Totalfixation

I only have one key to use, i don't have a spare key to try. The engine will turn on but it will not start, meaning it will just keep revving but not start.

keep in mind that when i have the key in the ignition on the second on position, the throttle body starts to click flapping in and out.

AchtungE60

have you checked your battery? These cars use battery 100% of the time.

Totalfixation

I have a charger connected to the battery and it still has the same symptom.

turboawd

you may have a bad maf sensor. the maf sensor may not be detecting airflow, and is moving the throttle body to try and get an air reading. but you'd figure the engine would fire up at least somewhat.

try disconnecting the battery for a bit, and see if that changes anything.

AchtungE60

Doesn't mean the battery is shot. Maybe it lost its cranking amps. Turn on your radio and interior lights and see. If your charger is a large engine start then probably not the issue. If you have a little battery tender or a smaller charger that's not going to work. I don't know what to tell you. It's not a bad MAFS bcause you could unplug it and car will start fine. Do you hear clicking? If so that's your starter. Did you check your starter?

In your first post I assume you meant the DISA ...the electronically controlled flap (intake adjuster) for low end air? As long as it stays open your car will idle like shit but still start and run fine at RPMs above 1000 or so.

Totalfixation

Attach is the Throttle body. the butterfly flap keeps flapping on it's own when the key is on the 2nd position.

Anyone know how many throttle sensors are in the BMW 545i?

Stephen Max

All else being normal, the car should start even with a bad maf sensor. I know because I forgot to plug the maf sensor connector back after working on my car one day. Started up fine, but ran like crap, of course.

healthservices

to me it is more of a no start issue than anything else

Totalfixation

Could you explain what you mean a little more in detail?

in my earlier post i was stating revving, which i found the proper term to be cranking. The car would crank but it would not start. Also having the key in the ignition and turned on to acc. The Throttle body would flap it's butterfly blade on it's own.

I ordered some crankshaft sensor so I'm going to see if that could be the problem even though it didnt throw out any cps codes.

Totalfixation

here is a video i uploaded to give you an idea what's happening.