12-27-2017, 05:21 PM | #43 |
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The entire thing lives bathed in oil. If you feel the crunchies, the only cure is to clean out the crunchies.
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12-27-2017, 09:35 PM | #44 |
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Well the cam sprocket actuators did not feel horrible. I wouldn’t say they were perfectly smooth either. When pushing slightly to one side and allowing to come out it felt like it was dragging on faint machining marks. Anyway, does anyone have the correct Subaru part number for the “updated” intake cam sprockets? Maybe also the orings and stuff needed for the job too?
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12-27-2017, 10:11 PM | #46 |
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Yup. That's it.
In my case while I played with the plungers, at first I felt complete interference. Then when I broke through that, I felt the machine mark crunchiness. After exercising a bit, the crunchiness went away completely. The second time, we removed the OCV just so I could play with the valve. It was again crunchy and cleared up after playing with it. Unless you observed the same machine-mark binding on the good valve (You did test a good one for reference, right?) I believe your issue is rooted in physical contamination of the VVT mechanism.
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12-28-2017, 09:28 AM | #47 | |
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What a shit show. --- Update --- So I spoke to the tech that worked on my car.. He did swap the sensors and the OCV, but wasn't able to resolve it with that method. They're going to go ahead with the sprocket change and I'm hoping Subaru Canada will help cover some of the costs of the repair (being 4 months out of powertrain warranty), but I'm not holding my breath. Last edited by precurse; 12-28-2017 at 11:12 AM. |
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12-28-2017, 11:40 AM | #48 | |
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According to this post, http://www.ft86club.com/forums/showp...59&postcount=4 the immobilizer won't allow the engine to start if the key ID stored in the ECM doesn't match. If the sprocket change doesn't resolve, then I'll need to look into a new ECM.. But I don't want to dish out $100 on an ECM if there's a chance it's tied to a completely different key fob that I don't have. Last edited by precurse; 12-28-2017 at 11:58 AM. |
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12-28-2017, 12:11 PM | #49 | |
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http://www.ft86club.com/forums/showthread.php?t=102810 |
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The Following User Says Thank You to EigenGuy For This Useful Post: | Ultramaroon (12-28-2017) |
12-28-2017, 02:55 PM | #50 | |
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This first sentence is way off base. It's what happens when the manufacturer defines a troubleshooting process based strictly on cost. I'm surprised that Subaru still struggles with these because the more experienced mechanics have seen the same issue in previous boxer engines. Then again, like Tcoat often says, we only discuss the disasters here. Nobody posts about their wonderful, painless experiences. :/
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12-28-2017, 05:14 PM | #51 | |
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There's nothing I've neglected about maintenance and even had a Used Oil Analysis done this past summer which came up perfect. Then the service manager tried to pin this issue on maintenance neglect, even with UOA, filter and oil purchases all documented. Sigh... Fingers crossed that the sprocket change fixes it.. Should be hearing from them any time now. |
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12-28-2017, 05:47 PM | #52 | |
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12-28-2017, 06:05 PM | #53 | |
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$1200 later, the CEL is still throwing up a P0016 code. The actual tech mentioned that he spoke with Subaru tech line and they insisted the ECU didn't need to be changed with the camshaft sprocket. One of the service guys claims that the ECU always needs to be changed with the sprocket change, which I find pretty stupid if true. The Subaru tech line is off for the week, so he could only gather data to send to them next Tuesday. As per the TSB, however, I think they're just going to suggest an ECU replacement. |
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12-28-2017, 06:13 PM | #54 | |
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12-28-2017, 06:44 PM | #55 | |
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I hope that would be taken into account but can just as easily picture it being changed on purpose as part of a broader improvement in the encoder circuit.
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12-28-2017, 08:15 PM | #56 |
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Read through the TSBs again. A few things.
1. The flow chart in 02-132-12 makes sense. I had seen it but stepped through it for the first time just now. I think there is a typo in the title because p0016 is discussed in the body of the document. I retract my statement about the instructions being written according to cost. Don't remember how I came to that conclusion in the first place but I'm over it. ~~~edit 20180120~~~ yeah, this might be wrong too. The ECU may still need to be replaced for other reasons. 2. If a sprocket assembly is replaced with another of the same part number, there is no need to replace the ECU. 3. I don't know if it's possible to replace the early sprocket with a later "improved" one, but if it can be done, it may explain the argument about whether or not the ECU must be swapped with the sprocket(s).
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