Audis running cold

[Lines Peter]

I think by putting a cover over the sensors to shield them from the wind,
you are treating the root of the problem, not a symptom.  I don't know what
model you drive, but Audi originally put a similar type of shrouding behind
the grill to direct air through the radiator, not onto the engine.
Unfortunately, it was commonly made of fibrous material (fancy cardboard)
and usually rots away after a few years...
I found that by duplicating the original shrouding, there are several
benefits.  1. Better flow through the radiator  2. Lack of false signals
from various temp senders  3. Cleaner engine (especially important when
changing spark plugs on an I-5 motor!)

Peter Lines