1983 BMW 535i idling, rpm fluctuation, air intake

160,000 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
CHEETAH13
  • MEMBER
  • 2 POSTS
My BMW is a 533i, but that wasn't up there to check

So the key points are that when I start my car up, it idles really rough and even dies sometimes. Also, the rpm's fluctuate, which I know isn't supposed to happen.

The car performs very when once it gets going: no rpm fluctuation or shaking. It is only when it is idling that the car shakes and has a hard time.

I have thought, though not yet inspected, that the problem is in the air intake process or the fuel filter.

Please give me your take on my car's issues and problems and a way I can fix it. Thank you
Nov 3, 2010 at 9:03 AM
Avatar
DOCHAGERTY
  • ✓Experienced Mechanic
  • 9,606 POSTS
The M-30 is a good motor and it is sensitive to spark gap and throttle plate adjustment as well as the possibility the idle air control is a bit gummed up. Let me know what you found out after these checks are made.
Nov 4, 2010 at 3:01 AM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Frequently Asked Problems for This Vehicle