OK, the latest in my C900's eccentricities. Possibly related to the stalling problem?
The short version is that it dies when there's too much electrical load. A few examples:
- Driving along at constant speed, esp at low revs, if I put two of the windows down / up the radio dies and the car stumbles / stutters
- Rolling slowly into my garage, I hit the brakes and the car often dies
- Without much electrical load it idles reasonably smoothly (for a 900). Turn the lights, fog lights, HRW on or put the roof up / down and it nearly dies. In fact often it does die when you operate the roof.
So far we've replaced most of the vac lines, cleaned the throttle body and replaced the idle control valve.
Ideas?