Jnelson1182

ok so i changed disa and for the most part all the issues i was having went away, but there still is some slight hesitation on acceleration and it just dont feel like the car is getting to its top speed nor as fast as it should, granted it is only a 525i i am taking that into account on my observation, ive posted pics of inpa values at idle with engine im pretty sure warm enoughq along with any codes its thrown since then, any help would be greatly appriciated, so far the car is running a lot better than it was yesterday tho so i can only imagine how its going to feel when i finally get everything right

Jnelson1182

i have a few more screens but for some reason it wouldnt let me add them onto post so if theres another that maybe be better at helping issue lmk and ill see if i have it if not ill got hook up car and get it

Jnelson1182

more inpa shots

seanjordan20

Why do you need to change O2 sensors are you getting a code for them. All you numbers look good

Jnelson1182

so a lil bit back i had a rpm fluctuation issue on acceleration that got to the point it would happen when steadyly crusing, i found out disa had no resistence, changed, went for drive, on drive the only codes that came up had to do with the heating of 02 sensors. my thing is that the rpm issues got a lil better but is still there so im thinking it was cause by more than just one thing, i know the disa needed changing so fixing that is hopefully going to point me to the next possibility until i find the main cause, which i pray is not a software update lol, its either 02 or injectors or batt but since code came up for sensors i figured i would start on them.

seanjordan20

What are the O2 codes that your are getting. I can tell you this a software update is not going to fix the issue. My friend had that issue in his 525i and I'm trying to remember what part I replaced to fix it. He took his to BMW and all they did was a software update and it didn't fix it. They had it for a few more days and wanted to throw parts at it. He took it back and it took me a month to figure it out because it seemed to happen more when the a/c was on but it had nothing to do with it. When I find out what part it was I'll let you know (trying to go through all my purchases. I work on a lot of BMWs). I know it was fairly cheap to fix and took about 10 mins to do.

Jnelson1182

my issue just seems to happen more when the ac is on and i think its got to have something to do with the pully or maybe its not the actual ac but rather just the load thats being put on the engine when the ac is turned on that causes it to happen more often and actually a lil worst too well when it does happen now the disa and new e box fan have really helped it out so far. im thinking about either pulling injectors so i can at least clean them im sure it hasnt been done in 150k or 14-15 years lol, if i dont see anything there maybe battery? thats saying its not 02 sensor or anything else it could possibly be lol. the codes were something like 02 sensor heating before kat for both banks if im correct, i think for a second the behind kats popped to but once i cleared them only the front too came back, tho that was last night and 2 drives later they still have not shown lol which confuses me even more.

seanjordan20

Have you done the crank case vent kit on your car yet?

Jnelson1182

not not yet but it looks like the cold weather one has already been install tho thats just a guess because a few of the houses look to be insalated . i still have a slight rpm fluaction when crusiing and the acceleration feels real sluggish unless i press the gas pedal more than i feel i should need to. its kinda hard to explain the feeling i can just tell it still donesnt feel 100 percent right. today when starting car after not starting at all yesterday i got code 2783 heated film at air mass measuring sensor & 278c temp sensor intake air. both of which the car hasnt shown before and after cleaning earlier havent came back, do u think this could possible have something to do with the battery tripping out the sensors and the rpm being caused by batt making injector not spray right? the car is an 04 with 150k miles, im not to sure whars been done vs. what is original but im thinking to just replace everything i can as pm and also to try remedyying whatever this issue is

seanjordan20

The car may have already been equipped with the cold weather from factory. You can look that up by VIN.

How's your battery health. I can't completely say it is the issue unless or at least part of it unless you know that it needs to be changed. Your car is 1 year older than mine and i have more miles on my car but never had an O2 sensor or MAP sensor issue. All my issues have been back leaks and coils? I can't remember have you ran cleaner through the system yet?

I would say if the code comes back replace it. It very well could be your issue