5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
Ok guys, newbie here. Have a rough running car (starved for gas). 107k on the car, changed the plugs about 4 months ago, (big differance, everything back to good), this is the girlfriends car. Started hesitating and running rough, missing etc. more and more, over a couple weeks. Plugged in the code reader, and got P1503 code, (idle control valve stuck). So, took it off and cleaned it, and, got the same code, on the compute, with no improvement.. Then I unhooked the sensor lead from the MAF, and the car will run with a little help, and not stalling any more? but clearly still have a problem, ......... what's the problem, anyone know. ?
Last edited by mauigts; 07-05-2011 at 08:29 PM.
OK, took off the MAF, and cleaned it. Wasn't dirty, and didn't see anything wrong by appearance. Started the car, with the sensor wire disconnected, and it seemed to settle down, and idle,with and occasional rough spot, but as soon as I plugged in the sensor wire, ... engine dies. So, earlier threads, mention the MAF, and or the cam sensor? ,,, I am thinking that this MAF is bad. Does anyone know how to ohm it out, and see if you can check it that way?
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.