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BMW 3-Series (E90 E92) Forum
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Need Immediate Help! VANOS recall leading to additional charges.
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10-08-2024, 09:27 PM | #23 |
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Words of wisdom there doit659!
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10-08-2024, 10:35 PM | #24 |
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Well, I am not arguing with you. I understand your approach.
I was speculating on why BMW would suggest the procedure is to drop the oil pan, which is their recommended procedure for the recall. Actually, I have a question for you. I have watched videos of guys rebuilding BMW engines and they are like surgeons not wanting a piece of lint polluting the engine. How can some VANOS bolts shear off and drop all the way down to the oil pan and not rip up the engine, especially the cam shafts? I would think random pieces of bolt heads whipping off the VANOS would damage the engine before they fell into the oil pan. Also, how possibly could those bolt heads travel from the valve cover down to the oil pan? |
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10-08-2024, 10:51 PM | #25 | |
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10-08-2024, 10:58 PM | #26 |
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Ok, that's all good information which I didn't know.
But why don't these bolts shearing off, even if aluminum, tear up the engine on their way down to the oil pan? Are they just softer metal than the camshaft, manifolds, etc.? |
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10-09-2024, 07:22 AM | #27 |
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Had a similar scenario when my parents took their diesel X3 in to get the NOX sensors replaced under warranty, in the process they broke the SCR metering valve and refused to cover it and then wanted $1k to fix it when I did it myself for about $200 in parts and about 30 minutes of labor.
The funny thing is that the service advisor was like "the SCR metering valve is nowhere near where we did the work" even though the metering valve is right next to one of the NOX sensors and it's obvious that the tech broke it while he was in the area. No big deal, it's old plastic, shit happens, but I don't know why they refused to cover it and then tried to lie to us about it being their fault. My dad told me that the two service advisors there said that he should just get a new X3 instead of trying to keep this one going even though he's put 40k miles on it (122k now) with nothing but oil changes and brakes and some recall/warranty work with the emissions system. Anyway, I was derailing the thread, my buddy had a Duralast axle on his 328xi put in by the previous owner and when he tried to remove it when he was replacing his engine he had an absolute bitch of a time doing so. So to me, it's believable that the aftermarket axle is harder to get off than the OEM stuff. However, I think that this is due to the lock ring being different on the aftermarket axle and nothing to do with the splines themselves. After my buddy removed the axle, he popped a used GKN one on there and had 0 issues afterwards, so I think that your diff is fine. There's also this thread where the OP had issues with aftermarket axles: https://www.e90post.com/forums/showthread.php?t=1770569 |
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StradaRedlands6233.00 |
10-12-2024, 03:16 AM | #28 |
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Ah, thanks, that explains it. I never knew the bolts were aluminum. My 2006 E90 was not part of the recall, so I never looked into cause of the failure. I always thought it was the bolts backed out and the heads sheared off.
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10-12-2024, 08:40 PM | #29 |
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The Vanos bolts are steel. I found that out when removing the vanos gears to extract the other broken bolt issue in the vicinity; the aluminum "head" aka rocker cover bolts. The heads on these bolts would leave a bad taste in the engine's mouth if it was to try to chew one. There are the ones I pulled, they are TTY so have to be replaced, but they're steel.
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10-12-2024, 09:09 PM | #30 | |
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10-12-2024, 09:13 PM | #31 |
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Oh, NVM then lol. What bolts are being replaced? I wasn't subject to the recall, these are the bolts that hold on the vanos gears tho.
Edit: I found the service bulletin, I see it's the smaller bolts holding the actuator together. https://static.nhtsa.gov/odi/rcl/201...4V176-2716.pdf Thankfully this is one of the defects the early engines didn't suffer from. Last edited by 3PedalJake; 10-12-2024 at 10:45 PM.. |
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charges, help here, help me, issues, recall |
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