[gbalthrop]

Originally Posted by jadams161

I'm still confused as to how they reused the VC bolts since they are aluminum torque to yield. Every repair done on a BMW requires you to replace a bolt...BMW cutting corners and not wanting to do it correctly. I'll probably have a VC gasket leak days after the warranty is over on this repair.

Aluminum TTY bolts are ONLY REQUIRED to be used where the bolt contacts Magnesium Alloy, as Steel corrodes Magnesium. The cylinder head is Aluminum, NOT Magnesium Alloy. So Steel (re-usable) bolts are used to hold Valve Cover to Aluminum Head. Simple use of a Magnet will confirm Steel Bolt.

The CRANKCASE or block is Magnesium Alloy. So Oil Sump bolts which go into the Magnesium Alloy are Aluminum TTY. Same for bolts holding Aluminum Head to Magnesium Alloy Crankcase (Aluminum TTY).

Early E9x models, Pre-2007, used Magnesium Alloy Valve cover. Those engines require aluminum bolts to prevent corrosion of Magnesium VC, as I understand it.

Steel bolts/screws are NOT TTY & may be re-used. Use magnet to confirm if bolt is steel. Also, Blue paint MAY identify an aluminum TTY bolt.

Further confusing the issue is the fact that many parts suppliers sell Kit for VC replacement with new bolts. ISTA does NOT suggest replacement of any bolt OTHER than Aluminum TTY. The ISTA AZD Torque Spec clearly provides for "Replace Screw", as well as TTY angle, IF an Aluminum Bolt. A call to your BMW Parts Counter SHOULD confirm that. Don't ask an SA.
George

[bigretic]

Originally Posted by gbalthrop

The Invoice states:

"found the intake vanos adjustor to have loose bolts. the new adjustor is ordered no eta on arrival. car pushed out side."

It appears that per the recall procedure (at least in CA), same as in 2014 RCRIT:
1) If any loose or broken bolt(s) are found on inspection, VANOS Unit on that cam is to be replaced;
2) Dealer did NOT have VANOS Unit on hand, and had to ORDER;
3) ALL 8 VANOS bolts (4 per cam) replaced;
4) Exhaust VANOS Unit NOT replaced, as NO original bolts were broken/loose.

NOT Stated in Invoice:
Whether only ONE bolt at a time was replaced in Exhaust VANOS. That is clearly required in 2014 RCRIT. If someone would take the time to identify the parts (by part#) listed on invoice and determine if any R-CRIT requires replacement of each part listed, that would be helpful.

ANYONE in US who has VANOS Bolt Recall performed, PLEASE ASK FOR COPY or URL for any RCRIT for Recall 23V-707 (2023 recall). If they state, IN WRITING, that 2014 RCRIT is followed, that's OK.
George

https://static.nhtsa.gov/odi/rcl/202...3V707-2875.pdf

Not sure if anyone posted this update. My car is in the shop now, shop foreman gave me some b.s. that they were fishing the broken bolts out from the top and didn't need to drop the oil pan.

[TekkaMaki]

Just found that the cabin air filter housing in my engine bay is broken a couple weeks after recall work was done. Don't want to deal with the dealership, (1 1/2 hours away) just ordered a new one on FCP euro. The plastic was probably brittle...

Wish they would have at least told me they broke it.

[Three_thirty_I]

Okay, so my 2010 330i M is booked in for next Monday afternoon, hopefully no nasty surprises. I am also going have them fit a new eccentric shaft sensor while the valve cover is off - there is some traces of oil in the plug which is either from a leaking gasket, or the sensor itself, can't seem to figure which. Will update during and after all of this is done.

[krhodes1]

I had an appointment for yesterday at 7:30am for this recall, the airbag recall, and an annual state inspection.

Dropped my wagon off the day before, as 7:30am is before my beauty sleep ends. They checked it in yesterday morning, I got the status tracking e-mail with lots of pictures of my car around 9:30am. Today it has updated to "Your Review Needed Soon", and not complete. It's now 5:30pm so they have had the car two full days. No big deal, I have lots of cars but seems odd for what is a somewhat time-consuming but ultimately simple job. Hoping I get the bonus plan of needing the oil pan to come off, but with only 55K miles and no obvious signs of trouble I doubt I will get that lucky.

Just hoping it's done by Friday, as Sunday I was planning to take it to a car show that the local BMWCCA chapter is attending.

[krhodes1]

Turns out, we had a failure to communicate - the dealer had my work desk phone as my cell phone, and had been texting to it to tell me the car was done.

