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Old 01-17-2003, 05:16 AM
pentoman pentoman is offline
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Join Date: Jan 2002
Location: England
Posts: 1,841
If you have an auto it's easy to test the switch (these steps apply to my '86 190E and a '91 230CE I have tested with, so I assume it's the case for all cars:

Drive at 30mph in '3', and shift from '3' to '2' with your foot off the accelerator. If it bangs down into 2nd gear with a jolt, your switch is working OK for zero throttle. If you do the same thing with even a tiny bit of throttle, it should slip quite a bit, letting you rev the engine fairly freely, and not instantly engage 2nd gear.

If you can get these 2 different behaviours, the switch is fine.
2.5-16v 1990 90,000m Astral Silver
2.0E 8v 1986 107,000m Black 2nd owner
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