Quote:
Originally Posted by @Art_Mighty
Is the ECU flash solving the problem, or simply covering it up? And if it does solve the issue for some, why doesn't it for others? Why is Toyota insisting on the on the Cam Gear Replacement in some cases? What is actually killing the Cam Gear? If it's just the ECU then they would be recalling all of the cars, or at the minimum putting out a TSB to get everyone's ECU changed to the correct versions?
There's too many outcomes for me to be as optimistic as you are. Still, the point you make about this becoming a self inflicted torture of sorts, there's a truth to that.
This reinforces for me something I forgot but already knew; companies only allow us to buy or use a product but we really have no legal right to understand what's inside. CompanyX won't tell you anything about the inner-workings of their products. The system works this way so that CompanyX can protect itself against it's competitors, at the same time it also protects CompanyX from us.
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I am not sure that the ECU IS the end-all fix, but it's what I'm led to believe following the various threads. I
am the eternal optimist, but only because it keeps me looking forward. I've been bitten by the paranoia bug many times, (2005 WRX glass tranny, 2004 STi wheel bearings, 2006 Evo MR 4th gear, 2008 STI piston ring lands) only to have it come up fruitless every single time. Believe it or not, the STI ring lands was "fixed" by an ECU update recall. It had something to do with how the fuel cut was managed at the rev limiter... Anyways, I have read from the "Subaru BRZ forum" that the cam gear is picking up debris, causing it (or the control valve) to jam, which dorks up the valve timing, causing idle to dip too low for too long, causing the ECU to raise the little yellow flag.
I am 100% with you in that I consider more information to be better information, "we have a right to know" regardless of it's implications, but I am also doubtful we'll actually get it due to corporate NDA's and proprietary data, etc. At the very least we can continue to keep each other updated and report our experiences, hopefully to the extent of trending and even root cause. If anything, we will probably get more info from word of mouth from techs who are actually working with the repairs.