E70 30d - Throttle Body Fault
 

Hi All,

ISTA+ states

00483D DDE: Throttle Actuator

I had a feeling it was fluffed because the engine shakes on shut off, my question is though, why do some Throttle Bodies (like my E90) have a spring which you can see move with the valve and some like what's on this E70 just have a cap..

My plan is to just chuck on the one from my E90 but I wanted to check what the differences are, realoem states the throttle body is also found on the E90.

This is the one on my E90 with the spring
https://i.imgur.com/r0MY9Uc.jpeg

And this is the capped off one which is on the E70
https://i.imgur.com/DNvE5cG.jpeg

Perhaps the throttle valve on your E70 has already been replaced with some after market alternative, not OEM/Pierburg.

It stuck out because it looked very clean, which is why I thought it was strange to not work. Anyhow took the one off my E90 and it's perfect! Started off with 24 ISTA+ Fault codes and now down to 3 after everything I've done. Still intrigued to know why one has a spring and the other doesn't.

The E90 is a diesel, I assume? I mean, the valve is full open 99% of the time. It shuts only during engine shutdown briefly, in a runaway situation, and otherwise trims air input during regeneration post-fueling. I guess a spring that holds it open is okay. The one I replaced in my X5 seemed direct driven, no springiness at all and I hear it reposition open after the engine has stopped, a few seconds later. Maybe it was a later part change. My X5 is a late 2011 LCI model.

Yes my E90 is a 330d with the M57n2 engine so almost any parts I need I can just grab them off my E90 including that throttle body. I heard that the throttle body is required for regeneration and if I recall correctly my soot was mid 40's and the glow plugs and coolant temp was fine but throttle body fault was stored which I why I reckon the soor has accumulated.

The car was fully serviced today and will have some new tyres and an alignment done tomorrow. Only then can I put it on the motorway to try and get a regen, if not I'll have to request one as I believe mid 40's is quite high.

Soot mass.in the 40s is extremely high. I'm usually around 4g but it depends on the last regeneration. Ash mass has accumulated to 67g. Of course, these are all calculated values.

Mine had the spring, as did the Pierburg replacement sourced from FCP Euro. Replaced Mine about nine months ago..

Don't Forget to get a new O-Ring and Charge Hose Seals..

Lord have mersy, I took it to the alignment place today after getting my new tyres which where showing threads and its either coincidence or the car was making my gear shifts higher up in which I now think was it preparing to get to a DPF regeneration.. As I pulled onto the alignment shop it was smoking, but not like my last video.. It was lots and while I was waiting for it to clear up a bit before putting it onto the ramps I couldn't help but think.. S**t, is that even dying down?... It was an anxious 15 mins for sure, but it died down. Couldn't have the alignment done either as they said car needs to run for the duration due to the electronic parking brake.

If its in fact really high at 40+ soot I think the cars trying to prep a regen which is not what I need right now!

I'm now contemplating removing absolutely everything again (intake, Injectors and valve cover) and removing as much residual oil as possible or removing air filter, then the 3 rubber grommets to show the exhaust manifold and blast a ton of brake cleaner.. But is it perfectly safe to do a ton of brake cleaner down by the exhaust, will it all evaporate leaving nothing combustible.

You can see all the pics and videos on my other thread here:

https://xoutpost.com/bmw-sav-forums/...-burn-off.html

I would just take it for a good drive at a decent clip for as long as I can manage. The brake cleaner will clean some of it. The rest it will liquefy and then it will run into crevices and cracks and crannies and might end up somewhere safe or somewhere worse.

Not sure what the alignment shop's concern regarding the parking brake is. The difference between engine on and off is the way the parking brake is applied. Hydraulically and using all four of the pads and rotors with the engine on or only the rear wheels via shoes internal the rear rotor hats or by a motor clamping the rear calipers with the engine off.

Yeah I may give it a go, I also went to the car and got some DPF stats from Carly. I'm 90% sure the soot value was 46/47g now it's 34.25, is it possible at town City granny driving it did one of those smaller active regens? And backpressure looks like it's going to pop my valve cover

https://i.imgur.com/TId6kHw.png

https://i.imgur.com/jI3LkOK.png