i have a favor to ask - BMW Forum

mrpuffin708 · 05-13-2010, 01:26 PM

can anyone find out what the resistance for the air flow meter when it is about halfway open and when it is fully open? i would really apprecite it. i am gonna try to trick my computer into thinking it is working. lol

brettski · 05-14-2010, 07:18 AM

What model are you talking about, it might be easier just to disconnect it if it's faulty.

theluis · 05-14-2010, 11:45 AM

yea i can get it for you but i need year,model

mrpuffin708 · 05-14-2010, 12:51 PM

sorry its a 90 525. i was on my phone and didnt think about it. the car just runs like crap below a bout 3500 rpm. im thinking its either this of the fuel filter. i smell a lot of fuel from the exhaust. any other suggestions? btw. this forum is awsome. i will be using it a lot due the fact the i went out and got a new bmw that needs a lot of work.

i am getting code 1215. would just disconnecting help my power loss. and would it throw the service engine light?

theluis · 05-15-2010, 03:44 PM

1215- the code indicates an open or short to ground at mass airflow sensor or wiring

you said it was running like crap well your car is running very rich at idle because of that sensor

good luck wiring is one of the most challenging tasks of the automotive industry especially on BMW's

mrpuffin708 · 05-15-2010, 09:31 PM

thank you. I am gonna try to rewire it in the morning. any tips for doin bmw electrical?

Kai · 05-15-2010, 09:50 PM

My only tip is to make sure you find some good diagrams and be careful. Best of luck.

mrpuffin708 · 05-16-2010, 12:02 PM

im not gonna cut any wires yet. just gonna run secondary wires to where they go. a lot of wire tracing but if it works it will be worth the time. i will let you guys know what i come up with. hopefully the family gives me the time i will nee too.

theluis · 05-17-2010, 07:41 PM

do you need a diagram on that sensor??
cus i can get you one

Numark318i · 05-17-2010, 10:23 PM

first try to unplug it first. It will run on default mode as far as I know. That way you will know for sure that is the issue.

if that fixes it temporarily then move on to fixing the wiring. Look for any frays or weird spots in the wire before you take larger things apart.

mrpuffin708 · 05-18-2010, 01:21 AM

theluis - yes... some good diagrams would help.

Numark --when i disconnect the sensor it gets almost undriveable, not just crappy. but with the code my computer is giving me i want to fix that first. then move on to other problems.

can anyone tell me what affect it would have if i just ran a new ground and 5 volt power to the sensor plug? would it have the same effect as if it were all working correctly? i checked the voltage to the plug at the big plug on passenger side and was only gettin 2.5 volts. and suggestions on how to fix the issue permanently?

mrpuffin708 · 05-21-2010, 10:49 PM

ok so i just ran a piggy back ground to my shock tower bolt and it got rid of the code. now i am gettin code 1444 which tells me it was a good idea. lol. anyone have any suggestions on where to permanently route the ground and whether or not i should keep it as a piggy back wire.