Rough idle NO Change in rpm
 

Hello all,

My daughters car is a 96 318ti . The idle is a little rough but the rpm is stable at 800-900. Should it be higher? Why the rough seeming idle with no fluctuating idle? I am new BMW but love the car as it has a cool California roof. Thanks ahead

start removing at air box, remove/inspect and clean, thru throttle body, then remove plenum and change out the pcv-ccv. use new gasket and vacuumn hoses. only use mass air flow cleaner when you do the maf sensor, and carb cleaner is ok for the AFN - IAC -tps. Replace the air filter too. Cleanliness is King. After you've put her all back together, Enjoy your run like new Toy! I Love taking things apart! use tooth brush & Q-tips Watch some DIY 's on utube. Bills86e

Thanks so much for the reply. I will start this weekend.


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Howdy! You may want to check the motor mounts as well. They do wear out on cars this old and can cause some drivetrain vibration. Good luck!