|
|
Post by Barry on Jul 3, 2013 17:31:56 GMT -6
Two issues probably not related. 1) power brake assist not working first thing in the morning. 2) idle low, when coming off the expressway sometimes the engine will stall ( as the rpm drops quickly from 2500 to idle as this is a manual transmission car.)
|
|
|
|
Post by bmwfxr on Jul 4, 2013 17:53:57 GMT -6
What is the year of the car, which engine, how many miles? Any CEL or service lights on? Going to need a lot more information posted for any of us to be able to help you. Both issues should be setting some sort of dash light and if that is the case then there will faults stored. The fault definitions are really the only way anyone is going to be able to help without seeing the vehicle. Otherwise it is just going to be WAG(wild ass guesses).
Vacumme leaks, misfiring coil pack/s, bad spark plugs, sticking idle control valve if it has one, the later cars and engines don't, possible bad throttle body, bad Mass Air Flow, Cam sensors, DME are all possible issues or combinations of issues.
|
|
|
|
Post by Barry Seidner on Jul 10, 2013 15:38:24 GMT -6
good questions. The 540i sport is a year 2000 540 with a manual transmission with 115,000 miles. no CEL or lights on. plugs are about 15k old and the coils are all brand new.
I will have to pull codes and post them - but I only have a Peak reader - if that is good.
many thanks so far!
|
|
