1987 BMW 528 poor idling

1987 BMW 528
135,000 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
LUCKYUS6
  • MEMBER
  • 2 POSTS
vehicle seems to want to stall out when stopped while in Drive (Park and Neutral seem ok, not great).
Nov 1, 2008 at 4:45 PM
Advertisement
Avatar
DOCHAGERTY
  • ✓ASE Certified Mechanic
  • 9,606 POSTS
  • ASE Certified Mechanic
The early Motronic engine management had a separate control module for the idle air control valve and if there is no adjustment available from the screw on top of the idle air control motor then it might need a new IAC module and valve.
Nov 1, 2008 at 10:43 PM
Avatar
LUCKYUS6
  • MEMBER
  • 2 POSTS
I replaced the ICV, unfortunately that was not the problem. The car idles ok whil in park and nuetral, but when I am at a stop light while in drive it stalls out. Plus, if it doesn't completely stall it has major hesitation when it is time to go. PLEASE HELP...
Nov 15, 2008 at 7:51 AM
Avatar
DOCHAGERTY
  • ✓ASE Certified Mechanic
  • 9,606 POSTS
  • ASE Certified Mechanic
Replacement of the idle control module might be needed as well as the idle control valve. Did you replace the idle control module and are you using new, known good parts? Idle quality is also dependent on the state of tune the engine is in. When was the last valve adjustment and spark plug replacement?
Nov 15, 2008 at 10:23 AM
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.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.