should i be concerned??

Nice weather...so went over my bmw 525i 94 touring auto
Last week at the mot place, the guy gave me a can of carb cleaner so today i took off the plastic to get to the butterfly. he said open the butterfly,
spray the stuff around and clean off with a toothbrush...
I did that, got out lots of black gunk...started it seem fine
I just had to nip to the docs, it cut out a few times at the lights, so i put it in N with a few revs to keep it going(v long light seq) i put it back into D then it said trasm problem and was stuck in third i guess..( i was moving a bit).i got to the docs, with it stalling a couple times, say from D into R to park, and again when i came out....5 minutes later.
This time no trans problem popped up on display and this time i had kickdown etc etc no problem, pulls all the way through the rev band
no this is my first auto, so i panic what to do when it stalls...
i did try while going down the hill (steep) i put it in N (as i wanted to rev it a lot, to clear blast out any crap left in) but it stalled, so i had no power steering or brakes, so i put it into D at low speed...is that ok? i know your not suposed to (or it lets you) go into R or P
I leave for Germany in 48 hours, i got home ok, left it running a few minutes and all seemed fine in N or P just running...maybe its when i braking or coming to a stop, so it should be at tick over (or in N and i rev it, when it comes back down it feels like it wants to stall, then comes back up to normal tick over)
now im worried...any thoughts v much app!! ta
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I would be (concerned).
If it ran fine before that then you might have knocked off a vacuum hose or something I guess but I don't think there's really much *to* knock off. Did you replace the rubber hose between the throttle body and airbox?! I'm guessing it didn't run fine before then otherwise why the carb cleaner?
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wrote:

the car ran fine before....about once a week or v rare it had a bad tick over, actually it happend that day so they said it, its fine for ages...they said that would be the build up around the butterfly, they just said take a can and spray and clean off the gunk.
nothing knocked off...
I have just been for a spin, to fill up and noticed this
when im in traffic, so i let it crawl its fine...the problem seems the v split second i add a bit of power, it can cut out then.not good if i need to look at junctions etc.if i give more power, it gets past the dip and is fine, pulls and changes fine...
im used to old simple 70's cars, nothing fancy just nice n simple.
i think i will take it back off and give it a clean around the butterfly
no more probs with led or display saying trans problem, it just changed fine when i floored it.
on a ligher note, i had a the tiny little bulb go for a couple of weeks, so it failed on that (the bulb on a v long stalk about main bulb) anyway i changed it so it passed, but now (never before while out) that the buld has failed, sometimes it pops up....crazy

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I would suspect a problem is brewing in the area of the Mass air flow sensor...
Nick
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No offence, but from your posts, you don't give the impression you know what you are doing.
My suggestion is to take it to someone who does. I am not being nasty BTW, but would you attempt to fix you gas or electricity on your house yourself if you didn't know what you were doing?

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