All set though, no loose/sheared bolts, they did the spark plugs along the way for the price of the plugs , and inspecticated to keep the state happy for another year. And conveniently, since it sat in storage all summer, the inspection is now due at the END of the summer rather than my having to rush around to get it done as soon as I get back in Maine for the summer. Bonus plan.

And my car does not have a Takata grenade airbag, as they did that recall inspection too. She's ramped and stamped and ready to go to sleep for another winter. I put a mighty 1240 miles on since the last inspection in July 2023.

[Three_thirty_I]

So, my car was booked in this afternoon for this recall, and I have supplied a new Eccentric Shaft Sensor to be fitted as preventative maintenance since I have spotted some oil in the plug. Hopefully no snags, and I have asked them to keep me updated and send pics if possible. Will update when I hear anything!

[GoogleHomePod]

Haven’t heard much from my service advisor but I was able to get a loaner while they fix my car it’s been about a week since I heard anything

[Three_thirty_I]

Originally Posted by GoogleHomePod

Haven’t heard much from my service advisor but I was able to get a loaner while they fix my car it’s been about a week since I heard anything

Wow, I would definitely push them for updates, especially if they've possibly run into issues! Hope you can get an update soon!

[GoogleHomePod]

Got my car back on the 25th car drove fine, I didn’t drive Thursday cause I was off but today I drove it to work and when I parked there was smoke coming out the hood and I looked, coolant everywhere and it’s leaking right now I guess I’m taking it back 🫤

[mattanderson]

Doh! That sucks, good luck!

[lordnikon]

Originally Posted by GoogleHomePod

Haven’t heard much from my service advisor but I was able to get a loaner while they fix my car it’s been about a week since I heard anything

Wow a week. My dealer took about 6 hours and I got the car back on the same day.

[Salzamani]

Originally Posted by Three_thirty_I

So, my car was booked in this afternoon for this recall, and I have supplied a new Eccentric Shaft Sensor to be fitted as preventative maintenance since I have spotted some oil in the plug. Hopefully no snags, and I have asked them to keep me updated and send pics if possible. Will update when I hear anything!

Any updates? Did you get that new eccentric shaft sensor installed while they were in there? Did that make much of a difference in the steady idle(not jumping around). Where did you buy that ESS? What did it cost?

[lordnikon]

Originally Posted by Salzamani

Any updates? Did you get that new eccentric shaft sensor installed while they were in there? Did that make much of a difference in the steady idle(not jumping around). Where did you buy that ESS? What did it cost?

https://www.fcpeuro.com/products/bmw...ic-11377524879

[Three_thirty_I]

Sorry guys, been meaning to update, and actually still need to drive the car more since getting it back end of last week. They had discovered that some of the bolts on the intake Vanos adjuster were ever so slightly loose, so they had to order a new Vanos adjuster, so the car was with them most of the week. Only thing I am concerned about is that the valvetrain has an ever so slight ticking sound compared to how it was before being worked on. I haven't been able to speak to the tech that worked on my car, but will try and make contact with him next week and possibly take it to him to listen to. I took two videos with my cellphone to try and pick it up, it's most noticeable from a distance away and from inside the car. Anyone else experience this? I am wondering if them having to replace the intake Vanos adjuster if things removed weren't put back in their exact original position, not sure...

Originally Posted by Salzamani

Any updates? Did you get that new eccentric shaft sensor installed while they were in there? Did that make much of a difference in the steady idle(not jumping around). Where did you buy that ESS? What did it cost?

I bought a Continental (VDO/Siemens) Eccentric Shaft sensor from a spares place locally, almost 30% cheaper than the basically identical part from the agents. I must still drive the car more, but so far it has been faultless with regards to idle and throttle behavior!

[Salzamani]

@three_thirty_i

I bought a Continental (VDO/Siemens) Eccentric Shaft sensor from a spares place locally, almost 30% cheaper than the basically identical part from the agents. I must still drive the car more, but so far it has been faultless with regards to idle and throttle behavior![/QUOTE]


Did you have a rough idle prior to the work done? How many miles on the car? Was it the original Eccentric Shaft sensor?

[Three_thirty_I]

Originally Posted by Salzamani

@three_thirty_i

I bought a Continental (VDO/Siemens) Eccentric Shaft sensor from a spares place locally, almost 30% cheaper than the basically identical part from the agents. I must still drive the car more, but so far it has been faultless with regards to idle and throttle behavior!

