s

    rickyc12s New Member

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    Hi All,

    Just bought myself a 2009 VE Calais V on the cheap because it had an engine light, turns out it's a misfire on cylinder 7 which I'm fairly certain is related to the AFM/Valve lifter.

    I've switched the coil packs around and same cylinder plus the issue stops with a good 4k neutral rev for a while, also seems the back of the car is covered in oil (literally just bought it so haven't washed it)

    So just wondering what the best option was, I don't care about 'economy' so was thinking just ditch the AFM system all together - Can this be done without removing the hardware?

    Current train of thought was do a CAI, Exhaust and tune including ditching the AFM either software only or hardware to (possibly different cams?)
     
  2. monstar

    monstar Naturally as-pirated

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    Gotta take it out by heads off and overhaul, new normal lifters, LS2 valley plate.
    Else future proof with later stuff by heads off and overhaul, new AFM lifters, L77 valley plate.
    Same really.
    Either way is a good opportunity to shave a bit off heads, swap cam for an easy extra 100-150 HP. CAI and exhaust are less significant.

    Would love to see a video before you fix it, sounds interesting.
     
  3. RiCeY

    RiCeY F O R U M W A R R I O R

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    Pop the rocker cover off and see if the rockers are all moving, AFM lifters have a tendency to collapse and the rocker arm wont move if it has failed.
     
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  4. rickyc12s

    rickyc12s New Member

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    Thanks for the advice Monstar, I'm still sussing options but wouldn't mind keeping the AFM tech as I do alot of HWY driving.

    I'll pop the rocker sometime soon hopefully.

    Just a couple of updates, the car runs fine about 80% of the time and goes in and out of 4 cylinder mode but doesn't seem to go into 4cyl mode very often. When the engine light comes on and it detects the misfire the engine light flashes until the misfire stops then the engine light goes solid before putting itself out a short time later.

    I pulled the spark plug from cylinder 7 today and it looked completely normal, put a new one in and engine light came back - Also changed the oil at the same time with Penrite 5W-30 HPR.

    Uploaded a couple of videos, first is when it is misfiring second is when it runs fine.



     
  5. rickyc12s

    rickyc12s New Member

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    So I've confirmed without a doubt that the lifter is completely flapped! I'll get another video but it sounds 100x worse then ever and intermittent misfire has turned into 100% of the time misfire. So next step is to fix it and I'm hoping for a parts list?

    So far I believe I'll need:

    AFM Lifters x 8 (GM genuine)
    Standard Lifters x 8 (GM genuine)
    Lifter guides x 4
    Head gaskets x 2
    Head bolt set x 1
    Intake gaskets x 2
    Exhaust gaskets x 2

    Not sure what else?
     
  6. monstar

    monstar Naturally as-pirated

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    Ricky theres been a few significant improvements to the AFM components over the years, there was a problem identified with the lifters themselves also the Lifter Oil Manifold Assembly.
    Here's the latest lifters

    versus
    DOD20Lifters-2_.jpg
    and correct LOMA is L77 2011+ with the squared-off raised ridges not the roundy style you have.
    Go GM head gaskets, bolt set, reuse intake seal.
     
  7. rickyc12s

    rickyc12s New Member

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    Got the rockers off today, video below of cylinder 7 rocker play. Safe to say that's my problem.

     
  8. monstar

    monstar Naturally as-pirated

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    Yep you were right from the start, that’d be it.
     
  9. rickyc12s

    rickyc12s New Member

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    Would you happen to have the part numbers for the lifters and the LOMA? I'm seeing a few different types of each and almost everything has to come from the USA to be economically viable.
     
  10. monstar

    monstar Naturally as-pirated

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    Latest AFM lifter part number in the video I posted above.
    AFM lifter failure is caused by faulty LOMA (VLOM) operation. Updated VLOM# 12571609 from GM must be installed with new lifter to prevent future failures and maintain warranty coverage. This costs about $200, eliminates the previous risk with incorrect AFM engagement, and essential when upgrading to a supercharger or performance cam.
     
  11. Chris76

    Chris76 New Member

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    Hi Guys. Rickyc12s thanks for posting the videos and starting this thread. Glad I saw it Ive got the same problem with a 2010 Calais V L76. Any recommendations for a decent workshop in Brisbane/Capalaba to fix? As its stock I figure I might as well have a OTR and performance tune done at the same time what do you guys recommend and what should I budget for? I have had one quote and the shop recommended I delete the AFM/DoD but I'd prefer to keep it. Also the car has had servicing performed over its lifetime but its done 250km any other recommendations or potential issues I should look for?
     
  12. rickyc12s

    rickyc12s New Member

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    Hi Chris, you can get the DOD delete kit for about $730 from ebay which has everything except the camshaft, camshaft seems to be about another $600-700 + the tune on top of that so a DOD delete was looking around 2k + labor (my guess is another $600-800 labor). So if you did go a delete I would be budgeting about $3,000-$3,500 including OTR

    I decided to keep the AFM and have ordered revised VLOM ($320) and AFM lifters ($560) as well as replacement LS7 lifters ($140), trays ($80), exhaust gaskets ($65), head gaskets ($160) and head bolts ($65) all in for about $1,400 and maybe a $100 or so more for a head shave if needed.

    At the end of the day the deciding factor for me to keep rather then delete was the amount of highway driving I do, the fact that I can do all this myself without needing to go get the AFM turned off and a cam tuned in the ECU and the future-proof ability of the revised AFM bits allowing me to do performance upgrades anyway later on if I so choose.
     
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  13. monstar

    monstar Naturally as-pirated

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    @rickyc12s where did you get 8x AFM lifters (12645725) for AU$560?
     
  14. rickyc12s

    rickyc12s New Member

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  15. monstar

    monstar Naturally as-pirated

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    :eek: Zupps Aspley were around $1500 quote for all lifters by memory...

    Yeah my package price for 8x units from US was same, but shipping and import was $152.65. That was using the automated eBay shipping and import service through Pittney Bowes. Bloody stings that!
     
  16. Chris76

    Chris76 New Member

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    Thanks rickyc12s. Thanks Monstar. I appreciate your help. I'm leaning towards keeping the AFM, I do a bit of highway driving as well.
     
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  17. Buckd1ch

    Buckd1ch Member

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    Talk to james at bayside performance in cleveland mate. Wont let anyone else touch my car. Hes very good
     
  18. Chris76

    Chris76 New Member

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    Thanks Buckd1ch will. Appreciate the advice.
     
  19. rickyc12s

    rickyc12s New Member

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    So just to update, got everything back together today and after missing the main ground wire couldn't get it started. Turns out it isn't getting fuel, bypassed the fuel relay and she fired up no worries and seems to run smoothly but no matter what I try the fuel won't pump without bypassing the relay.

    Just to clarify it doesn't prime or anything
     
  20. monstar

    monstar Naturally as-pirated

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    Seems like ECU commanded fuel cut because of a fault, what code is coming up?
     

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