You're welcome.

If there is water puddling in the blower housing, the water drain(s) are probably plugged with leaves/debris of some kind.

I would check the fresh air inlet in front of the windshield, there should be water drains up there, and if plugged maybe the water came in from there.

I do not know if there was any modification of the blower housing on a W116 chassis, that was before my time.... well, not really...I just don't remember. Besides, I was out West back then and it never rains in California.....


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