Did you have a rough idle prior to the work done? How many miles on the car? Was it the original Eccentric Shaft sensor?[/QUOTE]

I bought this car at the beginning of the year, and the previous owner had not been using the car much for a while, so just after I bought the car I would experience a rough idle at cold start that would settle after a few seconds. It persisted for a while, but as I drove the car more and more it became less regular. I also then pulled things apart and checked the eccentric shaft sensor plug, and at that point I spotted what looked like a pinhead sized blob of oil, so I considered a future replacement of the sensor. I have also been running the car on a few tanks of fuel with a good injector cleaner and that's probably also helped in general, but, whenever the car was parked on an inclined driveway for a while, there would be a pronounced rough and bouncy idle for a few seconds. So when I discovered that my car was part of this recall, it made sense to replace the sensor, and then I inspected it about a month or so ago, this time it was swimming in oil - I mostly suspect the gasket failed, but these things are so prone to fracturing and leaking from inside the valve cover. The car is currently sitting on just over 113k km.

[Salzamani]

@Three_thirty_i

My rough idle only happens when engine is warm and been sitting for a few min. Idles just fine when cold(sitting over night) seems to be the opposite of everyone else. Yeah I think you’re right while they are in there to perform the recall I might as well supply them with the Essentric Shaft Sensor from FCP. I sometimes can feel something is grinding on and off with the engine at idle. I’m hoping it is those bolts that are causing the issue and the recall remedies that. I did the oil pan gasket myself 9 months ago and didn’t see anything unusual in the pan like metal shaving or head of screws or anything. Fingers crossed this fixes the issues.

[Three_thirty_I]

Originally Posted by Salzamani

@Three_thirty_i

My rough idle only happens when engine is warm and been sitting for a few min. Idles just fine when cold(sitting over night) seems to be the opposite of everyone else. Yeah I think you’re right while they are in there to perform the recall I might as well supply them with the Essentric Shaft Sensor from FCP. I sometimes can feel something is grinding on and off with the engine at idle. I’m hoping it is those bolts that are causing the issue and the recall remedies that. I did the oil pan gasket myself 9 months ago and didn’t see anything unusual in the pan like metal shaving or head of screws or anything. Fingers crossed this fixes the issues.

I am only now noticing that you have a 335i, so that brings its own set of problems. One good way to rule out a rough idle caused by an eccentric shaft sensor is to run the engine with the sensor unplugged and force it to run in safe mode with the throttle body active and no Valvetronic influence.

[Salzamani]

Originally Posted by Three_thirty_I

I am only now noticing that you have a 335i, so that brings its own set of problems. One good way to rule out a rough idle caused by an eccentric shaft sensor is to run the engine with the sensor unplugged and force it to run in safe mode with the throttle body active and no Valvetronic influence.

No I need to update my car info. I now own a 2011 E92 328i Manual. Ok so what you’re saying is to just unplug the ESS and run the car. So in my case when the issue is only present and even that is only sometimes not always is when the engine is warm and only sitting off for a short while so I should unplug it those situations and see if there is no rough idle and of course I would probably need to do this several times before I can assume and draw a conclusion that the ESS is likely to be bad. Do I understand that correctly?

[Three_thirty_I]

Originally Posted by Salzamani

No I need to update my car info. I now own a 2011 E92 328i Manual. Ok so what you’re saying is to just unplug the ESS and run the car. So in my case when the issue is only present and even that is only sometimes not always is when the engine is warm and only sitting off for a short while so I should unplug it those situations and see if there is no rough idle and of course I would probably need to do this several times before I can assume and draw a conclusion that the ESS is likely to be bad. Do I understand that correctly?

Okay, now I understand. In that case yes, if you disconnect the eccentric shaft sensor, it will then run the engine in a safe mode without the Valvetronic throttle control and revert to purely the throttle body. This will of course store an error, but that's fine. Engine performance and throttle feel will also be different, but the idea is to see if the rough idle persists - if it does, then it's something else, but if it doesn't, then it's most likely the eccentric shaft sensor.

[Salzamani]

Originally Posted by Three_thirty_I

Okay, now I understand. In that case yes, if you disconnect the eccentric shaft sensor, it will then run the engine in a safe mode without the Valvetronic throttle control and revert to purely the throttle body. This will of course store an error, but that's fine. Engine performance and throttle feel will also be different, but the idea is to see if the rough idle persists - if it does, then it's something else, but if it doesn't, then it's most likely the eccentric shaft sensor.

Roger that 👍🏼

Thanks for taking the time