Does anybody know how to clean an ICV valve. I'm getting an intermittent erratic idling (pulsating up and down). I've replaced the microswitch but no change. I've read some of the posts about dousing the ICV with carb cleaner. I would like to do that but don't know how to remove the ICV. It looks like it's got a 1" rubber band around the body. Is that part of the ICV or does it just hold it. Can I push the ICV out of it. Is that the best way to remove it.

Alternatively, can I just take the 2 hoses attached to it and then spray the carb cleaner inside without removing it. Any tips would be really appreciated. Thanks.

The condition you describe is what I would know as SURGING. There have been many posts here on that subject. I would go to the SEARCH facility and key in SURGING, then select TITLES ONLY.

Regarding the ICV. Some seem to think it causes stalling, but after reading what M.B.DOC had to say in the thread below, I would wonder if it's not the cause so much as the device that's responding to a lack of or incorrect sensor input.

EHA Current Measurement Results - Evaluation?

In other posts, you'll learn that getting one side of the ICV hose back on a 103 motor is a pain. I believe you have a 102 motor which is simply 2/3's of a 103 motor, so you might have the same experience. You could also do a SEARCH on ICV and learn a lot.

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'91 300-SEL