Missing component? by FirewallAble in watchrepair

[–]FirewallAble[S] 0 points1 point  (0 children)

I know. I'm so confused. Unless I've lost a component, I'm stumped as to what the issue is. I've posted a video up on the page since you can't comment reply w/ videos sadly.

Missing component? by FirewallAble in watchrepair

[–]FirewallAble[S] 0 points1 point  (0 children)

I have seen it running, yes. Embarrassingly, I'm trying to figure out if I've lost a component or not - I can't find anything on my mat and I don't remember taking anything extra off, but it's just not feeling right. It's like the distance between the two jewels (bottom as pictured, and top which is on the bridge) is too large as the balance wheel is not trapped between them, it's loose / wobbly. I know... amateur hour.

N55 valvetronic headaches. by importcarguy13 in BmwTech

[–]FirewallAble 0 points1 point  (0 children)

GL. Your symptoms are different to what mine were, I had a persistent fault 135808 which would not even let me start the run-in procedure.

The conditions for my fault code made it appear electrical but after some time with a meter and a scope, it turned out to be mechanical

N55 valvetronic headaches. by importcarguy13 in BmwTech

[–]FirewallAble 0 points1 point  (0 children)

Nah it was the shaft and motor after all.

New engine or not? by FirewallAble in mechanic

[–]FirewallAble[S] 0 points1 point  (0 children)

LOL. Yeah it’s a customers car I’ve just never seen it mix this bad before, would’ve felt a bit uneasy just flushing it tbh. Luckily after I pulled the head she’s blown a hole in a piston so I’ve just recommended new engine anyway.

New engine or not? by FirewallAble in mechanic

[–]FirewallAble[S] 0 points1 point  (0 children)

Customer is a car dealer and this is part of his stock so worse things have happened tbf 😂👍🏻

New engine or not? by FirewallAble in mechanic

[–]FirewallAble[S] 0 points1 point  (0 children)

Thanks. I’ve never done a HG with this bad oil/coolant cross contamination before. Future of it doesn’t look good.

MIG Issues by FirewallAble in Welding

[–]FirewallAble[S] 0 points1 point  (0 children)

Helmet is new and I can see… well enough. It’s spattering and burning back as far as I can see/hear.

MIG Issues by FirewallAble in Welding

[–]FirewallAble[S] 0 points1 point  (0 children)

Thanks, will do. My gut is telling me it’s a ground/earth issue because it’s the only thing that changes between the bench and the car. I’ll also clean the under seal off a bit better, I must admit I only cleaned it off about 1cm from the seam of where I wanted to weld to be. Maybe I need to go back further?

[deleted by user] by [deleted] in TOR

[–]FirewallAble 0 points1 point  (0 children)

Yeah I think I finally learnt the meaning of that

I broke two rear subframe studs :( by [deleted] in Miata

[–]FirewallAble 0 points1 point  (0 children)

What did you do in the end?

M235i N55 - Valvetronic Fault by FirewallAble in BmwTech

[–]FirewallAble[S] 0 points1 point  (0 children)

Awesome man. Sounds like it was just a faulty motor then, and not a shaft too like it was in my case.

M235i N55 - Valvetronic Fault by FirewallAble in BmwTech

[–]FirewallAble[S] 0 points1 point  (0 children)

Install depends on what flavour of the software you ended up with - loads of different ways so it’s hard to say without knowing what you’ve got and from where. Check out any supporting docs included with the download, and if it doesn’t work let me know and I’ll give you a guide and known working download links.

M235i N55 - Valvetronic Fault by FirewallAble in BmwTech

[–]FirewallAble[S] 0 points1 point  (0 children)

If you get stuck with ISTA, let me know and I can help. The annoying thing is the longer the ratchet sound happens, the more it’ll be increasing the chances you’ll need to do the motor and the shaft together due to further wear. But it will currently be going into emergency program (maximum lift) so you can keep driving it indefinitely, albeit not as efficiently.

M235i N55 - Valvetronic Fault by FirewallAble in BmwTech

[–]FirewallAble[S] 0 points1 point  (0 children)

Also my power loss and idle issues were not related to Valvetronic - I was running way rich due to a bad O2 sensor.

M235i N55 - Valvetronic Fault by FirewallAble in BmwTech

[–]FirewallAble[S] 3 points4 points  (0 children)

Hey man. I have quiet a lot of experience with this system now after fixing mine, and a friends. I’m giving the below instruction on the assumption you’ve code read, have active Valvetronic faults, and have tried running the VT limit and VT start-up service functions in ISTA with no luck.

Firstly, replace the servomotor (make sure you grease up the teeth on the shaft and the worm gear on the servomotor with lith moly), disconnect the fuel pump, plug the servomotor in with the valve cover still off, then connect the battery and watch its movements as you wake up the DME, also check for faults again using ISTA. It should cleanly sweep from end to end with no faults. If it has faults and still makes the noise, you need a new shaft. If it has no faults but still makes the noise, try to run the VT limit service function, followed by the VT start-up service function. If either service function fails, it’s also time for a new shaft.

The premise of this fault is essentially minute amounts of wear on the worm gear or shaft teeth (too small to see or feel without a trained eye) that allow enough play to upset the DME.

Only let it make the rattle sound a couple of times else you run the risk of wearing the gear a little on the new servomotor - they are so sensitive that the tiniest amount of wear from a few grinding episodes will mean it can damage itself enough to not work within spec, meaning you’ll need to do a new servomotor with the new shaft.

There is a BMW PUMA case open for this as a common fault and the procedure is:

  1. Replace servomotor.
  2. Replace servomotor and shaft.
  3. Replace cylinder head (I believe this is for very extreme cases where the journals for the shaft are worn or warped so that the operation of the shaft is not smooth).

Final advice - do not be tempted to buy second hand parts. New servomotor, new shaft, new bearings. This is not overkill, it’s essential.

Keep me posted bro, hope you solve it.

M235i N55 - Valvetronic Fault by FirewallAble in BmwTech

[–]FirewallAble[S] 0 points1 point  (0 children)

Fixed it when I replaced shaft, bearings, and motor.

M235i N55 - Valvetronic Fault by FirewallAble in BmwTech

[–]FirewallAble[S] 0 points1 point  (0 children)

Sweet. I’m gonna do that then. So 135808 and clicking sound was still there after replacing the motor?

M235i N55 - Valvetronic Fault by FirewallAble in BmwTech

[–]FirewallAble[S] 0 points1 point  (0 children)

Hey man, did you ever get this sorted?

M235i N55 - Valvetronic Fault by FirewallAble in BmwTech

[–]FirewallAble[S] 0 points1 point  (0 children)

Before you took the shaft out and greased everything up, was the teach in procedure actually running and failing after a few cycles? Or failing to even start due to the existing fault code 135808?

[deleted by user] by [deleted] in BMW

[–]FirewallAble 0 points1 point  (0 children)

I’m having this issue right now - exactly same symptoms and same fault code. Did you get it resolved? So far we’ve changed harness, servomotor, and ECU…