Subject: Some answers... Author: demetk as demet : member since January, 2005 : 976 posts Posted on: 2009-06-15 11:33:01

1. When I start the car, sometimes I get a loud grinding/ringing sound. Is my starter ready to go?

I had the same issue. Changed the starter with a rebuilt unit and it's fine now.

3. Erratic idle that sometimes fluctuates more when I turn on the lights or climate controls. Electrical problem/vacuum leak?

Check battery voltage at idle. It should be > 13.8 volts.
Also try disconnecting the o2 sensor. Does it idle better?

4. The 35-pin connector to my Motronic unit (the box above my glove compartment, I presume)

That is the ABS module. Your Motronic is behind the passenger side front speaker.

6. There are two modules under the steering wheel.

The one with the green wires should be the OBC relay box. It's used in conjunction with the OBC code function. A search will give you lots of hits.

demet
85 735i,88 528e,86 528e,89 535i turbo

• Trying to troubleshoot... - ssf1342 2009-06-13 21:32:39 (158 views)
  • Update - ssf1342 2009-11-21 20:08:20 (23 views)
  • Some answers... - demet 2009-06-15 11:33:01 (150 views)
    • Now I can't get the car to stay running... - ssf1342 2009-07-08 20:06:02 (75 views)
    • Re: Some answers... - clemsoncpa 2009-06-15 21:11:02 (133 views)
      • Thanks both... - ssf1342 2009-06-23 00:13:58 (111 views)
        • Re: Thanks both... - e23chris 2009-10-10 02:36:28 (33 views)