Car keeps stalling and dying

[bgalex]

Ive been having this issue with the car stalling after idling, sometimes I cant even start the car because no commad from the start/stop button. After it shuts off and ACC is on the relays in the engine bay go crazy and ticking non stop - why?

I was able to get couple seconds of data log before i got 100 codes and stalled on me.

Do you guys see anything out of ordinary?
What could it be? If its stalling and why am I getting low voltage errors and 50 other codes?

https://bootmod3.net/log?id=66ecc6060bc37602820e32d3

[bgalex]

Any input here or help?

[KurtsM5]

What are you scanning with? What is the battery's health? When was the last time you replaced it? I'm guessing on the battery being tired.

[bgalex]

Ista
Brand new battery purchased 3 days ago from bmw

I have codes i can put here.

When car is off overnight resting, in the am when i open the door there is 0 codes, i can start the car with first try runs for about 10-15 seconds and then dies. Shoetly after codes appear.

Also if i unlock it and just put it on ACC on, there is 0 codes up until 1-2 minutes of just sitting ans then they start appearing.. its very weird

[KurtsM5]

Are they DME codes or a bunch of randoms?

[bgalex]

Bunch of random codes. When i unlock the car for the first 2 minues there is 0 codes and the scanner can read all systems including DMEs, after 2 minutes all codes appear and its unable to read the DMEs..

I sent a datalog of the car running for 15 seconds couple days ago to my tuner bootmod3 (i am currently with stock tune) and he said everything looks healthy and normal, it has to do something with vomrage thats causing the car to shut off afyer couple seconds..

[KurtsM5]

Maybe put a voltmeter on the underhood terminals to ensure you're getting the same voltage present on the battery terminals...

[bgalex]

I done that and i get 12.5 on the front of the car

Ive checked fuses with multimeter and they all are good, including the 2 dme fuses in the front passenger footwell fuses

Ive checked underneath car for the ground cable all good,

Im lost as to what else to check, like i said first 2 minutes car has 0 codes and starts first try, after 2 minutes of just being on ACC on it throws 100 fault codes

I cant even clear them because it loses connection to dme after 2 minutes

[M5 Hayden]

Originally Posted by bgalex

Ive been having this issue with the car stalling after idling, sometimes I cant even start the car because no commad from the start/stop button. After it shuts off and ACC is on the relays in the engine bay go crazy and ticking non stop - why?

I was able to get couple seconds of data log before i got 100 codes and stalled on me.

Do you guys see anything out of ordinary?
What could it be? If its stalling and why am I getting low voltage errors and 50 other codes?

https://bootmod3.net/log?id=66ecc6060bc37602820e32d3

What was the problem? Does it also die while driving?

[bgalex]

Originally Posted by M5 Hayden

What was the problem? Does it also die while driving?

It was my mistake.. i forgot to tighten one of the bolts to the block on the brace wheres the dms sit on there are 4 total, 1 was loose…. Very stupid mistake

[M5 Hayden]

Originally Posted by bgalex

It was my mistake.. i forgot to tighten one of the bolts to the block on the brace wheres the dms sit on there are 4 total, 1 was loose…. Very stupid mistake

Glad you solved it, I have very similar issues except for the ACC part (I never use it) as well as running rich, does it also shut off when your car was driving?

I’m guessing it’s HPFP for mine already ordered them but I’m also concerned about the DME connections

[bgalex]

Originally Posted by M5 Hayden

Glad you solved it, I have very similar issues except for the ACC part (I never use it) as well as running rich, does it also shut off when your car was driving?

I’m guessing it’s HPFP for mine already ordered them but I’m also concerned about the DME connections

No nothing like that with mine, i mean it shut off when driving when that bolt wasnt tightened but otherwise never issues like that.

It was throwing hundreths of codes as well because of the ground wasnt making a good connection between everything in the car.

Check all your ground bolts and nuts… start off there its the cheapest route and could be causing your intermittent issues.