W123, Electrical

1985 300TD - Mysterious Intermittent Starting Problem

9 times out of 10 my car starts immediately no problem. 1 time out of 10 there is a click and then nothing. After several attempts I can get the car started and then everything is OK for a couple more days...

Here's the mystery. I had my shop check the solenoid (OK) and replace the ignition switch using the kit sold on this site. Everything was fine for a couple of days, then the same problem occurred. We can almost live with the problem but I'm concerned that one day we won't be able to start it at all.

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