04-01-2019, 03:04 PM | #23 | |
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04-01-2019, 04:54 PM | #24 |
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Drives: F30
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Location: Stevenson, WA
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04-28-2019, 06:50 PM | #25 |
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Hey all -
Just wanted to give a quick update. After the initial repair, when the timing chain issue happened, BMW acknowledged it and since my car was just outside of warranty, they (fortunately) covered my repairs! I feel very fortunate to say that I did not have to pay for the timing chain repairs (initially quoted to almost $11K) - Instead I just paid for Eccentric shaft and accentuator replacement). So even if I had to pay big money, it feels like losing a finger is better than losing an arm? lol. Anyhow- Just wanted to keep you all informed. |
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05-13-2019, 09:05 PM | #26 |
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Hey there, I'm having the same issue. Do you happen to have the part number or what is actually covered by the 80k mile warranty? Thanks!
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06-12-2019, 11:18 PM | #27 |
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Hey Guys,
Do you think an issue with valvetronic could create issues with down change rev matching in a 335i e92 DCT? Does valvetronic have anything to do with rev matching? We can hear the down changes and the abnormal sound that comes "rev match" in the video. Car also experience rough throttle response at idle, especially when cold. This code has come about.. Fault Code: 002E10 Fault Explanation: Valvetronic system: deactivated warning threshold deviation too often exceeded And this one along time ago and has never come back.. 0x2DCE - The diagnostic function monitors the Valvetronic system's control precision. https://youtu.be/XKOxtV2mrEE |
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06-15-2019, 07:40 AM | #28 | |
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07-09-2019, 09:14 AM | #30 |
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Valvetronic literally has everything to do with rev matching in an N55. The N52, N55 - all of the Valvetronic motors - will happily run without an intake manifold. Throttle is controlled via valve lift. The throttle body in these motors is simply a failsafe for when the valvetronic motor fails.
The N55 has the third revision of Valvetronic and is even faster than the N52. If the gear is unable to rotate the shaft properly or at the right speed, rev-matching will not occur properly. If the Valvetronic motor fully fails, the car will use the throttle body as a failsafe. The valves will either stay in whatever state of lift they were in when Valvetronic last functioned properly, or they will increase to maximum lift.
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08-13-2019, 09:36 PM | #31 |
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Hmm wonder if a rebuilt vehicule would work..
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12-05-2019, 11:03 AM | #32 | ||||||
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I just got this valvetronic error on my 2013 n55 as well. Have you guys noticed that WE ALL HAVE 2013's.... this cannot be a coincidence.
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12-05-2019, 04:23 PM | #33 | |||||||
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Here's some interesting reading. https://bmwtechnician.com/?s=Eccentric
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12-05-2019, 05:40 PM | #34 | |
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12-07-2019, 12:04 PM | #35 | ||
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12-09-2019, 01:32 PM | #36 | |||
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But iv been changing every 7.5k.miles and using Castrol european formula 0w 40 for past three years
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12-09-2019, 07:59 PM | #37 | |||||
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I inspected the teeth on my eccentric shaft and it looked fine besides normal wear on the inside. Nothing was chipped. The worm gear looked to have wear and I hear since the sensor is in the motor they tend to go out. I'm having the motor replaced first, finger crossed I won't have to change the shaft
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12-31-2019, 08:22 PM | #39 |
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Previous owner of my car had the same issue, 2013 335 xdrive, at 80k miles, they replace the whole head with a new one as the camshaft and camshaft seat on the head were also damaged. 11k bill lol
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01-04-2020, 07:35 PM | #40 | ||
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I ended up replacing the eccentric shaft, servomotor, and all need bearing on the shaft and did the VCG gasket replacement out the door for 3.2K, motor and shaft cost 1.5k just for parts FML was shitty moment since my entire year bonus went straight to that expense but shes running perfect now. on a little note, i flashed to bm3 and its way better than jb4. hopefully she lasts another 50k miles.
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02-18-2020, 03:41 PM | #41 |
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I was having some issues with rough idling, misfiring and almost stalling while on the highway. I downloaded ISTA+ and saw Valvetronic codes. I let ISTA+ run it’s diagnostic procedures and it ended up recalibrating the sensors. It seems to have solve the issue. I’m going to keep an eye on it. Hope that info helps someone.
I have a 2012 f30 n55 with 81k miles. |
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02-25-2020, 02:25 PM | #42 | |
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Good luck. |
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03-07-2021, 01:59 AM | #44 |
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Sorry for bumping this thread but since I just did this repair and the eccentric shaft I give some advice. I used these videos for the installation:
You must put the eccentric shaft in the maximum lift position after installation. I learned the hard way. Also when I used ISTA D to activate the valvetronic motor I did not have enough voltage. You need a little more than 13 volts. It didn't work until I got 13.3 volts on my multimeter. A battery charger won't work. You need a voltage stabilizer. I built a DIY version since a retail version is at least $500 or more. https://f80.bimmerpost.com/forums/sh....php?t=1262137 Using 2 HP 2 DPS600PB at 13.6 volts, I barely got 13.3 volts when I hooked it up to my car. If I bumped the voltage any higher on the HP's, they would go into self protect and shut off. I actually had to use my battery charger and the 2 HP's to get it to work. I was praying it wouldn't damage the computer doing this so I recommend something better. When I finally got ISTA D to work it went through 160 cycles with car running. Car will sound like it's stalling as it cycles but that is normal. Then 20 cycles with the ignition off, and finally 3 cycles to learn the limit positions. |
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