Clicking relay

Bernie Benz b.benz at
Sun Dec 3 13:31:53 EST 2006

You must not have access to the Bentley wiring diagrams, inasmuch as #3
relay in the main fuse box is the horn relay and #3 in the Aux panel is the
interior light delay control unit. The only relay in the CC system is the
compressor clutch relay. The fresh air fan delay is controlled by an engine
coolant temp. sensor input to the A/C control head.

Sorry, can¹t help much from your symptoms.

> From: "John Lagnese" <jlagnese at>
> Hi,
> I have been having an annoying problem with my 91 200 20V.  Since I've
> had the car, when my climate control is set on auto or defrost the
> system is fine. If I set it to bilevel or econ the #3 relay starts to
> click fairly rapidly. I believe this is the cooling fan delay relay. I
> tried a new relay and there was no change. Recently the relay slowly
> clicks even on auto or defrost now.
> Does anyone have any experience with this or any ideas?
> John

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