Hi Richard and others, Again thanks for the reply and explanation of this difficult matter.
I did today a few test rides without fuse 9 installed. All worked normally, regarding lights and switches. So, for now, I will leave fuse 9 out as long as everything works well.
Yesterday I thoroughly inspected again the cable from the wheel speed sensor to the main chassis loom. Didn't see any damage or chaffing on it. During the first test ride today, the high idling was much more present than before (but still intermittent). So I gave that sensor cable an even more thorough third inspection by bending and repositioning the cable. Went for a ride again. Now the high idling did get worse. Still intermittent as before, but the idling is now around 3200 rpm!
This makes driving downhill almost impossible and dangerous, as you can't control your speed anymore. When going downhill, you feel directly when the high idling is present because it comes and goes out of the blue without any signs that could make it start or stop.
When I take the connector from the wheel speed sensor apart and go driving, idling works normally again! But by doing so, there is no speed indication, and the turn signals remain on after doing the turn.
Is it possible for you to explain to me how the wheel speed sensor works?
There is a WB 120 and a YR 119 wire which goes both to the engine loom connector. The YK 121 wire goes to the SP 5 wire bomb with Y100-K101-YW102. I searched for that SP5 bomb as it is taped in the big loom under the battery. Opened the taping and inspected the bomb, but all looked solid pressed to each other.
I already swapped the wheel speed sensor with the other car, but that didn't solve anything.
